蝗虫的若虫与成虫相比，本质的区别是[ ]
A．生殖器官没有发育成熟
B．身体较小
C．内脏器官结构不同
D．若虫都不能飞
答案：A
She was told to wear flat shoes _____ her back problem. [ ]
A. on account of
B. regardless of
C. in terms of
D. in case of
入境旅游团人数减少，要在入境时注销未到者，准备好书面材料并签字确认，签字确认者应是：（ ）
A．领队
B．全陪
C．地接社经理
D．国内组团社领导
