尽管克隆人类胚胎在很多国家还不合法，但一些科学家正在加紧研究，以制造出克隆的人类婴儿。

重点词汇

On the one hand，some scientists point out that...On the other hand，many people，including some scientists，disagree and are afraid that...

一方面，一些科学家指出......另一方面，包括一些科学家在内的许多人持不同意见，他们担心......

(on the one hand...，on the other hand...一方面......，另一方面......

※on the one hand...on the other hand...通常用于引出不同的甚至是对立的观点或理由，有时on the other hand 可单独使用。

※at hand在手边，在附近

by hand用手，手工的

hand in hand手拉手；联合；密切关联

(1)On the one hand，we have to develop the economy，but on the other hand，we should be concerned about the environment.一方面，我们得发展经济，但另一方面，我们应该关心环境。

(2)There is no need to worry，for help is at hand.

没必要担心，因为援助近在咫尺。

(3)Music and human emotions go hand in hand.

音乐和人的情感是密切相关的。

[单句改错]

(4)The man moved the huge stone by his hand.

...，if mankind toys with nature in this way， we may be on our way to producing a real­life Frankenstein's monster.

如果用这种方式戏弄自然，我们可能将制造出一个现实生活中的弗兰肯斯坦怪物。

(toy with戏弄；摆弄；不太认真地考虑，把......当作儿戏

[一词多义]　写出下列句子中toy with的汉语意思

(1)Children today would rather toy with smart cellphones.摆弄

(2)It must be pointed out that if we toy with nature，we will bear the consequence.戏弄

(3)I've been toying with the idea of cutting back on the production.不太认真地考虑

Cloning is producing an exact copy of a plant or an animal using its cells.克隆是用某种