问题 单项选择题

下述有关阑尾假粘液瘤的说法中哪一项是错误的

A.阑尾假粘液瘤为真性肿瘤,可种植腹腔

B.假粘液瘤可转移到肝脏

C.切除阑尾假粘液瘤时,最主要的是要完整切除

D.广泛腹膜假粘液瘤应尽量切除,减小肿瘤体积

E.腹腔化疗对假粘液瘤疗效不确切

答案

参考答案:B

解析:[解题思路] 假粘液瘤有恶性倾向,主要是腹膜广泛种植,但不转移到淋巴结或肝,手术治疗的目的是减少肿瘤的体积,化疗及放疗效果不确定。预防措施是切除阑尾假粘液瘤时尽量避免破裂。

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Passage Three


Being sociable looks like a good way to" add years to your life. Relationships with family, friends, neighbours ,even pets ,will all do the trick ,but the biggest longevity(长寿) boost seems to come from marriage or an equivalent relationship. The effect was first noted in 1858 by William Farr,who wrote that widows and widowers were at a much higher risk of dying than their married peers. Studies since then suggest that marriage could add as much as seven years to a man’s life and two to a woman’s. The effect holds for all causes of death, whether illness, accident or self-harm.
Even if the odds are stacked against you, marriage can more than compensate. Linda Waite of the University of Chicago has found that a married older man with heart disease can expect to live nearly four years longer than an unmarried man with a healthy heart. Likewise, a married man who smokes more than a pack a day is likely to live as long as a divorced man who doesn’t smoke. There’s a flip side, however, as partners are more likely to become ill or die in the couple of years following their spouse’s death, and caring for a spouse with mental disorder can leave you with some of the same severe problems. Even so, the odds favour marriage. In a 30-year study of more than 10,000 people, Nicholas Christakis of Harvard Medical School describes how all kinds of social networks have similar effects.
So how does it work The effects are complex, affected by socio-economic factors, health-service provision,emotional support and other more physiological (生理的)mechanisms. For example, social contact can boost development of the brain and immune system, leading to better health and less chance of depression later in life. People in supportive relationships may handle stress better. Then there are the psychological benefits of a supportive partner.
A life partner,children and good friends are all recommended if you aim to live to 100. The ultimate social network is still being mapped out, but Christakis says:" People are interconnected, so their health is interconnected. \

What does the author say about social networks

A.They have effects similar to those of a marriage.

B.They help develop people’s community spirit.

C.They provide timely support for those in need.

D.They help relieve people of their life’s burdens.