下列河流中，冬季有结冰期的是[ ]
A．黑龙江、珠江
B．珠江、长江
C．长江、黄河
D．黄河、黑龙江
答案：D
My sister met him at the Grand Theatre yesterdays afternoon, so he ________ your lecture.[ ]
A．couldn't have attended
B．needn't have attended
C．mustn't have attended
D．shouldn't have attended
地方陪同在接团前需要向饭店提供哪些旅行团的信息?
