当今环境破坏问题哪些与森林破坏有关？
参考答案：
气候变暖，臭氧层破坏，生物多样性减少，酸雨蔓延，森林锐减，土地荒漠化，水体污染，海洋污染，固体废物污染。
心房钠尿肽的主要作用是（）
A.重吸收Na+排K+，使血量增加
B.重吸收K+排Na+，使血量增加
C.排H2O排Na+，使血量减少
D.重吸收Na+排H2O，使血量增加
E.重吸收H2O排Na+，使血量增加
用所给词的正确形式填空。
1. That was one of the days in 1998. (bad)
2. We have rain this year than last year. (much)
3. The question isn't so hard. Everyone can answer it (easy).
4. Everybody needs help. (other)
5. "What can we do for the people?" They often ask . (they)
6. We mustn't hunt the animals. (protect)
7. Who jumps in your class? (high)
8. It isn't to talk to him. He won't listen to you. (use)
9. I don't know why he isn't coming to the party tonight. (real)
10. How it is snowing! (heavy)
