2. 考研
  3. If you’re like many people, you may have decided that you want to spend less time【C1】________at your phone. It’s a good idea: an

If you’re like many people, you may have decided that you want to spend less time【C1】________at your phone. It’s a good idea: an

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问题     If you’re like many people, you may have decided that you want to spend less time【C1】________at your phone. It’s a good idea: an increasing body of【C2】________suggests that the time we spend on our smartphones is【C3】________with our sleep, self-esteem, relationships, memory, attention spans, creativity, productivity and problem-solving and decision-making【C4】________  .
    【C5】________there is another reason for us to rethink our 【C6】________ with our devices. By chronically raising levels of Cortisol, the body’s main stress hormone, our phones may be【C7】________ our health and shortening our lives.
    Until now, most discussions of phones’ biochemical effects have focused on dopamine, a brain chemical that helps us【C8】________ habits—and addictions. Like slot machines, smartphones and apps are explicitly designed to【C9】________dopamine’s release, with the【C10】________of making our devices difficult to put down. This manipulation of our dopamine systems is【C11】________many experts believe that we are developing behavioral【C12】________to our phones. But our phones’ effects on Cortisol are potentially even more【C13】________ .
    Cortisol is our primary fight-or-flight hormone. Its release triggers【C14】________ changes, such as spikes in blood pressure, heart rate and blood sugar, that help us react to and【C15】________ acute physical threats. These effects can be life-saving if you are actually in physical【C16】________—like, say, you’re being charged by a bull. But our bodies also release Cortisol in response to emotional stressors where 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【C17】________our Cortisol levels, which in turn may both【C18】________our short-term judgment and lower our【C19】________for long-term stress-related health problems. To make your phone less stressful, start by turning 【C20】________ all notifications except for the ones you actually want to receive.
【C11】
选项 A、when
B、why
C、where
D、whether
答案 B
解析 空格处需要填入一个连词。本句句意为“这种对我们多巴胺系统的操纵，正是________许多专家认为……”，由此可知本句是对前面多巴胺对人体健康的影响的总结，空格后是专家们的观点。换言之，本句前是支持专家们观点的论据，也就是原因。根据逻辑关系，可知此处空格所填的连词引导原因。综合四个选项，只有选项[B]why“为什么”符合逻辑，故为正确选项。此处why引导表语从句。
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考研英语一

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