地球目前出现的几大生态危机包括（）
A、人口
B、粮食
C、环境
D、资源
E、能源
参考答案：A, B, D, E
远东厂有女工220人男工270人，女工占全厂______%，男工占全厂______%
Harry Potter only had a small room ____ when he just came to his aunt’s.
Choose the wrong answer :
A．to sleep
B．to sleep in
C．in which he could sleep
D．where he could sleep
