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题型:选词填空-短文选词填空 难度:0.65 引用次数:90 题号:19282541
Directions: Complete the following passages by using the words in the box. Each word can only be used once. Note that there is one word more than you need.
A. struggling            B.suit               C. produce            D. extension       E. treat
F. performance     G. suggests     H. recover          I. force            J. reset       K. flowing

Walking through any high school during the first class in the morning, you may find that many students are     1     to keep their heads up. “They’re sitting in the classroom, but their heads are at home on their pillows,” says Mary Carskadon of Brown Medical School in the US.

Don’t blame yourself; blame the clock in your brain. Two decades of research     2     that your bodies are pushing you to stay up at night and sleep into the morning. During the first several weeks of school, students are more likely to get a(n) lack of sleep. In the holidays, most students can sleep over eight hours a night. But during the school day, students on average sleep only about six hours. Students will lose 10 hours of sleep per week that they never     3     from. The lack of sleep may not only be a drag (拖后) on school     4    , but also be related to poor health.

Scientists in the US led research to try to     5     teenagers’ clocks back to help them fall asleep earlier. They use a special light in the classroom to try to     6     a reset of the students’ biological clock. They found the brain can     7     a chemical that helps sleep. It comes out only in the dark. The research failed at the end. Doctor said that even if the chemical had started     8    , the kids’ homework and other activities meant they stayed up at night.

Some schools have reset their school time from 7:25 to 8:30 a.m. to     9     the students. The results were so encouraging that students who had the hour     10    of sleep performed best in tests. Those who lost the hour did worst of all.

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【推荐1】选词填空
A. positive B. emphasis C. advocate D. healthy E. unhealthy F. opposed G. negative

On the other hand, there are some students who are     1     to using cellphones at school. First, so addicted to cellphones are many students that they spend too much time on it, having a     2     influence on their study. Second, with many     3     websites on the Internet, they will suffer a lot physically and mentally.

Personally, I     4     that all the students (should) put     5     on study and shouldn’t use phones unless necessary.

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A.concentrate   B.unique   C.explore   D. confident   E.impression   F.leave

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【推荐3】阅读下面短文,根据上下文内容从所给的A到G的选项中,选出可以填入空白处的最佳选项,每个词只可选用一次。
A. get on               B. drop out of                    C. was tired of       D. get passionate about
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