2.The fish called “salmon” spends a long time in ______.

　A. salt water B. rivers C. fresh water D. its birthplace

1.Most animals move from one place to another at a certain time to _______.

　A.give birth B. enjoy warmer weather

　C. find food more easily D. find beautiful places

5.No，he can't. “…Because every one of his cells will be broken.” “…it won't work. If we freeze huge creatures(生物)like humans, every one of their cells(细胞)will be broken.”是答案的出处。

4.Around 1000 people. 本题属表层理解题。由“Now around a thousand people are going to take cryogenic treatment(处理)，though most scientists say it won't work.”可知，

3.They usually keep it in liquid nitrogen at a temperature of 328 degrees below zero. 显然，答案出自“Once the body is frozen, it is kept in liquid nitrogen(液态氮)at a temperature of 328 degrees below zero.”这句话中。

2.They hope that they can come back to life one day. “…When a cure is found, warm up his or her body，bring it back to life and take the cure.”是答题的依据。

1.In the freezer. 答案就在“But most people want to go into the freezer.”这句话中。但要注意most一词方能正确解答。

4.A.14岁的孩子属于early teenage. 他们的睡眠时间与成年人相同。故答案为A。

　Passage 31

　[答案与解析]这篇小品文的意思是：有很多人希望死后被送进冷藏库，将尸体保存在零下320度的液态氮中。等将来医疗条件允许，可以治愈时，再解冻，接受治疗，就可以死回生了。尽管科学家们对此想法表示怀疑，仍有一千多人打算接受低温处理。

3.D.判断人们是否得到足够的睡眠不是根据睡眠时间的长短而是人们是否精神焕发地去从事一天的工作与学习。

2.B.短文的第二段有交待：60%以上的成年人大约睡7-8小时。