一级复床除盐水水质指标电导率≤（）μS/cm（25℃）。
A、1
B、3
C、5
D、10
参考答案：C
Which of the following does NOT imply an informationally efficient market（）
A. Many profit-maximizing participants, each acting independently of the others, analyze and value securities.
B. The timing of one news announcement is independent of other news announcements.
C. A risk-free asset exists, and investors can borrow and lend an unlimited amount at the risk-free rate.
附加题：指错（下面每句话中有一处错误，从A、B、C、D中选出错误的一项，勿需改正。）
1. It was very kind for them to meet me at the railway station. ______
A B C D
2. Some people read the books and watch TV while others have sports. ______
3. They will very happy when I tell them the news. ______
4. I had to drive to home because my friend Bob had drunk too much beer. ______
5. I'll have the car wait at the gate. Will that be all right? ______
6. Tom and Jane went on do their homework till midnight. ______
7. I want to thank you again for have me in your home for the holiday. ______
8. That pair of trousers of yours are very dirty, you'd better clean it. ______
9. Know some everyday English will be of great help. ______
10. We hope you a pleasant trip back home. ______
