问题 单项选择题

下列关于操作系统设备管理的叙述中,哪个是不正确的______。

A.设备管理使用户能独立于具体设备的复杂物理特性而方便地使用设备

B.设备管理利用各种技术提高CPU与设备、设备与设备之间的并行工作能力

C.操作系统对用户屏蔽了实现具体设备I/O操作的细节

D.操作系统对设备尽量提供各种不同的接口

答案

参考答案:D

阅读理解

阅读理解。

     Last Saturday, my classmates and I went to the Hada Hill for a picnic (野餐) On that day, the weather was fine and the sky was clear and blue, so all of us were excited and happy. We left home and went

there by bike with fruit, eggs, meat, vegetables, cookers (炊具) and some other things.      

     About one hour later, we arrived at the foot of he hill. There were many nice flowers and green trees.

Birds were singing sweet songs, How happy we were ! Then we were busy with the picnic.  Some of us

got water,  some cut the meat and vegetables and some cooked, others sat on the grass to wait for a nice

lunch. At one o'clock in the afternoon, our lunch was ready.

     After lunch, at three o'clock, we began to climb the hill. We all tried to climb to the top of the hill.

What a happy time we had! I will never forget it.

根据短文内容,选择正确答案。

l. What did they go to the Hada Hill for?

A. Having a picnic.    

B. Seeing nice flowers.

C. Eating some fruit.    

D. Seeing green trees.

2. What was the weather like that day?

A. Rainy.        

B. Windy.

C. Fine.          

D. Cloudy.

3. How were they feeling that day?

A. Excited and happy.

B. Bored and tired.

C. Disappointed and tired.

D. Busy and bored.

4.  About an hour after leaving home, they _             

A. went back from the hill

B. got to the top of the hill

C. got to the foot of the hill

D. began to sing and dance

5. When was the lunch ready?

A. At l:00 p.m.        

B. At 3:00 p.m.

C. At 5:00 p.m.        

D. At 4:00 p.m.

解答题