“蹦极”是一项非常刺激的体育运动。某人身系弹性绳自高空P点自_爱下问搜题

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问题选择题

“蹦极”是一项非常刺激的体育运动。某人身系弹性绳自高空P点自由下落，图中a点是弹性绳的原长位置，c是人所到达的最低点，b是人静止悬吊着时的平衡位置，人在从P点下落到最低点c点的过程中，下列说法不正确的是

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A．人在Pa段做自由落体运动，处于完全失重状态

B．在ab段绳的拉力小于人的重力，人处于失重状态

C．在bc段绳的拉力大于人的重力，人处于超重状态

D．在c点，人的速度为零，处于平衡状态

答案

答案：D

阅读理解

阅读理解。

Zhang Wei	I am a Chinese boy. I'm fifteen years old. Now I live at Wide Street in Hangzhou, China. I like comedies and action movies. I don't like thrillers or documentaries.
Han Li	I'm a student in No. 1 High School, Hefei, China. I'm a sixteen-year-old girl. I'm kind of fat. I want to lose weight. Ioften go to the movies on weekends with my friend Linda. I like action movies anddocumentaries, but I don't like thrillers or comedies.
Linda	I'm from England. I am thesame age as Han Li. But I am heavier than she is. We are in different classes. I enjoy making friends. I don't like action movies or thrillers. They are boring and scary. I like comedies and documentaries. They are funny.
Tom	I come from Paris, and I am fourteen years old. I'm tall and thin. Zhang Wei is my classmate. I like action movies and comedies. I also like thrillers. But I don't likedocumentaries.

1. Where is Zhang Wei from?

A. China.
B. England.
C. America.
D. Paris.

2. How old is Linda?

A. 14.
B. 15.
C. 16.
D. 17

3. When does Han Li go to the movies?

A. On Monday.
B. On Wednesday.
C. On Friday.
D. On Saturday or on Sunday.

4. Who likes thrillers?

A. Zhang Wei.
B. Han Li.
C. Tom.
D. Linda.

5. Which of the following is WRONG?

A. Han Li is Linda's good friend.
B. Tom is fatter than Zhang Wei.
C. Zhang Wei and Han Li like action movies.
D. Linda and Tom like comedies.

单项选择题

患者吐血色红或紫黯，脘腹胀闷，甚则作痛，口臭，便秘，舌红苔黄腻，脉滑数。治疗应首选

A．泻心汤合十灰散

B．白虎汤合四生丸

C．玉女煎合十灰散

D．失笑散合四生丸

E．丹参饮合十灰散