问题 单项选择题

动脉导管未闭有显著肺动脉高压时可出现()

A.头、面部发绀

B.上半身发绀

C.全身发绀

D.末梢发绀

E.下半身发绀

答案

参考答案:E

解析:动脉导管未闭晚期可出现艾森门格综合征,此时可出现肺动脉压力超过主动脉压,左向右分流明显减少或停止,产生肺动脉血流逆向分流入主动脉,患儿呈现差异性发绀,表现为下半身发绀,左上肢有轻度发绀,右卜上肢正常。

阅读理解

Beijing—No Car Day was first started by 34 cities in France on September 22, 1998. It was started to protect the environment. By now, more than 1,000 cities around the world have had a No Car Day.

The first No Car Day in China was in Chengdu in 2001. Other cities, including Beijing, Taipei, Shanghai and Wuhan also support the day.

In Beijing, more and more people are joining in the activity. It asks drivers to leave their cars for one day each week and walk, take a bus or subway or ride a bike to work. The slogan(口号)for the activity is,“If we drive for one less day, we can have one more nice day.” Beijing is trying to have 238 blue sky days this year. In the first quarter of this year Beijing only have 52 blue sky days. This was 11 days less than the number for the same period last year. Car exhaust(汽车尾气) is one of the most important reasons of the pollution. We must do more for No Car Day.

So far, more than 200,000 drivers have shown their support. “We can’t control the weather, but we can choose not to drive.” said Wu Zonghua, a car club chairman.

小题1:There are_______ cities in China that support No Car Day according to the passage.

A.three

B.four

C.five

D.six小题2:The activity of No Car Day encourages Beijing drivers          .

A.not to work on No Car Day

B.to enjoy having a one-day holiday

C.to leave their cars at home to repair

D.to take a bus, or subway, ride a bike or walk instead of driving to work小题3:According to the passage there were           blue sky days in the first quarter of last year in Beijing..

A.52

B.63

C.41

D.238小题4:The air pollution in Beijing is mainly caused(导致)by           according to the passage.

A.cars

B.dust

C.weather

D.rubbish小题5:We can know from the passage that        .

A.more and more people in Beijing are joining car clubs

B.drivers should leave their cars for one day each month

C.more than 1,000 cities around the world have a No Car Day.

D.more people in the world won’t drive any more

单项选择题 案例分析题