问题 填空题

热机是将内能转化为________能的机器,它的发明带来了人类历史上的第一次工业革命。当今人们生活中不可或缺的机器大多是利用电力驱动的,这就是________机,请写出一件内部含有此部件的家用电器:_______________ 。

答案

机械;电动;电风扇等

单项选择题
阅读理解

阅读理解

根据短文内容,从短文后的选项中选出能填人空白处的最佳选项.选项中有两项为多途选项.

     When we think about happiness,we usually think of something extraordinary,a pinnacle(顶点)of delight.  And those pinnacles seem to get rarer the older we get.

        1    I remember playing policemen and robbers in the woods,getting a speaking part in the school

play.  Of course,kids also experience lows,but their delight at such peaks of pleasure as winning a race

or getting a new bike is unreserved.

    For teenagers,or people under 20 the concept of happiness changes.   2   I can

still feel the pain of not being invited to a party that almost everyone else was going to. I also remember

the great happiness of being invited at another event to dance with a very handsome young man.

   In adulthood the things that bring great joy-birth,love,marriage also bring

responsibility and the risk of loss.      3   For adults,happiness is complex.

       4   But I think a better explanation of happiness is"the ability to enjoy something".  The more we can

enjoy what we have,the happier we are.  It's easy to overlook the pleasure we get from loving and being

loved,the company of friends,the freedom to live where we please,even good health.

    While happiness may be more complex for us,the solution is the same as ever.

Happiness isn't about what happens to us;it's the ability to find a positive for every

negative,and view a difficulty as a challenge.   5   

A. Love may not last;loved ones die.

B. For a child,happiness has a magic quality.

C. Happiness is the meaning and the purpose of life.

D. Being happy doesn't mean that everything is perfect.

E. The dictionary explains "happy" as "lucky" or "fortunate".

F. It's not wishing for what we don't have,but enjoying what we do possess.

G. Suddenly it's conditional on such things as excitement,love,and popularity.