They would rather spend time_____ than ____in the street.

A read; wander                  B reading; wandering

C reading; to wandering              D reading; wander

万里长城在秦始皇时期，其主要功能是 [ ]

A．旅游景点

B．军事防御工程

C．划定国界

D．扩大秦朝在世界的影响