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    Born in England in 1944, Ian Wilmut 1.(know)as the leader of the research group that first cloned a female lamb 2.(call)Dolly in 1996. Dolly became famous and pictures of her appeared on the 3.(cover)of magazines all over the world. The 4.(possible)of reproduction without a male and female being involved also made her the focus of a moral debate. For scientists, however, the cloning of dolly using the DNA of an adult cell was a breakthrough 5.showed the cloning of special animals was possible.

    However, 6.Wilmut thinks unlikely is human cloning. He says 7.(undertake)the procedure with humans would require 29 surrogate(替代的)mothers and 300 eggs. Of those 29,28 would be bound 8.(experience)failure and suffer physically and emotionally. He says he is also concerned about the psychological and 9.(society)consequences a cloned might have to go through. For these reasons, he is not 10.favor of it.

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