原发性肝癌在我国消化系统肿瘤中居()。A.第一位 B.第二位 C.第三位 D.第四位

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问题:

原发性肝癌在我国消化系统肿瘤中居()。

A.第一位

B.第二位

C.第三位

D.第四位

E.第五位

考点:广西临床住院医师规范化培训病理生物学病理生物学题库
题型:单项选择题

杠杆静止不动时的状态叫做杠杆的_______        。在做“研究杠杆平衡条件”实验时,把杠杆挂在支架上以后,首先要调节_____         使杠杆处在_____           位置并保持平衡。

题型:单项选择题

对于一个分布不明的资料。或是分布一端或两端出现不确定值。用于描述其集中趋势是()。

A.均数

B.几何均数

C.中位数

D.标准差

E.四分位数间距

题型:单项选择题

内层无釉柱釉质的成因可能是

A.成釉细胞尚未形成

B.Tomesprocesses退变所致

C.成釉细胞分泌障碍

D.晶体长轴的改变

E.Tomesprocesses尚未形成

题型:单项选择题

If you smoke, you’d better hurry. From July 1st pubs all over England will, by law, be no-smoking areas. So will restaurants, offices and even company cars, if more than one per-son uses them. England’s smokers are following a well-trodden path. The other three bits of the United Kingdom have already banned smoking in almost all enclosed public spaces, and there are anti-smoking laws of varying strictness over most of Western Europe. The smoker’ s journey from glamour through toleration to suspicion is finally reaching its end in pariah status.

But behind this public-health success story lies a darker tale. Poorer people are much more likely to smoke than richer ones—a change from the 1950s, when professionals and la-borers were equally keen. Today only 15% of men in the highest professional classes smoke, but 42% of unskilled workers do. Despite punitive taxation—20 cigarettes cost around £ 5.00 ($10.00), three-quarters of which is tax—55% of single mothers on benefits smoke. The figure for homeless men is even higher; for hard-drug users it is practically 100% . The message that smoking kills has been heard, it seems, but not by all.

Having defeated the big killers of the past—want, exposure, poor sanitation—governments all over the developed world are turning their attention to diseases that stem mostly from how individuals choose to live their lives. But the same deafness afflicts the same people when they are ply encouraged to give up other sorts of unhealthy behavior. The lower down they are on practically any pecking order—job prestige, income, education, background-the more likely people are to be fat and unfit, and to drink too much.

That tempts governments to shout ever louder in an attempt to get the public to listen and nowhere do they do so more aggressively than in Britain. One reason is that pecking orders matter more than in most other rich countries: income distribution is very unequal and the unemployed, disaffected, ill-educated rump is comparatively large. Another reason is the frustration of a government addicted to targets, which often aim not only to improve some-thing but to lessen inequality in the process. A third is that the National Health Service is free to patients, and paying for those who have arguably brought their ill-health on themselves grows alarmingly costly.

Britain’ s aggressiveness, however, may be pointless, even counter-productive. There is no reason to believe that those who ignore measured voices will listen to shouting. It irritates the majority who are already behaving responsibly, and it may also undermine all government pronouncements on health by convincing people that they have an ultra-cautious margin of error built in.

Such hectoring may also be missing the root cause of the problem. According to Mr. Marmot, who cites research on groups as diverse as baboons in captivity, British civil servants and Oscar nominees, the higher rates of ill health among those in more modest walks of life can be attributed to what he calls the "status syndrome". People in privileged positions think they are worth the effort of behaving healthily, and find the will-power to do so. The implication is that it is easier to improve a person’s health by weakening the connection between social position and health than by targeting behavior directly. Some public-health experts speak of social cohesion, support for families and better education for all. These are bigger undertakings than a bossy campaign; but more effective, and quieter.

The author seems to believe that status syndrome may be cured()

A. if the measures can actually weaken the relationship between social position and health

B. if the government shouts louder in their campaign against diseases resulting from unhealthy habits

C. if the government helps people find a per will power to give up their unhealthy habits

D. if the government undertakes bigger and more effective ad campaigns against poor education

题型:单项选择题

选用润滑油的一般原则是转速越高,选用润滑油粘度越大。()

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