1. I _____ her not to walk on the thin ice but she would not listen to me.

A. warned B. persuaded C. suggested D. noticed

2. When products made in factories _____, they are thrown away as garbage.

A. come to an end B. are put to use

C. are used up D. wear out

3. The microphone enabled them to keep in touch, in other words, it made it _____ for them to contact each other.

A. likely B. able C. possible D. probable

4. In spite of the thunderstorm, the children slept _____ all night.

A. deeply B. soundly C. loudly D. noisily

5. Professor Jordon is well known for his _____ into the habits of the common housefly.

A. examination B. introduction

C. research D. expression

Keys: 1-5 ADCBC

6. Stressful environments lead to unhealthy behaviors such as poor eating habits, which _____ increase the risk of heart disease.

A. in turn B. in return C. by chance D. by turns

7. They decided to leave the waiter a big _____ because the food and service had been excellent.

A. note B. reward C. tip D. gift

8. There was a good _____ of the countryside from the front of the bus.

A. sight B. view C. scene D. scenery

9. There are usually at least two _____ of looking at every question.

A. ways B. directions C. views D. opinions

10. The book seems to have been _____ from various books and articles.

A. pieced together B. taken off

C. broken away D. pulled out

　　Keys: 6-10 ACBAA