Unit 4 Global warming Grammar课时作业

Ⅰ.单句语法填空

　　1．One can gain a lot of experience while doing(do) a part­time job.

　　2．We didn't dare to make a sound for fear of waking the sleeping baby.

　　3．The President refused to answer(answer) further questions on the subject.

　　4．His age was evident in his gray hair and wrinkled(wrinkle) face.

　　5．Hearing the strange sound, the child was shaking with fear.

　　6．Cancer is caused by chemicals in the air we breathe(breath), the water we drink, and the food we eat.

　　7．The scene of the traffic accident is covered with blood and brains, which is extremely disgusting(disgust)．

　　8．He was put into prison because he murdered(murder) an old lady.

　　9．It is expected that the bridge will have been completed by next April.

　　10．Seeing terrified people trying to get out of a burning building, he stood there, terrified．(terrify)

Ⅱ.选词填空

　　for the first time, burn out, contrast with, throw oneself on, again and again

　　1．It's normal for you to feel nervous when you went on the platform for the first time．

　　2．His actions contrast sharply with his promises.

　　3．The hotel was completely burnt out; only the walls remained.

　　4．I have explained again and again, but even now they do not understand.

　　5．I felt a bit tired after a long trip. So I threw myself on the couch and fell asleep soon.

III.阅读理解

When European settlers arrived in North America, they brought European diseases with them.Then, huge numbers of Native Americans began dying from smallpox (天花) infection.Five­hundred­year­old documents record this tale, but now scientists say