船用泵描述正确的是（）。A、常用的船用泵主要有三大类，容积式泵、叶轮式泵、喷射式泵B

短文改错（共10小题；每小题1分，满分10分）

此题要求改正所给短文中的错误,对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个(√);如果有错误(每行只有一个错误)，则按下列情况改正：

此句多一个词：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。

此句缺一个词：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。

此句错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。

Several years before, Mrs. Green was a famous musician who taught       

小题1:         

the music at a college, and many of her students succeeded in their            小题2:         

business. Live with her husband at home now, Mrs. Green, in common         

小题3:         

as some old people, finds her memory is failing. Sometimes she forgets        小题4:        

what she has done or will do, that often gets her in trouble. Mr. Green          小题5:        

noticed it and persuaded her into see a famous doctor who lives               小题6:         

in the capital. He bought two tickets to London and then                     小题7:         

asked her to put it into her handbag while she was playing                     小题8:        

piano. When they reached the airport the next morning, the old                 小题9:        

woman said,“ If only I have brought my piano. I’ve left the tickets on it.”        小题10:        

用所给词的适当形式填空。（10分,每小题2分）

1. John has two ______ (knife) .

2. The pen isn’t mine. It’s ______ (she).

3. What color are ______ (this) coats?

4. My friend and I ______ (be) students.

5. What ______ (do) he look like?

革兰阳性菌引起角膜溃疡最主要的临床体征是（）

A.地图状或树枝状溃疡

B.圆形或椭圆形脓肿病灶

C.液化样角膜坏死

D.环形角膜基质脓肿

E.苔藓状角膜溃疡

关于计算机网络，下列说法中错误的是( )

A．两台通过光纤在通信的计算机肯定已经联网
B．两台计算机之间没有任何连线，但它们却在通信，应该说它们是联网的
C．一台计算机正通过Internet收发E-mail，这台计算机肯定是联网的
D．两台用双绞线连起来的计算机肯定已经联网

从我国证券市场目前的实际情况来看，信用交易主要以融券方式为主。( )