课时作业(一) Unit 1 Great scientist
Section Ⅰ Warming Up & Reading Prereading
Ⅰ.阅读理解
A
Sir John Gurdon，a British scientist，who won the Nobel Prize in Physiology or Medicine in 2012，said he had predicted at the time of his frog experiments that the successful cloning of a mammal would happen within 50 years，and that "maybe the same answer is appropriate" for the step to human cloning.Parents who lose children in accidents may be able to clone "copies" to replace them then.
Although any attempt to clone an entire human would raise complex moral issues，the biologist claimed people would soon overcome their concerns if the technique became medically useful.Cloning was regarded with extreme doubts when it was first developed but became widely accepted after the birth of Louise Brown，the first "testtube baby"．He said，"When my first frog experiments were done，an American reporter asked how long it would be before these things could be done in mammals or humans.I said，'Well，it could be anytime between 10 years and 100 years-how about 50 years？' It turned out that it wasn't far off the mark as far as Dolly was concerned.Maybe the same answer is appropriate." Sir John added that cloning a human being effectively means making an identical twin，and doctors would therefore simply be "copying what nature has already produced"．
The average vote on allowing parents of deceased children，who are no longer fertile (能生育的)，to create another by using the mother's eggs and skin cells from the first child，thinking the technique was safe and effective，is 60 percent in favor.The reasons for "no" are usually that the new children would feel they are some sort of replacements for something.
语篇解读 诺贝尔生理学或医学奖得主、英国科学家约翰·格登爵士称，那些在事故中失去子女的父母将能在未来50年内借助克隆技术，让他们的子女得到"重生"。
1．Sir John predicted the human cloning would be a reality in __________ at most.
A．about 100 years B．about 60 years
C．about 50 years D．about 10 years
解析： 细节理解题。根据文章第一段可知，格登爵士表示，在未来50年内，那些在事故中失去孩子的父母将有可能通过克隆技术得到孩子的"复制品"。故选C项。
答案： C
2．According to the text，which statement is NOT true?
A．Louise Brown is the first "testtube baby"．
B．Human cloning is still a controversial topic.