4 . 选词填空

atmosphere, brief, respect, fancy, grace, absolute, moment, horrible, please, represent

1. I spent a few ________ thinking what I was going to say.
2. We are impressed with the ________ with which a dancer leaps into the air.
3. She tries to create an ________ of calm and security for her children where they can live happily.
4. Mr King was chosen ________ the company at the conference.
5. I wanted a simple black dress, nothing ________.
6. He made his reasons for buying another car ________ clear.
7. The family members screamed ________ when they saw the snakes crawling on the ground.
8. The old man was ________ to watch his son appear on TV.
9. The scientist who is making a speech ________ by everyone present.
10. ________ speaking, English is so useful that all of us students should learn it well.

7 . 词性转换
1. harm vt.&n.伤害，损害→_______adj.有害的→_________adj.无害的
2. argue v争吵；争辩；论证→________n.论点；论据
3. concentrate vi.专注，专心；集中注意力→_________n.专心，专注
4. concern vt.使担心→_________adj.关切的，关心的
5. reward v奖励；奖赏→_______adj.有益的；有意义的；报酬高的
6. add v.加；增加→_________n.增添；添加
7. limit v.限制；限量→________adj.局限的，限制性的
8. brief adj.简洁的，简明的→________adv.简短地；简要地
9. percent n.百分比；百分数→_________n.百分率