问题 选择题

小李讲了一个龟兔赛跑的故事:龟、免从同一地点出发,发令枪响后龟缓慢地向终点跑去,直至到达终点,兔自恃跑得快,让龟跑了一段时间后才开始跑,当它超过龟后便在路旁睡起觉来,醒来一看,龟已接近终点了,于是便奋力追去,但最终还是让龟先到达了终点,据此,我们可以将龟兔赛跑的运动过程用x-t图象来表示,在下图中正确的是(  )

A.

B.

C.

D.

答案

根据题目的叙述,龟的位移从零开始,并一直是匀速直线运动,兔子先是静止的,所以首先的一段是水平的直线,然后是匀速直线运动,并且速度的要比龟的快,从图象来看就是斜率要比龟的大,追上龟之后,兔子又在路旁睡觉,所以图象还是水平的直线,最后再去追龟,但是没追上,所以最后龟的位移要比兔子的大.

故选:C.

阅读理解

‘Student Voice’ is a student-run education conference discussing education in the 21st century. This event aims to gather the views and opinions of students not only in Victoria and Australia, but around the globe. On Sunday 29 July 2012 students will discuss a series of questions regarding the role of education in the 21st century. By the end of the day they will hopefully have comprehensive answers to be shared with schools around the state and maybe even the world.

Students from Preshill would like to invite a group of 5-10 students from your school to participate in this free forum(讨论). The event is being held on Sunday 29 July 2012 from 10am-2.30pm at the Hawthorn Town Hall, 360 Burwood Rd, Hawthorn. They are inviting students who are enthusiastic on any of our topics of discussion to present a keynote speech on the day.

If you can’t make the day, they welcome your written or recorded thoughts on our questions, which will be on display at the event.

The topics for discussion:

Key Question: What is the ideal 21st century education?

1. Is it a school’s place to teach ethics, values, morals, confidence, self-esteem?

2. What are the effects of a uniform national curriculum(课程)?

3. How can we make education more engaging?

4. Should students be compared and ranked against each other?

5. What is the place of social networking and new media technology in education?

6. What is the best way to determine student knowledge?

Visit their Facebook page (see below) for updates, to communicate with organizers and other participants, and to indicate your interest in making a keynote speech.

The Student Voice Organizing Committee Facebook Page URL:

http://www.facebook.com/pages/Student-Voice-The-Student-Education-Conference/101834233239391?sk=info

小题1:What is the aim of the Student Voice Conference?

A.To gather students' ideas about education and share these ideas with schools.

B.To discuss the ideal 21st century education with students.

C.To invite some students to participate in a free forum about education.

D.To create a chance for students to communicate with each other.小题2:Who can participate in the Student Voice conference?

A.Anyone working on education.

B.Students only from Australia and Victoria.

C.Students who are free on Sunday 29 July 2012.

D.Any student interested in education in the 21st century.小题3:Which of the following topics will be discussed in Student Voice conference?

A.How to carry out the ban on drunk driving.

B.The development of international economics

C.The effects of a uniform national curriculum.

D.Advantages of shopping on line.小题4:How can you communicate with the organizers ?

A.By telephone

B.By writing letters

C.By visiting their Facebook Page

D.By email

单项选择题 B1型题