问题 选择题

如图所示,某人从高出水平地面h的坡上水平击出一个质量为m的高尔夫球,由于恒定的水平风力的作用,高尔夫球竖直地落入距击球点水平距离为L的A穴,重力加速度取g,则

A.该球做平抛运动

B.该球从被击出到落入A穴所用时间为

C.球被击出时的初速度大小为L

D.球从击球点至落地点的位移等于L

答案

答案:B

由于恒定的水平风力的作用,物体的运动不是平抛运动,A错误;根据运动合成与分解的独立性,水平方向的风力不影响竖直方向的下落时间,则球从被击出到落入A穴所用时间为,B正确;水平方向做匀减速运动,有,球被击出时的初速度大小为2L,C错误;位移为起点到终点的有向线段,不是水平距离,D错误。

问答题
阅读理解

Collecting information about pre-employment and filling out an application form are closely connected, However, filling out an application form is much easier because you have total control and have enough time to think and plan.

  That you are given a form to fill out does not necessarily mean that you have to answer all the questions in it. If the form contains unclear questions or terms and conditions, you can make some changes before signing(签约)it, or refuse to answer some of the questions. What you must realize is that those terms and conditions have been written by highly paid lawyers. Each word is important, or it would not be there; and you can be sure that there is not anything there that is written with your interests in mind.

  I know what I speak of because, as a lawyer for Litton Industries. I wrote the terms and conditions that were printed on the back of order forms, I wrote the most tiring terms and conditions anyone has ever seen. Still, 90 percent of the buyers would just sign on them without questioning anything. If anyone questioned them, we would reach an agreement on something that was acceptable to both sides.

  So when you see a preprinted application that contains questions or terms and conditions, read it all and read it slowly. If you don’t like something, you can simply change the parts you don’t like, Remember that everything can be settled by discussion. To what degree it can be settled depends on your position, of course, and that is something only you can determine.

小题1:Filling out application forms is much “easier” because_______.

A.everything connected with application forms is easier

B.you can control the form filling with enough time

C.you can plan and have control of the needed time

D.it is easier to collect information about pre-employment小题2:We can learn from the underlined part “Each word is important” that _______.

A.questions in a form must be answered

B.everything in a form must be read carefully

C.the conditions that interest you are changeable

D.something of your interests is most important小题3:It can be inferred from the 4th paragraph that_______.

A.you must change a preprinted application before it is discussed

B.questions in a form are more important

C.you have little right to determine the conditions you like most

D.it depends on yourself to settle things in a form