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素能提升演练（三十一）
选修10 Units 3~4
Ⅰ. 单词拼写
1. Stress should be put on the _________ (预防) of diseases.
2. She _______ (结束) her talk with a funny story.
3. This ________ (假的) leather feels like the real thing．
4. His annual income was _______ (估算) at ten thousand dollars.
5. I never _______ (怀疑)for a minute that you were married.
6. We give preference to _________ (申请人)with some experience.
7. He ________ (请求)them to stop making such a noise.
8. It was ________ (体贴的) of you not to disturb us.
9. These watches were _______ (进口)from Switzerland.
10. The validity of such ________ (证书) is recognized in society.
Ⅱ. 单项填空
1. These phrases would be difficult _________ if they were not abbreviated.
A. to be used B. to use
C. to use it D. to use them
2. _______ smokers may tell you, people can become easily addicted to nicotine, which is why they have trouble quitting smoking.
