对于携带孩子的父母应向他们推销()。
A.客房;
B.相连房;
C.商务房;
D.套房
参考答案:B
从下面两种塑料中选择合适的来制造不同的产品(填编号):(A )聚乙烯 (B )聚氯乙烯
(1)食品保鲜膜
(2)服装包装袋
(3)塑料牛奶瓶
The new lecture course differs from the old one, ________ the students aren't required to attend lectures.
A.which that
B.that
C.which
D.in which