At school, some students are active some are shy, yet they can be good friends with one another.
A. while
B. although
C. so
D. as
网友回答
(答案→)A. while
B. although
C. so
D. as
解析：本题考查并列连词。题干句意为：在学校，一些学生很活跃而一些却很害羞，然而他们都可能彼此成为好朋友。根据句意选while，表示两个分句中两种情况的对比。