血细胞来源于骨髓中的是 A．B细胞 B．巨噬细胞 C．多能干细胞 D．网状细胞 E．

想一想，填一填。

1．（     ）然大悟      （     ）然起敬          （      ）然处之          （      ）然无恙

2．无（     ）无（     ）     无（     ）无（     ）     无（     ）无（     ）

     无（     ）无（     ）     无（     ）无（     ）

3．理直气（     ）       完（     ）归赵        风驰电（    ）

女性，45岁。确诊胃癌行胃大部切除术，手术止血完善次日出现血腹。化验：血小板计数、出、凝血时间正常。阿司匹林耐量试验延长3分钟，APIT58秒（正常对照36秒），血小板黏附功能降低，Ⅷ因子：Ag活性为1%，血小板对瑞斯托霉素无聚集反应。最可能的诊断是（）

A.血友病甲

B.血友病乙

C.血友病丙

D.血小板无力症

E.血管性血友病

How can they expect to learn anything ________they never listen?

A．while

B．unless

C．lest

D．when

Many people have to work on the weekend. Some people do not mind. Other people think it is terrible.

One man thinks that working on the weekend can be dangerous. He is Graham Coates. Mr. Coates worked in an office in Brighton, England.

On Saturday, May 24, 1986, he went to the office to do some work. When he got in the elevator to go home, it stopped between floors. Mr. Coates could not get out of the elevator. He was trapped! He started to shout, but no one heard him. Then Mr. Coates remembered that it was a holiday in England. No one was going to come to work until Tuesday!

There was nothing for Mr. Coates to do. He had to wait until one his coworkers came to work and found him. With nothing to eat or drink, Mr. Coates ended up sleeping for most of the time.

Early on Tuesday morning, the vice president of the company came into work and found the elevator was not working. When the elevator was opened, Mr. Coates came out cold, weak, and tired. He had been in the elevator for sixty-two hours!

Now Mr. Coates says, “I only uses elevators if they have telephones in them.”

1. Mr. Coates could not get out of the elevator because ______.

A. it was broken            B. it was a weekend

C. it was a holiday           D. it stopped on a wrong floor

2. How long did he stay in the elevator?

A. Twenty-four hours.        B. From Saturday to Tuesday.

C. More than sixty-four hours.     D. From Thursday to Saturday.

3. What did he do in the elevator most of the time?

A. Shouted and screamed.      B. Slept and waited.

C. Telephoned his boss.        D. Ate and drank.   

4. How did he make his way out in the end?

A. The vice-president found him.

B. Some one opened the elevator.

C. The elevator began to work on Tuesday.

D. He found a door in the elevator.

5. What is the best title for this story?

A. An Interesting Elevator       B. A Busy Weekend

C. Elevator Safety             D. Trapped in an Elevator

在实施建设监理的工程上，最基本的要求是( )。

A．减少一般性工程质量事故和工程质量重大事故
B．杜绝一般性工程质量事故和工程质量重大事故
C．减少一般性工程质量事故，杜绝工程质量重大事故
D．杜绝一般性工程质量事故，减少工程质量重大事故