______函数用于返回n个空格。
参考答案:Space$
Of the seven days in a week, Saturday is said to be the most popular __________ for a wedding in some countries.
A.way
B.situation
C.event
D.choice
遵医行为包括哪几方面()
A.接受随访
B.避免禁忌行为
C.正确使用处方用药
D.执行和坚持执行治疗计划
E.以上均正确