治疗弱视的最佳期是()。
A.1~2岁
B.3~5岁
C.12~13岁
D.5~7岁
参考答案:B
解析:弱视治疗的最佳期是3~5岁,即学前期,12~13岁以后弱视已经巩固,难以治疗。
句型转换
1. We shall hold a meeting tomorrow.
2. When shall we hold the meeting?
3. I won't help her unless she asks.
4. We will hold the 2008 Olympics in Beijing.
5. Atlanta will kill any man who cannot run as fast as her.
6. You can't clean this dress; you must dry-clean it.
7. They will have to take a different attitude.
8. You are to leave the bag here.
9. They will send him to school on Wednesday.
10. People mustn't leave bicycles in the hall.
11. We are going to paint the wall green.
12. They will ask you several questions.
锅炉型式代号中,表示卧式内燃锅炉的是( )。
A.WOB.WNC.WWD.WM