肺脏属于（）.A.实质器官 B.有腔器官 C.分层器官 D.有管腺

已知集合A={-1，2}，B={x|mx+1=0}，若A∪B=A，则m的值为______．

阅读理解。

     Mr. Evans lived in a city. He was a bus driver in a company three years ago. He drove well and the

people in the company all liked him. But a terrible accident changed (改变) his life. One spring he drove

his bus with twenty-four workers to visit a place of interest. They had a good time there. But on their way

back home, their bus was hit by a truck (卡车) because the truck driver was drunk (醉). Four workers

were killed and half of the rest of the workers got badly injured. Mr. Evans was also injured. After he came

out of hospital, he left the company and became a traffic policeman. He tried his best to stop the drivers

from breaking the traffic riles. He worked hard and was strict with the drivers, especially the drivers that

were drunk. So they were afraid of him. But the people liked him, for he was a good policeman.

1. How did the accident happen? 

A. The truck hit the bus.

B. The bus hit the truck.

C. The bus hit a big tree.

2. How many people were injured in the accident?

A. Four.

B. Ten

C. Eleven.

3. What did Mr. Evans do after he left hospital?

A. He was a bus driver.

B. He was a policeman.

C. He was a truck driver.

浙江绿色农产品标识的主要寓意是什么？

下列各句中，“死”字意义相同的语句是(　　)。

A．这是一座死火山　

B．开会的时间要定死

C．你这个人真是死脑筋　

D．这是一条死胡同