If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（1）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（2）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（3）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（4）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（5）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（6）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（7）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（8）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（9）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（10）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（11）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（12）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（13）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（14）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（15）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（16）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（17）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（18）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（19）题选______。

If you’re like many people, you may have decided that you want to spend less time 1______at your phone. It’s a good idea: an increasing body of 2______suggests that the time we spend on our smartphones is 3______with our sleep, self-esteem, relationships, memory,attention spans, creativity, productivity and problem-solving and decision-making 4______. 5______there is another reason for us to rethink our 6______with our devices. By chronically raising levels of cortisol, the body’s main stress hormone, our phones may be 7______our health and shortening our lives. Until now, most discussions of phones’ biochemical effects have focused on dopamine,a brain chemical that helps us 8______habits—and addictions. Like slot machines,smartphones and apps are explicitly designed to 9______dopamine’s release, with the 10______of making our devices difficult to put down. This manipulation of our dopamine systems is 11______many experts believe that we are developing behavioral 12______to our phones. But our phones’ effects on cortisol are potentially even more 13______. Cortisol is our primary fight-or-flight hormone. Its release triggers 14______changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and 15______acute physical threats. These effects can be life-saving if you are actually in physical 16______—like, say,you’re being charged by a bull. But our bodies also release cortisol in response to emotional stressors an increased heart rate isn’t going to do much good, such as checking your phone to find an angry email from your boss. The good news is that if we break this anxiety-driven cycle, we can 17______our cortisol levels, which in turn may both 18______our short-term judgment and lower our 19______for long-term stress-related health problems. To make your phone less stressful, start by turning 20______all notifications except for the ones you actually want to receive. 第（20）题选______。