计算机辅助设计的简称是______。A．CAI B．CAT C．CAM D．CAD

石灰的硬化只能在空气中进行，且硬化缓慢，硬化后的强度也不高，受潮后石灰溶解，强度更低，在水中还会扩散，所以，石灰不宜在潮湿的环境下使用，也不宜( )。

A．用于建筑物的基础

B．单独用于建筑物的基础

C．储存和运输生石灰时还要注意安全

D．石灰膏还可稀释成石灰乳

下述哪项不是扩张型心肌病超声表现（）

A.心腔明显扩大

B.收缩功能减退

C.舒张功能正常

D.室壁运动普遍减低

E.室壁收缩期增厚率减低

简答教师的劳动特点。

阅读理解。

     I live in the land of Disney, Hollywood and year-round sun. You may think people in such a splendid,

fun-filled place are happier than others. If so, you have some mistaken ideas about the nature of happiness.

Many intelligent people still equate happiness with fun. The truth is that fun and happiness have little or

nothing in common. Fun is what we experience during an act. Happiness is what we experience after an

act. It is a deeper, more lasting emotion.

    Going to an amusement park or ball game, watching a movie or television, are fun activities that help us

relax, temporarily forget our problems and maybe even laugh. But they do not bring happiness, because

their positive effects end when the fun ends.

    I have often thought that if Hollywood stars have a role to play, it is to teach us that happiness has

nothing to do with fun. These rich, beautiful individuals have constant access to glamorous parties, fancy

cars, expensive homes, everything that spells"happiness". But in memoir(回忆录)after memoir, they

reveal the unhappiness hidden beneath all their fun: depression, alcoholism ,drug addiction, broken

marriages, troubled children and profound loneliness.

    Ask a bachelor why he resists marriage, if he's honest, and he will tell you that he is afraid of making a

commitment, for commitment is in fact quite painful. The single life is filled with fun, adventure and

excitement. Marriage has such moments, but they are not its most distinguishing features.

    Similarly, couples that choose not to have children are deciding in favor of painless fun over painful

happiness. They can dine out whenever they want and sleep as late as they can. Couples with infant

children are lucky to get a whole night's sleep or a three-day vacation. I don't know any parent who

would choose the word fun to describe raising children.

    Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating(解放性的)realizations. It liberates time: now we can devote more hours to activities that can genuinely

increase our happiness. It liberates money: buying that new car or those fancy clothes that will do nothing

to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all

those rich and glamorous people we were so sure are happy because they are always having so much fun

actually may not be happy at all.

1. We can learn from the passage that ________.

A. fun creates long-lasting satisfaction

B. fun provides enjoyment while pain leads to happiness

C. happiness is lasting whereas fun is short-lived

D. fun that is long-standing may lead to happiness

2. To the author, the role Hollywood stars play is to ________.  

A. write memoir after memoir about their happiness

B. tell the public that happiness has nothing to do with fun

C. teach people how to enjoy their lives

D. bring happiness to the public instead of going to parties

3. In the author's opinion, marriage ________ .

A. affords greater fun    

B. leads to raising children

C. indicates duty and devotion    

D. usually ends up in pain

4.Which of the following is the best example of"painful happiness"?

A. Winning lottery by accident    

B. A bachelor resisting marriage

C. Raising children        

D. Buying some fancy clothes

5. If one gets the true sense of happiness, he will ________.

A. stop playing games and joking with others    

B. keep himself with his family

C. give a free hand to money        

D. use his time to increase happiness

远志常采用的炮制方法是（）

A.水煮

B.甘草水煮

C.酒蒸

D.豆腐煮

E.姜汤煮