向心性视野缩小可见于（） A.中心性浆液性视网膜脉络膜病变 B._爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题多项选择题

向心性视野缩小可见于（）

A.中心性浆液性视网膜脉络膜病变

B.黄斑变性

C.视网膜色素变性

D.癔病

E.青光眼晚期

答案

参考答案：C, D, E

改错题

短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行做出判断:
     如有错误(每行只有一个错误),则按下列情况改正:
     此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
     此行缺一个词:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
     此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。
     注意:原行没有错的不要改。

A few days ago I saw an instructive program on TV.
It was about what the traffic problem in cities. It seems
that a great deal of damages is done by traffic. All our
cities are suffering from this. Some buildings are actual
falling to pieces. It's often fast to walk than to go by car
and by bus. The problem has been getting worse day by
day. This is only one of the thousands problems in our
cities. Now all sorts of terrible thing happen to our
cities. The question is how we can do about it. Our
roads are never designed for so heavy traffic. It
is time the government does something about these problems.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____

单项选择题

如果newdir目录非空可以用（）强制删除

A.rmdir newdir

B.mkdir newdir

C.rm dir-frnewdir

D.rm newdir