问题 多项选择题

Ac与Sc云的主要区别是()

A.多数Sc云块视宽度大于5度(地平线30度以上)。

B.Sc看起来结构松动,没有Ac那么紧密。

C.云高在2500米以上时,一般为Ac云。

D.云的颜色不同。

答案

参考答案:A, B, C

单项选择题
阅读理解

阅读理解。

                                              Liu Xiang Will Resume (恢复) Training

     Athens Olympic 110m hurdle champion Liu Xiang felt so relieved to return to racetrack after getting

out of the great number of social activities.

     Liu arrived in hometown Shanghai Wednesday night and was about to resume training shortly after.

     "I am so exhausted (疲惫的)from so many social activities, which made me even more tired than

training," said the 21-year-old Liu, who wrote a new chapter in China's Olympic history by winning the

country's first ever athletics short-distance running title in the men's 110m hurdles (栏) in Athens in August.

     "I am happy that I will resume my training soon back in Shanghai," said the Shanghai native. He turned

into an instant national hero with the Olympic glory (荣誉,光荣) and one of the most popular Olympic gold

medalists, taking part in scores of celebration activities since he returned to China early September.

     "My regular training has been interrupted for such a long time that I think I can only run at about 13.5

seconds now," said Liu, who clocked a world record-tying time of 12.91 to clinch the title.

     "I would rather forget what I have achieved in the past and try my best to realize a higher goal," he said.

     Liu already missed the Berlin Golden League Series on Sunday and won't be able to catch the IAAF

Grand Prix final slated for September 18-19 in Monaco. He plans on attending an IAAF all-star tournament

in Japan at the end of this month.

1. This passage mainly talks about ______.

A. victory of Liu Xiang

B. Liu Xiang's resumption to the racetrack

C. dream of Liu Xiang

D. Liu Xiang's high aim

2. From the passage we can see ______.

A. Liu Xiang is content to go back to training

B. Liu Xiang will win Golden League Series on Sunday

C. Liu Xiang wasn't good at social activities

D. Liu Xiang was refreshed after so many social activities

3. The underlined word "relieved" means ______.

A. sad

B. glad

C. worried

D. disappointed

4. Which of the following is NOT wrong?

A. Liu Xiang has had a quiet life for as long as half a month.

B. Liu Xiang has missed two races because of his social activities.

C. Liu Xiang has made up his mind to stop his social activities.

D. Liu Xiang has deserted his present career.