问题 单项选择题

男性,41岁,患急性梗阻性化脓性胆管炎,已做胆总管切开减压引流,输液补充血容量,静脉滴注5%碳酸氢钠液和血管扩张药,静脉注射西地兰。因休克无好转,拟早期一次静脉滴注大剂量地塞米松,请说出下列哪项是其非抗休克作用

A.阻断α受体兴奋,使血管扩张,改善微循环

B.保护细胞溶酶体,增进线粒体功能

C.增强心肌收缩力,增加心排血量

D.促进糖原异生,有利于减轻酸中毒

E.减低血液黏滞性,可预防血栓形成和栓塞

答案

参考答案:E

阅读理解

Gina was a 3rd grader. She was very clever, but she had no friends at school until Rita joined her class. New to the city and too shy to make any friends, Rita did not mind being Gina's friend. At least she had someone to play with.

One day the teacher scolded (训斥) Rita for not concentrating when she was doing some math problems. The whole class laughed at her and Rita cried hard. The teacher had patiently explained how to do them, but Rita was just not able to understand.

Gina told her mother about Rita's bad day. "Why don't you try to help her?" asked her mother. " She likes you very much."

" Mommy, I don't have time to waste." said Gina.

" But Rita is your friend and if you don't help her, who will?" said her mother. But Gina didn't think so.

" Then Gina's mother decided to act tough(强硬地)." If you don't help her, I will not let you watch cartoons for a week."

Extremely unhappy, Gina taught Rita. Rita understood, for Gina knew how to explain things simply. Rita was excited and told everyone what a good friend Gina was.

One day, Gina made a mistake, and the principal (校长) asked Gina to pick up the waste paper in every classroom after school.

After school, Gina began to clean the classrooms and she felt very sad. Rita found out about it and went to help her do it.

From that day, Gina and Rita became the best of friends.

小题1: Did Rita mind making friends with Gina?

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小题2: What happened after the teacher scolded Rita?

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小题3: Why did Rita understand the math problems after Gina taught her?

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小题4:How did Gina feel when she was made to pick up waste paper?

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小题5:What can we learn form the story?

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单项选择题