A．戏弄，摆弄　B．义无反顾地进行　C．供出售

　　D．一般而言 E．导致；造成 F．全神贯注于

　　(　　)1.I wish you'd concentrate on what I'm saying.

　　(　　)2.There was a camera for sale in the window.

　　(　　)3.In general，employers do little to help the single working mother.

　　(　　)4.You shouldn't toy with great issues.

　　(　　)5.The government of China intends to push ahead with its space project.

　　(　　)6.This policy has led to a dramatic increase in our prison population.

　　[答案]　1－6　FCDABE

　　The perfect copy

　　Scientists have announced that they have cloned(克隆)the first human embryo(胚胎)①.This has caused much debate round the world.On the one hand，some scientists point out that if you clone an embryo, you can produce valuable human tissues－such as bone or lung tissue(组织)－that could be used to save human lives②. On the other hand，many people，including some scientists③，disagree and are afraid that, if mankind toys with(戏弄)nature in this way，we may be on our way to producing a real­life(现实生活中的)Frankenstein's monster(怪物)．

　　完美的复制品　

　　科学家宣布他们已经克隆出了第一例人类胚胎。这引起了世界范围的争论。一方面，一些科学家指出如果克隆人类胚胎，你就可以制造出宝贵的人体组织--如骨组织或肺组织--它们可以用来拯救人类的生命。另一方面，包括一些科学家在内的许多人持不同意见，他们担心人类如果如此戏弄自然，可能将制造出一个现实生活中的弗兰肯斯坦怪物。

[助读讲解]　①that引导宾语从句，作announced的宾语。②第一个that引导宾语从句，而在宾语从句中又含有if引导的条件状语从句。第二个that引导定语从句，修饰valuable human tissues。③介词短语including some scientists＝some