题目内容

17.The little boyis eating(eat)a big apple now.

分析 小男孩现在正在吃一个大苹果.

解答 答案:is eating 考查单词填空.根据句中now,要用现在进行时态,因主语The little boy是单数,且动词用is.

点评 考查单词填空,准确地理解题意、然后根据题意及提示确定所填单词词形,正确写出单词完成答题.

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8.One in ten teens says they use"study drugs"to improve their performance in school.So-called"study-drugs"refer to prescription medicines(处方药) used to treat ADHD(注意力缺乏症).But most of parents have no understanding of the problem,a new study finds.
In January,2013,researchers from the University of Michigan Mott Children's Hospital did a national survey of more than seven hundred families with teens.They found that only one percent of parents believe their child has taken a study drug.
Yet in a 2012 University of Michigan study,ten percent of second-year high school students and twelve percent of third-year students say they use a study drug.
The misuse of stuffy drugs didn't come to the attention of almost all parents."What we found in this survey is a clear mismatch(不相符),"said Dr.Matthew Davis,one of the researchers."It is a mismatch between what parents believe and what their children were reporting."
"We know teens believe that these drugs can improve their grade,"Davis said."But these prescription medicines are drugs.And teens who use them without a prescription are taking a serious risk."
The new survey showed that fifty-four percent of white parents were"very concerned"about their child taking study drugs,compared with thirty-eight percent of the Hispanic (拉美的) parents and thirty-seven percent of black parents.
However,just twenty-seven percent of parents surveyed talked to their teens about using study drugs.Of these parents,forty-one percent were black,twenty-seven percent were white and seventeen percent were Hispanic.
Students with a prescription for an ADHD drug should be required to keep their medicines in a safe place.Seventy-nine percent of parents think so,the survey shows.This may help preventitfrom being shared or used by other students.
32.According to paragraph 4,Dr.Davis thinks.D
A.the 2012 University of Michigan st udy is untrue
B.it is a good way to take study drugs to treat ADHD
C.it is necessary to do another new survey about study drugs
D.some parents still don't realize the study drug problem
33.Dr.Davis believed using study drugs to improve grades.A
A.is bad for health    B.is worth a try   C.sometimes works   D.causes little harm
34.What does the underlined word"it"in the last paragraph refer to?A
A.The study drug     B.ADHD.C.The survey.D.A safe place..
35.What is the purpose of this text?C
A.To give useful advice.
B.To introduce a new drug.
C.To report a research result.
D.To explain what ADHD is.
5.Conventional wisdom is a major barrier to innovation(创新)that threatens the survival of companies everywhere.It's based on the assumption that old ideas will always work,so they shouldn't be challenged.While this may be a valid assumption in situations that don't change,it's unlikely to hold true in a changing situation.In today's rapid changing global environment,old methods often don't work,and stubbornly using them can lead to major problems.
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Researchers from the University of Iowa based their findings on a review of 18earlier studies that looked at the association between sunscreen use and melanoma.They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
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