获得国家自然科学、发明、科学技术进步三等奖，可以记三等功。

二尖瓣狭窄最重要的体征是（）

A.二尖瓣面容

B.开瓣音

C.心尖区第一心音亢进

D.肺动脉瓣区第二心音亢进

E.心尖部舒张期隆隆样杂音

The way people hold to the belief that a fun-filled，pain-free life equals happiness actually reduces their chances of ever attaining real happiness．If fun and pleasure are equal to happiness then pain must be equal to unhappiness．But in fact，the opposite is true：more often than not things that lead to happiness involve some pain．

As a result，many people avoid the very attempts that are the source of true happiness．They fear the pain inevitably brought by such things as marriage， raising children， professional achievement，religious commitment，self improvement．

Ask a bachelor （单身汉）why he resists marriage even though he finds dating to be less and less satisfying．If he is honest 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，excitement．Marriage has such moments，but they are not its most distinguishing features．

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．But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild．

Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating 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 who are always having so much fun actually may not be happy at all．

小题1:According to the author，a bachelor resists marriage chiefly because          ．

A．he finds more fun in dating than in marriage

B．he believes that life will be more cheerful if he remains single

C．he is reluctant to take on family responsibilities

D．he fears it will put an end to all his fun adventure and excitement小题2:Raising children，in the author’s opinion，is           ．

A．a moral duty

B．a thankless job

C．a source of inevitable pain

D．a rewarding task小题3:From the last paragraph，we learn that envy sometimes stems from       ．

A．hatred

B．misunderstanding

C．prejudice

D．ignorance小题4:To understand what true happiness is one must        ．

A．be able to distinguish happiness from fun

B．make every effort to liberate oneself from pain

C．put up with pain under all circumstances

D．have as much run as possible during one’s lifetime小题5:What is the author trying to tell us?

A．It is important to make commitments．

B．One must know how to attain happiness．

C．Happiness often goes hand in hand with pain

D．It is pain that leads to happiness．

城镇土地使用税和耕地占用税有何不同？

问：城镇土地使用税和耕地占用税有何不同？已缴纳耕地占用税的，是否还需要缴纳城镇土地使用税？

提高企业利润有什么好办法？（）

A.增加可以获利的产品品种

B.降低成本

C.提高产品价格

D.裁员

拓展训练之所以受到追捧，是因为它可以协助企业为有效地达成重组核心资源的目标而设计训练课程，帮助企业员工（）。

A.克服困难，完成训练

B.克服惰性，磨练意志

C.战胜艰险，提炼品质

D.战胜自己，提升个性