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单项选择 1. Although they are good friends, ______ they have little ______. A. but; in general B. but; in common C. yet; in common D. /; in general 2. She thought it was worthwhile for her to teach in the small village to make a ______ to the life of the children there. A. difference B. sense C. study D. discovery 3. Rather than ______ on a crowded bus, he always prefers ______ a bicycle. A. ride; ride B. riding; ride C. ride; to ride D. to ride; riding 4. Mr Johnson preferred ______ heavier work to do. A. to be given B. to be giving C. to have given D. having given 5. I’d like to go to Beijing for our holiday, ______ my husband prefers to Qingdao. A. though B. as C. while D. for 6. The ______ expression on her face showed that she ______ her manager’s idea. A. confusing; wouldn’t quite understand B. confused; hadn’t quite understood C. confusing; hadn’t quite understood D. confused; shouldn’t quite understand | 
