题目

阅读理解 We've all done it. For many of us, it's something that happens so naturally every day. After working on an important project or a task for a little while, you decide to take a break-only to pick up your smartphone and start looking through social media, reading emails, checking out the news and maybe getting in a quick round of "Candy Crush Saga". A break is supposed to be a time to relax so that you can go back to your work feeling fresh. However, a new study finds that cellphone use during a mental break doesn't really allow the brain to relax and can actually result in a poorer performance. For the study, a group of 422 undergraduate students at Rutgers were assigned a set of 20 word puzzles to complete. Halfway through the task, the students were separated into three groups: one group took a break and were told to use their cellphones to go shopping online, another group took a break and were instructed to shop either via their computers or using a paper circular (印刷品广告), and the third group didn't take a break at all. Interestingly, the group that took a break with their cellphones displayed the highest levels of mental fatigue (疲劳), and had the hardest time solving the word puzzles following their breaks. In all, the cellphone group took 19% longer to finish the puzzle task, and solved 22% fewer problems than participants in the other two groups combined. "The act of reaching for your phone between tasks, or the mid-task, is becoming more common. We assume it's no different from any other break-but the phone may carry increasing levels of distraction (使人分心的事) that make it difficult to return focused attention to work tasks," explains Terri Kurtzberg. （1） Why do people turn to smart phone after a big task? A . To get relaxed. B . To keep informed. C . To achieve help. D . To make a phone call. （2） How was the study conducted? A . By asking questions. B . By interviewing lots of people. C . By studying different lifestyles. D . By studying different ways of breaks. （3） What does the study suggest? A . Breaks are unnecessary. B . Students are addicted to smart phones. C . Smart phones distract people's attention. D . Paper circulars improve work efficiency. （4） What might be the purpose of the author? A . To share a story. B . To present a finding. C . To solve a problem. D . To prove a theory. 答案： A D C B

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