第一部分：单项填空 (从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，每小题1分，共15分）
1. Take your time — it’s just_____ short distance from here to_____ restaurant.
A.不填；the B. a; the C. the; a D.不填；a
2. Scientists are convinced
_____ the positive effect of laughter _____ physical and mental health.
A. of; at B. by; in C. of; on D. on; at
3. Kathy ______ some French while she was away on a business trip in France.
A. picked up B. took up C. made up D. turned up
4. The _______ boy made the police and his family _______.
A. gone; puzzled B. missing; puzzled C. missing;puzzlingD. lost; puzzling
5. Liu Xiang is believed _____ over $ 20 million in advertisements last year alone.
A. to earn B. have earned C. to have earned D. having earned
6．Mark was a student at this university from 2006 to 2011，________he studied very hard and was made
