1 . 尽管克隆人类胚胎在很多国家不合法，但一些科学家正在努力推进研究，以制造出克隆的人类婴儿。
While cloning human embryos is not legal in many countries, some scientists are already __________ __________ _________ the research in order to produce a cloned human baby.

2 . 他们正在飞速消耗自然资源。
They are ______ ______ natural resources ______ ______ ______ ______

3 . While cloning human embryos is not legal in many countries, some scientists are already _______ _______ _______ (努力推进) research in order to produce a cloned human baby.

4 . Just now the two boys were playing games and now they are ____________ (吵架)．

5 . The population of Africa is ________ so rapidly as to cause concern of the whole world.

A．expanding

B．stretching

C．extending

D．spreading

6 . Food supplies in the flood-stricken area ________(run out). We must act immediately before there’s none left. (所给词的适当形式填空)

7 . 尽管克隆人类胚胎在很多国家还不合法，但一些科学家正在加紧研究，以制造出克隆的人类婴儿。
While cloning human embryos is not legal in many countries, some scientists are already ___________ research in order to produce a cloned human baby.

8 . 请认真阅读下列各小题，并根据上下文语境，从方框中选择适当的短语（有两个多余选项），并以其正确的形式填空使语义完整。注意：请将答案的完整形式写在答题卡上相应题号的横线上。

keep pace with; use up; clean up; pick out; before long; push ahead with; follow in one's footsteps; get through; pick up; run out; end up; burn out

1. I understand that other countries have already begun trying to clone human beings,but this doesn't mean that we should__________.
2. Matthew could not__________the game,and as a result of his careless playing we lost.
3. Failing to catch the only train, I __________returning to the train station and spending the rest of the day in the waiting room.
4. I finally managed to__________my driving test.
5. Some scientists are__________research in order to produce a cloned human baby.
6. Due to the pandemic of Covid-19, the conditions in the city are getting worse and supplies are__________
7. I cheered up when I__________my father's voice from among the general conversation.
8. The boy lay on the sofa and fell asleep__________.
9. Nina and Mary were in the kitchen, __________after dinner.
10. Having been doing his homework for four hours, he__________.

9 . Many more firms are p_______ in the growth of demand on the world markets. (根据首字母填空)

10 . —I cannot stand seeing Tom so weak.Now,he has to stay at home.
—You're cheated.He's not really hurt-he's only p_______________(根据首字母填空)