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Have you ever imagined that you could be cloned like Dolly the sheep in the not too distant future?
The news that a human embryo (胚胎) has been 1 cloned for the first time has caused mixed reactions (反映).
The 2 was carried out by scientists from the Advanced Cell Technology Inc (ACT), in Massachusetts, US. The group 3 the news on November 25.
“This is 4 human being. A clone is alive, it walks, it breathes,” said Jamie Grifo, 5 on the study of cloning at New York University School of Medicine.
“This is a set of cells in a lab that will be used to 6 someone's life. ”
Such research could lead to treatment for 7 such as heart diseases, AIDS and even cancer, 8 scientists.
Despite high hopes from other scientists, the news raised concerns immediately from religious and political leaders. Several 9 in the US do not allow human cloning. President George W. Bush also made it clear that he is 10 any type of human cloning. However, the scientists at ACT said they have no interest at present in 11 an early embryo into __12__.
Animals have been cloned repeatedly since Dolly the sheep 13 in 1997. And there were no real technical 14 to stand in the way of scientists making a cloned human embryo.
This time the research group used traditional cloning technology with a human 15
16 it was given DNA from an adult cell, the egg began to __17__.__18__ it was stopped from becoming a baby--at a stage in which it was 19 a ball of cells. The 20 technology has been used to clone sheep, cattle and monkeys.
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A. according to
B. including
C. besides
D. argued
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A. developing
B. building
C. inventing
D. discovering
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科目:高中英语 来源:英语教研室 题型:054
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If you do not use your arms or your legs for some time, they become weak. When you ___1___ using them again, they ___2___ become strong again. Everybody knows this and nobody would think of ____3___ this fact ___4___ there are many people who do not ___5____ to know that memory works in the ___6___ way.
____7___ someone says that he has a good memory, he ____8___ means that he ____9___ his memory by practicing exercising it. When someone ___10____ says that his memory is poor, he actually means that he ____11____ give it enough chances to become ____12___. Have you ever ____13____ that people who cannot read or write usually have ____14___ memories than those who can? This is ____15___ those who ____16___ read or write ____17___ remember things. They have to remember dates, places, names, songs and stories. So their memory is the whole time ___18___. So ___19___ you want to have a good memory, you should learn from those people, and ____20____ by remembering what you see, hear, feel and write. If so, you must have a good memory.
(1) A.begin |
B.go on |
C.stop |
D.continue |
(2) A.quickly |
B.slowly |
C.soon |
D.at once |
(3) A.doing |
B.agreeing |
C.questioning |
D.answering |
(4) A.Yet |
B.Still |
C.So |
D.Certainly |
(5) A.want |
B.seem |
C.get |
D.hope |
(6) A.other |
B.usual |
C.same |
D.opposite |
(7) A.As |
B.What |
C.While |
D.When |
(8) A.real |
B.actually |
C.true |
D.then |
(9) A.wants |
B.Builds up |
C.makes |
D.keeps |
(10) A.again |
B.else |
C.more |
D.once |
(11) A.do not |
B.is not |
C.never |
D.does not |
(12) A.poor |
B.weak |
C.strong |
D.healthy |
(13) A.seen |
B.heard of |
C.noticed |
D.thought of |
(14) A.worse |
B.better |
C.more |
D.less |
(15) A.why |
B.how |
C.because |
D.the reason |
(16) A.used to |
B.cannot |
C.try to |
D.have to |
(17) A.will not |
B.have to |
C.refuse |
D.cannot |
(18) A.ready |
B.being used |
C.busy |
D.training |
(19) A.if |
B.that |
C.though |
D.thus |
(20) A.please |
B.try |
C.train |
D.enjoy |
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科目:高中英语 来源:101网校同步练习 高三英语 人民教育出版社(新课标A 2002-3年初审) 人教版 题型:054
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