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问题 选择题

对于一个正在做匀速直线运动的物体，关于v=

s
t
，下列说法正确的是（　　）

A．物体通过的路程越长，物体的速度就越大

B．物体运动所用的时间越长，物体的速度就越小

C．该物体的速度与路程成正比，与时间成反比

D．该物体的速度不随路程和时间的改变而改变

答案

做匀速直线运动的物体的速度是一个定值，它的大小与物体通过的路程及物体运动时间的长短无关，故ABC错误，D正确．

故选D．

计算题

面积为5.0×10-2m2的单匝矩形线圈放在磁感强度为2.0×10-2T的匀强磁场中，若线圈平面与磁场方向垂直，求穿过线圈的磁通量多大？
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阅读理解

小题1:If Mr. Black has a desire to be a sports teacher, he should contact_______.

A．Airport Terminal Services

B．www. workatats. com

C．865-524-9881

D．tlgknoxvilletn@thelittlegym. com小题2:As a driver in Local Delivery, John has to _________.

A．work hard to earn good money.

B．have printing skills

C．have interest in the position

D．be offered paid training小题3:Mr. Smith can find a job as a mechanic at _______.

A．Washington DC Locations

B．Baltimore location

C．a fast paced company

D．Dillard小题4:What is a must when one hopes to be a member of Dillard’s team?

A．He must be able to work in the evening and on weekends.

B．He must have experience.

C．He must have a good knowledge of shoe fashion and sales.

D．He must like top brands of shoes.
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