问题 选择题

对于公式ρ=

m
v
的物理意义,下列叙述中正确的是(  )

A.物质的密度与其质量成正比,质量越大,密度越大

B.物质的密度与其体积成反比,体积越小,密度越小

C.同种物质组成的物体,其密度是确定的,与其质量多少或体积大小无关

D.以上说法都不对

答案

对于同一种物质,在确定的温度和状态下,密度是不变的,

即物质的密度大小与质量和体积无关,不能理解为物质的密度与质量成正比,与体积成反比,

所以选项A、B、D错误,选项C正确.

故选C.

完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(答案涂在答题卡上E="AB" F="AC" G=AD)

No.1 Will the economic climate improve this year?

I don't think we will see too much improvement this year, but of course I hope so.

No.2 How important is an MBA compared to experience?

I won't say a degree isn't important.一____1 ____.When I look at potential employees, I look atwhat they have done in the past that I can use to help me tomorrow.

No.3 How can you ensure your job is safe with the economy so shaky?

No job is safe.Never will it be.The half-life of any particular skill set is, at most, fiveyears.And that's on the long side.  2__Be curious, be willing to learn, have a moralcompass and know what gives your life meaning.

No.4 When the job market is this bad, how can you distinguish yourself as a andidate?

Know the company, its competitive position, recent announcements, stock-price history.Do a Google or Yahoo search on the person you'll be meeting with and you should be able tofind something about him or her.Then develop an "outsider's view" of their key needs andopportunities.  3___

No.5 I'm graduating from business school this spring.  4___

If you haven't already secured an internship(职业院校证)within your chosen field, do sonow.Take any internship; forget about being paid.  5___ the experience in your field andthe opportunity to check out onto a possible employee.Your connections, and yourconnectionsconnections, will be the hot ticket to get you in the door for job interviews.

A.You are after two things.

B.Do all you can to be the solution to someone else's problem.

C.Will technology create more jobs?

D.Any job advice?

E.But nothing beats experience.

F.What will keep you alive?

G.Differentjobs needs different skills.

单项选择题