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.
【C9】
选项 A、trigger
B、lower
C、maintain
D、cease
答案 A
解析 空格处需要填入一个动词，须满足句意“就像老虎机一样，智能手机和应用程序明显是为了________多巴胺的释放而设计的”。根据前一句句意可知，多巴胺是一种帮助我们养成习惯并使我们上瘾的大脑化学物质，因此对老虎机等上瘾的习惯肯定会使更多的多巴胺被释放。综合四个选项，只有选项[A] trigger“触发；引发”符合句意，故为正确选项。
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考研英语一

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