题干
Xiandao Lake in Yangxin is the famous place ______ we'll visit next week.
A：that
B：who
C：where
D：whom
答案(点此获取答案解析）
A
Xiandao Lake in Yangxin is the famous place ______ we'll visit next week.
A：that
B：who
C：where
D：whom
性质：“①最小正周期为
；②图象关于直线
对称；③在
是（ ）
，集合
，
，那么集合
等于( )