Sugar______naturally in fruit, so eating fruit can add to the contents of sugar inside our body.


  1. A.
    happens
  2. B.
    occurs
  3. C.
    appears
  4. D.
    forms
B
 occur此處意思為“存在于；出現(xiàn)在”，句意：水果天然含糖分,因此多吃水果能夠增加體內(nèi)糖分的含量。
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［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.

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［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_____________.

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［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（處理），”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）”

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