题干
My students，________you have a heart loving life，you always can find things that would make you happy each day.
A：as long as
B：if only
C：as though
D：even though
答案(点此获取答案解析）
A
个候选城市中建
个直销店，且在同一个城市建直销店的个数不超过
个，则该企业建直销店的方案种数为( )