问题 单项选择题

短跑运动员在100m赛跑中,测得5s末的速度为9m/s,10s末到达终点的速度为10.2m/s,则运动员在全程中的平均速度为()

A.9m/s

B.9.6m/s

C.10m/s

D.10.2m/s

答案

参考答案:C

解析:

运动员在全程中的平均速度是全程的位移除以跑完全程所用的时间,得到C对,ABD错

阅读理解

Sunshine For All

The Beijing Sunshine Secondary School students are holding a charity show at the school hall of Beijing Sunshine Secondary School, Sunny Street, Sunshine Town.

Date: 29 April

Time: 7:30 p. m.一9:00 p. m.

We hope to raise money to help poor children go to school.

Ticket price:  $20

Donations are welcome.

Programme:

7:30 p. m. Introduction

7:40 p. m. Songs

8:00 p. m. Break

8:15 p. m. Speech

8:30 p. m. Drama

9:00 p. m. End of the show

Project Hope is an organization that raises money to build schools and buy books for poor students.

We would like to thank the following for their help and support:

The teachers at Beijing Sunshine Secondary School

The Star Shopping Mall for the costumes

Sunshine Advertisement Company for the posters

小题1:Where will the charity show be held?

A.In the classroom.

B.In the meeting room.

C.In the shopping mall.

D.At the school hall.小题2:When will the charity show be held?

A.7:30 p. m.一9:00 p. m., 29 April.

B.7:30 a. m.一9: 00 a. m., 29 April.

C.7:30 a. m.一9: 00 p. m. 29 May.

D.7:30 p. m.一9: 00 p. m. 29 May.小题3:Why do they want to raise money?

A.To build schools.

B.To help poor children go to school.

C.To buy books for poor students.

D.To hold the charity show小题4:What can you do at 8:00 p. m.?

A.Watch a drama.

B.Enjoy songs.

C.Have a rest.

D.Listen to a speech.小题5:Whom do the students want to thank?

A.Sunshine Advertisement Company for the posters.

B.The Star Shopping Mall for the costumes.

C.The teacher at Beijing Sunshine Secondary School.

D.All of the above.

单项选择题