This work at once. [ ] A．must be doneB．must do C．must is doneD．can do 题目和参考答案——青夏教育精英家教网—

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This work ________ at once.

[　　]

A．must be done

B．must do

C．must is done

D．can do

答案：A

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科目：初中英语 来源：2013届浙江省杭州市运河镇亭趾实验学校九年级上学期期末模拟考试英语试卷（带解析） 题型：阅读理解

On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could read the whole “map” of the human body: DNA. DNA is something that everybody has, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own.
People have been trying to understand the human body for a long time. In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family. It is because of small things named “genes” in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language.
In 1961, Marshall Nirenberg and Johann Matthaci found a message in DNA showing how DNA tells the cell（细胞）to build its parts. Scientists have now found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save more people from several illnesses.
Most people hope that this will help make better medicine and help sick people. Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs. Man would have to meet a lot of trouble if DNA technic wasn’t limited（限制）in use.
【小题1】When did we first know why we look like other people m our family?

A．In 1860

B．In 1953

C．In 1961

D．In 2000

【小题2】What does the underlined word “ genes” mean?
A. The “map” of DNA.                B. A special language.
C. Small parts of DNA.                D. DNA
【小题3】What did the two scientists first discover in 1961 ?
A. The “map” of DNA.               B. A new illness.
C. The language of DNA.              D. A message of DNA.
【小题4】What can we do if we understand some “ words” of the language inside the body

A．Make people get new jobs.

B．Make medicine for illnesses.

C．Make maps of human.

D．Make people less attractive.

【小题5】What do people think about this work’?

A．It can cause good or bad results.

B．It can cause only good results.

C．It can cause good results but won’t work.

D．It can cause only bad results.

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科目：初中英语 来源：2012届江苏省海门市正余初级中学初三中考适应性考试英语试卷（带解析） 题型：选词填空

C. 请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。

【小题1】Don’t be late again, Tom. Otherwise I ________ you.
【小题2】—What do you think of my suggestion?
—Sorry. What’s that? I _______ to my favourite song.
【小题3】Lucy ________ to school on her own when she was in the middle school.
【小题4】I feel energetic again because I _________ a rest. I can devote myself to this work now.
【小题5】We are told that sound __________ through air at a speed of about 340 metres per second.