阅读下面的短文，请根据短文后的要求答题（请注意问题后的字数要求）［1］In a study likely to make school caretakers embarrassed

阅读下面的短文，请根据短文后的要求答题（请注意问题后的字数要求）
［1］In a study likely to make school caretakers embarrassed, U.S. researchers said that chewing gum may help improve performances of teenagers. Many schools ban chewing gum because children often throw away the sticky chaw under chairs or tables. But the study found that students who chewed gum during math class had higher scores on a math test and better grades than students who did not chew gum in the class.
［2］“For the first time, we’ve been able to show in a real-life kind of situation that students did perform better when they were allowed to chew,”said Gil Leveille, director of the Wrigley Science Institute. Wrigley has gotten feedback from many of its gum customers who say chewing gum helps them stay focused.
［3］The researchers studied four math classes（108 students aged 13 to 16）.About one half got free Wrigley’s sugar-free gum to chew during class, homework and tests. They chewed at least one stick of gum 86 percent of the time they were in math class and 36 percent of the time they were doing homework. The other half .
［4］After 14 weeks, the gum chewers had a 3 percent increase in their math scores on the Texas Assessment of Knowledge and Skills achievement test, a small but significant change. As a matter of fact, the gum chewers did get better final grades in the class than their non-chewing peers.
［5］Leveille said chewing gum helps reduce stress, so students can do their best work. And while he is aware that many schools have a dim view on students’ chewing gum in class, he hopes the findings may change that a bit.
［6］“It’s not a matter of chewing. It’s a matter of gum disposal（处理），”Leveille said, adding that it can be overcome by teaching proper disposal methods. If that failed, he joked, “We’ll have to provide the cleaners with scrapers（刮刀）”
【小题1】What is the main idea of the passage？（no more than 10 words）
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【小题2】In what way is chewing gum helpful according to the passage?（no more than 10 words）
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【小题3】Fill in the blank in Paragraph 3 with proper words.（no more than 8 words）
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【小题4】Which sentence in the passage is the closest in meaning to the following one?
Although he knows many schools are against students’ chewing gum, he expects that the research results will help improve the situation.
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【小题5】According to Leveille, why should schools deal with the problem in gum chewing?（no more than 10 words）
_ Chewing gum can raise grades of teenagers. /Chewing gum may help improve performances of teenagers.

(答案→)Chewing gum can raise grades of teenagers. /Chewing gum may help improve performances of teenagers. 解析：文章介绍虽然很多学校禁止学生吃口香糖，但是研究表明吃口香糖可以让学生减轻压力，集中注意力，学校应该处理口香糖，不是禁止口香糖。【小题1】主旨题：从文章的第一句话：In a study likely to make school caretakers embarrassed, U.S. researchers said that chewing gum may help improve performances of teenagers. 可知口香糖可以帮助改善年轻人的表现。答案是：Chewing gum can raise grades of teenagers. /Chewing gum may help improve performances of teenagers.【小题2】细节题：从第四段的句子：Wrigley has gotten feedback from many of its gum customers who say chewing gum helps them stay focused.可知咀嚼口香糖可以使年轻人减轻压力，更专心。It can reduce stress and help stay focused.【小题3】填词题：从前面的About one half got free Wrigley’s sugar-free gum to chew during class, 可知有一半的学生上课吃口香糖，另一半不吃：didn’t chew any gum during their study/went without 【小题4】这句话的意思是：虽然他知道很多学校反对学生吃口香糖，但是他希望这个研究结果可以改善这个情况；和And while he is aware that many schools have a dim view on students’ chewing gum in class, he hopes the findings may change that a bit. 意思相近。【小题5】细节题：从第一段的句子：Many schools ban chewing gum because children often throw away the sticky chaw under chairs or tables.可知学校处理口香糖的问题，因为学生喜欢乱扔口香糖：Because some students throw away the sticky chaw everywhere./To overcome the problem of throwing away the sticky chaw everywhere.

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