下列事象与地面辐射强弱相关性最小的是 A.大气逆辐射 B.下垫面性质 C.岩浆活

题型:选择题

问题:

下列事象与地面辐射强弱相关性最小的是

A.大气逆辐射

B.下垫面性质

C.岩浆活动

D.太阳辐射

考点:大气的受热过程
题型:选择题

下列哪些病证属于《素问·至真要大论》中有关“热”的病机()

A.诸转反戾

B.诸病有声,鼓之如鼓

C.诸躁狂越

D.诸胀腹大

E.诸湿肿满

题型:选择题

It is said that in England death is pressing, in Canada inevitable and in California optional. Small wonder. Americans’ life expectancy has nearly doubled over the past century. Failing hips can be replaced, clinical depression controlled, cataracts removed in a 30-minute surgical procedure. Such advances offer the aging population a quality of life that was unimaginable when I entered medicine 50 years ago. But not even a great health-care system can cure death—and our failure to confront that reality now threatens this greatness of ours.

Death is normal; we are genetically programmed to disintegrate and perish, even under ideal conditions. We all understand that at some level, yet as medical consumers we treat death as a problem to be solved. Shielded by third-party payers from the cost of our care we demand everything that can possibly be done for us, even if it’s useless. The most obvious example is latestage cancer care. Physicians—frustrated by their inability to cure the disease and fearing loss of hope in the patient—too often offer aggressive treatment far beyond what is scientifically justified.

In 1950, the U. S. spent $12.7 billion on health care. In 2002, the cost will be $1,540 billion. Anyone can see this trend is unsustainable. Yet few seem willing to try to reverse it. Some scholars conclude that a government with finite resources should simply stop paying for medical care that sustains life beyond a certain age—say 83 or so. Former Colorado governor Richard Lamm has been quoted as saying that the old and infirm "have a duty to die and get out of the way" so that younger, healthier people can realize their potential.

I would not go that far. Energetic people now routinely work through their 60s and beyond, and remain dazzlingly productive. At 78 Viacom chairman Sumner Redstone jokingly claims to be 53. Supreme Court Justice Sandra Day O’Connor is in her 70s, and former surgeon general C. Everett Koop chairs an Internet start-up in his 80s. These leaders are living proof that prevention works and that we can manage the health problems that come naturally with age. As a mere 68-year-old, I wish to age as productively as they have.

Yet there are limits to what a society can spend in this pursuit. As a physician, I know the most costly and dramatic measures may be ineffective and painful. I also know that people in Japan and Sweden, countries that spend far less on medical care, have achieved longer, healthier lives than we have. As a nation we may be overfunding the quest for unlikely cures while underfunding research on humbler therapies that could improve people’s lives.

The author’s attitude toward Richard Lamm’s remark is one of ().

A. p disapproval

B. reserved consent

C. slight contempt

D. enthusiastic support

题型:选择题

外吹乳痈好发于下列哪个时期的妇女( )

A.以上都不是
B.妊娠期妇女
C.产后3~4个月哺乳期妇女
D.产后3~4周哺乳期妇女
E.非妊娠期、哺乳期妇女

题型:选择题

金融国际化

题型:选择题

全波整流电路,输出电流较小时,输出电压();输出电流较大时,输出电压()。

A.较大;较大

B.较小;较小

C.较大;较小

D.较小;较大

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