对某种特定商品有兴趣的消费者的集合是( )。A．服务市场 B．合格有效市场 C．有

艺术创新的过程（），融合，出新的过程。

18岁女孩，身高1.64米。一年前患者因自己体形较胖（60kg）而被同学笑话，于是开始节食，并运动减肥。但有时又觉得很饿，忍不住会吃很多，事后又怕胖，就自己诱吐。经过半年的节食，患者体重减至45kg，但患者仍认为自己胖，继续节食。3个月前患者出现闭经，身体无力，极少进食。至入院前减至38kg，被家人带来入院。既往健康，无阳性家族史。体格检查：体温36.2℃，脉搏76次／分，呼吸18次／分，血压85／50mmHg，消瘦，营养差。心肺无异常，神经系统检查未见异常。精神检查：神清语利，接触被动，问话回答，但有气无力，情绪偏抑郁，主动意志减退。

针对病人目前情况，下一步处理可以考虑哪些选择（）

A.强迫进食

B.纠正电解质紊乱

C.认知治疗

D.行为治疗

E.氟西汀

F.家庭治疗

G.生物反馈疗法

H.高热量饮食

提示血容量不足（）

A.中心静脉压很低，尿量多

B.中心静脉压偏低，尿量少

C.中心静脉压偏低，尿量多

D.中心静脉压偏高，尿量多

E.中心静脉压很高，尿量少

阅读理解。

     Why do men live a shorter life than women? The latest research indicates that men's hearts going into a

rapid decline when they reach middle age could be the cause.

     The research of ageing on the heart has shown that women's longevity may be linked to the fact that their

hearts do not lose much pumping power with age.

     "We have found that the power of the male heart falls by 20-25 percent between 20 and 70 years of age,"

said the head of the study, Samantha of Liverpool John Moores University in the UK.

     "Within the heart there are millions of cells which make it beat. Between the ages of 20 and 70, one-third

of those cells die and are not replaced in men," said Samantha. "This is part of the ageing process."

     What amazes scientists is that the female heart suffers very little loss of these cells. A healthy 70-year-old

woman's heart could work almost as perfectly as a 20-year-old one's.

     "This gender (性别) difference might give the reason why men live shorter than women," said Samantha.

They studied over 250 healthy men and women between the ages of 17 and 80, who are mainly healthy persons

so as to reduce the influence of disease. "The team has yet to think about why ageing suffers a greater loss on

the male heart," said Samantha.

     But there is also good news-men can enjoy the health of their hearts with regular exercise. Samantha

stressed that women should also take regular exercise to stop their leg muscles getting weaker as they age.

1. The underlined word "longevity" in the second paragraph means "_____".

A. health

B. long life

C. aging

D. effect

2. The text mainly talks about _____.

A. men's heart cells

B. women's ageing process

C. the gender difference

D. hearts and long life

3. According to the text, the UK scientists have known that _____.

A. men have fewer cells than women when they are bon

B. women can produce the cells that make the heart beat C. the female heart suffers less loss of the cells

    with age

D. women will never suffer the loss of pumping power with age

4. If you want to live a long life, you should _____.

A. enable your heart to beat much faster

B. think about the reason for ageing

C. take regular exercise to keep your heart healthy

D. stop your cells from being lost

汽车零部件或总成的平均维护时间等于维护该机件时总的维护工时（）维护次数。

A.乘以

B.除以

C.加上

D.减去