1 . The medicine is harmful to children but_________(harm) to adults. (所给词的适当形式填空)

3 . Alcohol is known to be ___________ to humans in large quantities, while proper amount of it is __________ and won’t do harm to people. (harm) (所给词的适当形式填空)

5 . We all have a wish that all the food now is harmless _______ us. (用适当的词填空)

6 . Organic farming provides all kinds of _______ (harm) food for human beings. (所给词的适当形式填空)

7 . Some think television hurts children and others regard it as ________ (无害的) entertainment. （根据汉语提示单词拼写）

8 . Sugar is _______ to our health, but eating it too much is _______ to our health, that is to say, eating too much sugar does _______ to our health. (harm) (所给词的适当形式填空)

9 . Too much drinking is ____________ to the health.

A．harm

B．harmed

C．harmful

D．harmless

10 . 词性转换
1. complete v.完成→________ adv.十分地；完全地→_______ n.完成，结束
2. prevent v.阻挡，防止→________ n.预防，防止
3. harmony n.融洽相处，和谐→________ adj.和谐的，和睦的
4. design v.设计→__________ n.设计师
5. harm v.伤害，损害→________adj.有害的→__________ adj.无害的
6. agriculture n.农业→_________adj.农业的
7. replace v.以……替换，更换→_______n.替换
8. consume v.消费→________ n.消费者→________ n.消费；消耗
9. beauty n.美，美丽→_______ adj.美丽的→________   adv.漂亮地→ ________ vt.使美化
10. narrow adj.狭窄的，不宽的 v.变窄→________ adv.狭隘地；勉强地
11. publish v.出版，发行→_________ n.出版商，发行人
12. limit n.限度，界限 v.限制→_________ adj.有限的→________adj.无限的
13. benefit n.好处，益处 v.有益于；有助于→_________ adj.有益的
14. please v.使高兴→________adj.令人愉快的→_________ n.高兴→_______ adj.高兴的
15. energy n.力量，活力→________ adj.精力充沛的