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问题 单项选择题

患儿，6岁。患心肌炎6个月，面色晦暗，胸闷憋气，时觉心前区刺痛，时欲呕恶，舌质紫暗，苔白腻，脉滑。其证候是（）

A.风热犯心

B.湿热侵心

C.气阴亏虚

D.心阳虚弱

E.痰瘀阻络

答案

参考答案：E

解析：病程6个月，面色晦暗，心前区刺痛，舌质紫暗，苔白腻，脉结代，符合痰瘀阻络证的证候特点。

阅读理解

阅读理解。请根据短文内容选择最佳答案。

      My name is Bill. I'm from the USA. My Chinese teacher is Wang Mei. She is a good teacher. I have many

friends at school. Jimmy is my best friend. He's from Canada. He's tall and he has black hair. Mary is a short

girl. She likes elephant. Sandra is from England. She has long brown hair. She likes monkeys. Wang Dong is

from China. He has short black hair. He speaks English well.

1. Wang Mei is Bill's _____________.

A. teacher

B. friend

C. mother

2. _____________ is from Canada.

A. Wang Dong

B. Jimmy

C. Sandra

3. _____________ has brown hair and likes monkeys.

A. Mary

B. Sandra

C. Jimmy

4. Wang Dong is good at (擅长于) _____________.

A. English

B. painting

C. Chinese

5. How many friends does Bill have?

A. Three.

B. Four.

C. Five.
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问答题

在游乐场上的一个升降机中，把一重物置于台秤上，台秤与力的传感器相连，当升降机从静止加速上升，然后又匀速运动一段时间，最后停止运动；传感器的屏幕上显示出其受的压力与时间的关系（N-t）图象，如图所示，则：（g取10m/s2）

（1）该升降机在启动阶段经历了______秒加速上升过程．

（2）该升降机的最大加速度是______m/s2．
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