问题 选择题

教练员分析运动员百米赛跑的全程录象带,测得运动员在第1s内的位移是8m,前7s跑了63m,跑到终点共用了10s,则                                     (    )

A.

B.运动员在第1s末的瞬时速度是8m/s

C.运动员在百米终点冲刺速度为10m/s

D.运动员在第7s内的平均速度是9m/s

答案

答案:A

根据题目提供的信息,只能计算某段时间内的平均速度。第一秒内的平均速度为8m/s,运动员在7s内的平均速度是9m/s,运动员在全程内的平均速度是10m/s。所以答案选A。

阅读理解

阅读短文,选择正确答案。

    Now the students of Class Three, Grade One are having an English lesson, Mr Zhang finds Li Lei doesn't

listen to him. He goes to Li Lei and has a look. Oh, Li Lei is drawing a boy.

    The teacher asks Li Lei to stand up. "Do you like drawing?" 

    "Yes, Mr Zhang," answers Li Lei, "And I draw very well." 

    "You can draw after class, I think," says the teacher. "You can't draw anything in class." 

    "You are wrong, Mr Zhang. I can draw when I am having an art class. And I like it very much," says Li Lei

with a smile. 

    "You are right," says the teacher. 

    "And you must draw one hundred boys before the class is over," says the teacher angrily.

    After five minutes, Li Lei finishes drawing and puts up his hand. The teacher looks at the picture and asks,

"I ask you to draw one hundred boys. But you draw only two boys. One is standing at the door and the other

one is standing in front of the window. Where are the others?" "There are ninety-eight boys in the room, you

know," says Li Lei.

1. Mr Zhang is ________ teacher and Li Lei is good at ________. [ ]

A. a Chinese, lessons

B. a math, drawing

C. an art, football

D. an English, drawing

2. The underlined sentence (划线句子) in the text means _________. [ ]

A. the boy can draw nothing

B. the boy can't draw in art class

C. the boy can't draw in an English class

D. the boy likes drawing after class

3. Li Lei draws two boys _________. [ ]

A. on the paper

B. on his desk

C. on the blackboard

D. on the wall

4. What do you think the teacher will do after class? [ ]

A. He will let the boy go home

B. He will ask the boy to go to his office

C. He will praise (表扬) Li Lei

D. He will ask Li Lei to dinner

5. From this story we know that Li Lei is a ________ boy. [ ]

A. good

B. clever

C. bad

D. kind

单项选择题 A1/A2型题