试题与答案

如果扩大时间范围,可以看到中国第二产业劳动力需求一直在增高,而第三产业劳动力需求在下

题型:多项选择题

题目:

如果扩大时间范围,可以看到中国第二产业劳动力需求一直在增高,而第三产业劳动力需求在下降。从而可知:()

A、大学生就业难

B、中国是制造业大国

C、中国人的服务意识弱

D、中国进入工业化时代

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

American people like to say “Thank you” when others help them or say something kind to them. People of many countries do so, too. It is a very good habit. You should say “Thank you” when someone passes you the salt on the table, when someone walking ahead of you keeps the door open for you, when someone says you have done your work well, or you have bought a nice thing, or your city is very beautiful. “Thank you” is used not only between friends, but also between parents and children, brothers and sisters. “Excuse me” is another short sentence they use. When you hear someone say so behind you, you know that somebody wants to walk past you without touching you. It’s not polite to break others when they are talking. If you want to speak to one of them, say “Excuse me” first, and then begin talking. You should also do so when you begin to cough or make any noise before others. Let’s learn to say “Thank you” and “Excuse me”.

小题1:You should say “Thank you” when ______________.

A.you say something kind to others

B.you help others

C.someone helps you

D.you need others to help you小题2:From the passage we know “Thank you” is _________.

A.widely used in the world

B.used more often than “Excuse me”

C.used only by American

D.used only between friends小题3:You should say “Excuse me” if you want to __________.

A.cough

B.make some noise

C.go first

D.all of the above小题4:When you are going to ask someone to tell you the way, you should say “_________”

A.Thank you

B.That’s very kind of you

C.Excuse me

D.I’m sorry小题5:This passage mainly tells us the way _________.

A.to be happy

B.to be polite

C.to help others

D.to learn from Americans

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题型:计算题

小海在学习了浮力知识之后,设计一个观察鸡蛋悬浮的实验。他先在水平桌面上放置一个底面积为100cm2的圆筒形容器(厚度可忽略),向容器中注入10cm深的水,再取一个鸡蛋,称得其质量为55g,将它轻轻放入水中,发现鸡蛋沉至容器底部,此时测得水面升高了5mm;然后向容器中加食盐并不停搅动,知道鸡蛋恰好悬浮起来为止。请计算:

(1)容器中未放入鸡蛋时,水对容器底部的压强是多大?

(2)当鸡蛋悬浮时,盐水的密度是多少?

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