试题与答案

1岁半小儿因发热、咳嗽5天来诊。查体:嗜睡,皮肤有猩红热样皮疹,呼吸急促,鼻扇,三凹

题型:单项选择题 A3型题

题目:

1岁半小儿因发热、咳嗽5天来诊。查体:嗜睡,皮肤有猩红热样皮疹,呼吸急促,鼻扇,三凹征明显,两肺散在性中、细湿啰音。血象:WBC25×109/L,N0.85,L0.15。

患儿入院后经抗生素治疗,病情一度好转,近2天病情加重,今晨突起呼吸困难。体查:体温39.5℃,脉搏160次/分,呼吸64次/分,面色苍白,唇周发绀,肝肋下1.5cm,脾未及。此时首先应考虑 ()

A.支气管肺炎恶化

B.支气管肺炎伴心衰

C.支气管肺炎伴中毒性心肌炎

D.并发霉菌感染

E.出现肺炎的并发症(脓胸、脓气胸)

答案:

参考答案:E

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题型:问答题

如图所示,一个固定在竖直平面上的光滑半圆形管道,管道里有一个直径略小于管道内径的小球,小球在管道内做圆周运动,从B点脱离后做平抛运动,经过0.3秒后又恰好垂直与倾角为450的斜面相碰到.已知圆轨道半径为R=1m,小球的质量为m=1kg,g取10m/s2.求

(1)小球在斜面上的相碰点C与B点的水平距离

(2)小球经过圆弧轨道的B点时,所受轨道作用力NB的大小和方向?

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题型:单项选择题

完形填空:下面的短文有l5处空白,请根据短文内容为每处空白确定l个最佳选项。

Obesity(肥胖) Causes Global Warming.

The list of ills attributable to obesity keeps growing: Last week, obese people were accused of causing global warming.

This ______(51)comes from Sheldon Jacobson of the University of Illinois, US, and a doctoral student, Laura McLay. Their study ______(52) how much extra gasoline is needed to haul fat Americans around. The answer, they say, is a billion gallons of gas per year. ______(53)

There has been ______(54) for taxes on junk food in recent years. US economist Martin Schmidt suggests a tax on fast food ______(55)to people’s cars. "We tax cigarettes partly because of their health cost," Schmidt said. "Similarly, leading a lazy life style will end ______(56) costing taxpayers more."

US political scientist Eric Oliver said his first instinct was to laugh at these gas and fast food arguments. But such ______(57) are getting attention.

At the US Obesity Society's annual meeting, one person ______(58) obesity with car accident deaths, and another correlated obesity with suicides. No one asked whether there was really a cause-and-effect relationship. " The funny thing was that everyone took it ______(59)." Oliver said.

In a 1960s study, children were ______(60) drawings of children with disabilities and without them, and a drawing of an obese child. They were asked ______(61) they would want for a friend? The obese child was picked last.Three researchers recently repeated the study ______(62) college students. Once again, ______(63) no one, not even obese people, liked the obese person. " Obesity was stigmatized." the researchers said.

But, researchers say, getting______ (64) is not like quitting smoking. People struggle to stop smoking, and, in the end, many succeed. Obesity is different. Science has shown that they have limited personal control over their weight Genes also______ (65) a part.

53.(单项选择题)          

A.turns

B.means

C.says

D.costs

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