When the world was a simpler place, the rich were fat, the poor were thin, and right-thinking people worried about how to feed the hungry. Now, in much of the world, the rich are thin, the poor are fat, and right-thinking people are worrying about obesity.
Evolution is mostly to blame. It has designed mankind to cope with deprivation, not plenty. People are perfectly tuned to store energy in good years to see them through lean ones. But when bad times never come, they are stuck with that energy, stored around their expanding bellies.
Thanks to rising agricultural productivity, lean years are rarer all over the globe. Modernday Malthusians, who used to draw graphs proving that the world was shortly going to run out of food, have gone rather quiet lately. According to the UN, the number of people short of food fell from 920m in 1980 to 799m 20 years later, even though the world’s population increased by 1.6 billion over the period. This is mostly a cause for c
A. worried.
B. indifferent.
C. objective.
D. pessimistic.
| Modern industrial society grants little
status to old people. In fact, such a society has a system of built-in
obsolescence. There is no formal system for continuing our education throughout
our life in order to keep up with rapidly changing knowledge. When our education
and job skills have grown obsolete, we are treated exactly like those who have
never gained an education or job skills and are not encouraged or given the
opportunity to begin anew. As a society becomes more highly developed, the overall status of older people diminishes. Improved health technology creates a large pool of old people, who compete for jobs with the young. However, economic technology lowers the demand for workers and creates new jobs for which the skills of the aged are obsolete, forcing older people into retirement. At the same time, young people are being educated A. The Problem of Aging B. Social Structures C. Economic Technology D. Continuing Education [单选题]安全工器具应进行国家规定的( ) 和使用中的周期性试验。
A. 科技试验、出厂试验 B. 型式试验、出厂试验 C. 外观检验、出厂试验 D. 外观检验、型式试验 [判断题]自动站间闭塞设备在排列发车进路时能够自动办理闭塞手续。
A.正确 B.错误 [单项选择]大多数抗肿瘤药物其不良反应主要有
A. 低热 B. 黄疸 C. 少尿 D. 失眠、头痛 E. 骨髓抑制、胃肠道反应 [单选题]布线应远离发热器件。发热温度在100℃以内的器件,电线与之距离应保持在( )以上。( )
A.20mm B.30mm C.40mm [单选题]依据《中国南方电网有限责任公司电力安全工作规程》,当卸扣有裂纹、塑
性变形、螺纹滑牙、销轴和扣体断面磨损达原尺寸( )时不得使用。
A.1%~ B.1%~5% C.3%~5% D.2%~5% [单选题]按照护理工作内容进行分工，各司其职、互不干扰的护理工作方式属于
A.个案护理 B.综合护理 C.功能制护理 D.小组护理 E.责任制护理 [多项选择]对于没有单价和工程量的总价子目的计量，计量支付的形式一般有______。
A. 对于工期较短的项目，各个总价子目的价格按合同约定的计量周期平均 B. 对于合同价值不大的项目，按照总价子目的价格占签约合同价的百分比，以及各个支付周期内所完成的单价子目的总值，以固定百分比方式均摊支付 C. 对于合同价值不大的项目，按照总价子目的价格占签约合同价的百分比以及各个支付周期内所完成的单价子目的总值，以浮动百分比方式均摊支付 D. 实际支付时，由监理单位检查核实其实际形象进度，达到支付分解表的要求后，即可支付经批准的每阶段总价子目的支付金额 E. 根据有合同约束力的进度计划、预先确定的里程碑形象进度节点(或者支付周期)、组成总价子目的价格分解到各个形象进度节点(或者支付周期中)，汇总形成支付分解表 [单选题] 心肺复苏过程中要进行调整体位,其关键点是:
A.脸要向上 B.身体要放平 C.头肩躯干要同时转动 我来回答: 提交
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