问题 单项选择题

飞机的起飞过程是从静止出发,在直跑道上加速前进,等达到一定速度时离地.已知飞机加速前进的路程1600m,所用的时间为40s.假设这段运动为匀加速直线运动,用a表示加速度,v表示离地时的速度,则()

A.a=2m/s2,v=80m/s

B.a=1m/s2,v=40m/s

C.a=2m/s2,v=40m/s

D.a=1m/s2,v=80m/s

答案

参考答案:A

阅读理解

阅读理解。

  When my wife and I went to live in an Arab country, my friends told us to

be prepared for a culture shock (文化差异).  Later, we realized that the advice

given to us by our friends was correct.

  The culture shock started with the weather.  Here, the burning sun can cook

an egg in a minute!  The hot weather made us feel so tired that we were falling

asleep at midday!

  Another culture shock was the working week. We worked from Saturdays to

Wednesdays, including Sundays. It was also strange to see people praying

(祷告)in a certain direction! They have strict rules for women. They do not let

people see their faces in public. 'I'hey do not let women drive cars, either. All

dresses worn by women have to cover the bodies completely. They believe that

women cannot be seen in public.

  At the weekends, we went camping in the desert.  I will never for-get

watching the sun setting over the desert. We also enjoyed riding on the camels.

In the end, we enjoyed living there, but their culture is very different from the

American culture.

1. The writer experienced the culture shock _____.

A. before going to the Arab country

B. after camping in the desert

C. during stay in the Arab country

D. while watching the sunset

2. People in the Arab country do not go to work _____ 

A. on Mondays and Tuesdays

B. on Saturdays and Sundays

C. on Wednesdays and Thursdays

D. on Thursdays and Fridays

3. Which of the following is strict rules for women?

a. cover faces in public          

b. not go outside

c. be dressed in white          

d. not drive cars

A. a; c                  

B. a; d

C. b; c                  

D. b; d

4. What does the writer think of living in the Arab country?

A. He enjoyed living there.

B. He enjoyed the culture there.

C. He was interested in praying.

D. He felt strange to see the weather.

5. Which animal probably lives in the Arab country?

A. Camels.              

B. Sheep.

C. Pandas.              

D. Kangaroos.

单项选择题