2．它能治疗难以治愈的疾病。

　　It can be used to the cure of some serious diseases.

　　3．原因是，如果这种技术的使用失去控制，会出现很多问题。

　　The reason is that if the use of this technology gets out of control, many problems may arise.

　　4．他们担心的是我们或许会制造出替代我们的超人。

　　What they worry is that we may produce a superhuman race that could replace us.

　　5．依我看来，既然大家普遍认为克隆是一次科学的重大突破，......

　　In my opinion, since it is generally agreed that cloning is a wonderful scientific breakthrough，...

　　6．我们只有用这种方式才能使之为人类造福。

　　We can only make it beneficial to mankind in this way．

　　(二)句式升级

　　7．用which引导的定语从句合并1句和2句

　　Some people believe cloning can bring many benefits to human beings, which can be used to the cure of some serious diseases.

　　8．用only开头的倒装句改写6句

　　Only in this way can we make it beneficial to mankind.

　　【参考范文】

　　On Human Cloning

　　Cloning is producing an exact copy of a plant or an animal using its cells.However, human cloning has caused much debate.

Some people believe cloning can bring many benefits to human beings, which can be used to the cure of some serious diseases.Besides, it can be used to bring the extinct