21秋中传媒《大学英语(预备一)》平时作业答案

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小伟参加英语考试，共50道题，满分为100分，得60分算及格。试卷评分标准为做对一道加2分，做错一道倒扣2分，结果小伟做完了全部试题但没及格。他发现，如果他少做错两道题就刚好及格了。问小伟做对了几道题？（）

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

21秋中传媒大学英语(预备一)平时作业试卷总分:100 得分:100一、单选题 (共 25 道试题,共 100 分)1.There's a(n) _ on the blackboard saying that there will be a meeting this afternoon.A.practicalB.cowC.noticeD.imagine答案:C2.Business has _ achieved a market (市场) for children, because every child have learned from TV what a child should have and be like.A.firmlyB.avoidC.lieD.ceiling答案:A3.Deaths were _ less in Los Angeles because the accident happened at 4:31 a.m. on a holiday, when traffic(交通) was not busy.A.relativelyB.airplaneC.fenceD.annual答案:A4.The biggest problem is the _ of the research, which nobody knows but would be huge.A.personalB.experienceC.costD.similar答案:C5.Wed better go and tell her the _ news. Im sure she will be very _ it.A.surprised; surprising inB.interested; interesting inC.interesting; interested atD.surprising; surprised at答案:D6.When a _ tool (工具) has been developed, it is usually because nothing else will do the job as well.A.respectB.specialC.professorD.partly答案:B7.Before his_Alfred Nobel decided to set up a prize with his money to honor the people who did great things in science.A.deathB.happyC.bornD.health答案:A8.Can you hear someone _ in the next room?A.singB.singsC.singingD.sang答案:C9.The old man was remembered by people because he had _ many useful things during his life.A.prizedB.knowC.finishD.invented答案:D10.How many _ do you plan to take this year?A.tireB.coursesC.mindD.tin答案:B11.Do you know the lady _ is interviewing our headmaster?A.whichB.whoC.whomD.whose答案:B12.Many people with AIDS (艾滋病) have to _ months in hospital up to a time when they have someone at home to help and look after them.A.thinkB.believeC.spendD.smoke答案:C13.To my _ many of my classmates came over to share my problems.A.greetB.noticeC.delightD.pride答案:C14.We wrote down the direction (方向) of travel and sent the _ back to baseA.informationB.informC.formulaD.informal答案:A15.Theres a lot of _ outside when he is trying to sleep.A.noiseB.noisesC.noisyD.noisily答案:A16.I was once _ to read a piece of writing with far too many spelling mistakes.A.mixtureB.straightC.shockedD.cheek答案:C17.If you _ his idea, you would surely be killing him.A.awardB.destroyedC.inventedD.cross答案:B18.Would you like to come to dinner this Sunday, Mr Wang?_.A.I’d love to, but I have lots of things to do.B.Oh no. That’ll be too tired.C.I’ll stay at home.D.Yes, please.答案:A19.He often _ from the Internet for us.A.get informationB.gets informationC.get informationsD.gets informations答案:B20._- May I put my bike here? - No, you _.A.may notB.can’tC.might notD.mayn’t答案:B21.We bought the house _ because it was convenient for the children to go to schoolA.leaderB.friendlyC.simplyD.share答案:C22.When would you _ this meeting to take place?A.artistB.sillyC.preferD.beautiful答案:C23.I have seen the movie _ times.A.the number ofB.a number ofC.muchD.a number答案:B24.Once we have a(n) _ in head, we have to reach it without minding everything else.A.affordB.obj

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

A. 32
B. 34
C. 36
D. 38

答案：D

解析：

简单方程问题。假设小伟做对了x道题，则做错的题目为50-x，根据题意有：2 (x+2)-2(48-x) = 60，解得x= 38，正确答案为D。

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