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[单项选择]Cloning(克隆)：Future Perfect
1 A clone is all exact copy of a plant or animal produced from any one cell. Since Scottish scientists reported that they had managed to clone a sheep named Dolly in 1997，research into cloning has grown rapidly．In May 1998，scientists in Massachusetts managed to create two identical calves(牛犊)using cloning technology．A mouse has also been cloned successfully， But the debate over cloning humans really started when Chicago physicist Richard Seed made a surprising announcement：“We will have managed to clone a human being within the next two years，”he told the world．
2 Seed’S announcement provoked a lot of media attention，most of it negative．In Europe， nineteen nations have already signed an agreement banning human cloning and in the US the President announced：”We will be introducing a law to ban all human cloning and many states in the US will have passed anti-cloning laws by the end of the year．’’
3 Many researchers are not so negative about cloning，They
[单项选择]Cloning(克隆)：Future Perfect
1 A clone is an exact copy of a plant or animal produced from any one cell Since Scottish scientists reported that they had managed to clone a sheep named Dolly in 1997 research into cloning has grown rapidly．In May 1998，scientists in Massachusetts managed to create WTO identical calves(牛犊)using cloning technology A mouse has also been cloned successfully But the debate over cloning humans really started when Chicago physicist Richard Seed made a surprising announcement：“We will have managed to clone a human being within the next two
years，”he told the world．
2 Seed’s announcement provoked a lot of media attention，most of it negative．In Europe，nineteen nations have already signed an agreement banning human cloning and in the US the President announced：“We will be introducing a law to ban au human cloning and many states in the US will have passed anti—cloning laws by the end of the year”
3 Many researchers are not so negative about cloning They are wor
[单项选择]生命科学中“克隆”(CLONE)一词的含义是( )。
A. 生物个体的再生
B. 生物个体的无性繁殖
C. 繁殖出的生物个体没有性别
D. 生物个体的细胞移植
[填空题]活用所给动词完成句子。
All freshmen ______ take an English exam. (require)
[单项选择]Future education needs to produce graduates of all the following categories EXCEPT（）
A. those who can adapt to different professions.
B. those who have a high flexibility of mind.
C. those who are thinkers, historians and philosophers.
D. those who possess only highly specialized skills.
[单项选择]All that we really need to plot out the future of our universe are a few good measurements. This does not mean that we can sit down today and outline the future course of the universe with anything like certainty. There are still too many things we do not know about the way the universe is put together. But we do know exactly what information we need to fill in our knowledge, and we have a pretty good idea of how to go about getting it.
Perhaps the best way to think of our present situation is to imagine a train coming into a switchyard. All of the switches are set before the train arrives, so that its path is completely determined. Some switches we can see, others we cannot. There is no ambiguity if we can see the setting of a switch: we can say with confidence that some possible futures will not materialize and others will. At the unseen switches, however, there is no such certainty. We know the train will take one of the tracks leading out, but we have no idea which one. The un
A. Train engineers.
B. General audiences.
C. Professors of statistics.
D. Young children.
