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问题 单项选择题 案例分析题

女，24岁，因孕8周行人工流产负压吸引术，术中出现面色苍白、出汗、头晕胸闷等不适，体检：血压80／50mmHg，心率50次／分。

应如何处理（）

A.用强心药

B.注射阿托品

C.用地塞米松

D.静脉注射葡萄糖

E.静脉注射呋塞米

答案

参考答案：B

填空题

Hangzhouhua (杭州话)：use it or lose it

There are about 6.000 languages in the world and some experts say that as many as half of these languages will disappear(消失) in the next one hundred years. Will Hangzhouhua be one of 1)________? It’s a 2)________ that more people are asking.

In China, Putonghua is the official language. That 3)________ it’s the language of government, business and the media (媒体). And it’s also the language that is 4)________ in schools.

Hangzhou is a special city. It used to be the capital of Wu and Yue States in the 10th century during the Five Dynasties period. Now it is modern, fashionable and also beautiful. And Hangzhouhua shows that by being modern, fashionable and beautiful.

Young people still speak Hangzhouhua but not as 5)________ as their parents and grandparents. They are under more and more pressure to speak Putonghua. So the language is being used 6)________ often in everyday life. Some people want to keep the language from disappearing completely 7)_________ building museums and having cultural festivals to save it. But a language isn’t a painting 8)________ a book. It’s a living thing and you 9)________ use it or lose it.

If people 10)________ using it in their daily lives, a museum or a festival will not help. It will be lost forever, like the Yangtze River dolphin.
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计算题

一物体以初速度v1做匀变速直线运动，经时间t速度变为v2，求：

(1)物体在时间t内的位移；

(2)物体在中间时刻的速度vt/2和中间位置的速度vx/2；

(3)比较vt/2和vx/2的大小。
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