Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep. Therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the government must take care to control gene technology.

　　What does “these two killers” in the second paragraph refer to?

　　Gene technology and another treatment of the two diseases.

　　The two murderers who killed the cloned baby.

　　The two diseases of cancer and heart disease.

　　Hereditary diseases and cancer

　　What's the main idea of the third paragraph?

　　How gene technology can be applied in the field of treating hereditary diseases.

　　Gene technology can be used to clone human babies.

　　Gene technology can help people to give birth to a baby.

　　Gene technology can help the English imperial family out

　　In what way gene technology can help to treat hereditary diseases?

　　Using gene technology, people with hereditary diseases can have more living days.

　　Using gene technology, the scientist finds the wrong gene and corrects it.

　　Using gene technology, human babies can be cloned.

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