1. [单选题]Nowadays people sometimes separate their waste to make it easier for it .
A. reusing
B. reused
C. reuses
D. to be reused
2. [单选题]Why was David able to get the job in the company?
A. He had done well in all his exams.
B. He had written some computer programs.
C. He was good at playing computer games.
D. He had learnt to use computers at schoo1.
3. [单选题]若判断天气图中的台风能否登陆台湾岛，最有价值的信息是台风的
A. 形成原因 B．形成源地
B. 移动路径 D．移动快慢
4. [单选题]卷柏的孢子叶不具叶舌。( )
A. 正确
B. 错误
5. [单选题]有性生殖是核相交替出现的前提。( )
A. 正确
B. 错误
