帕金森病患者常见步态为慌张步态。

实验中下列玻片标本的制作使用正确的是（　　）

A．制作临时装片观察人体口腔上皮细胞

B．制作永久切片观察洋葱根尖细胞分裂

C．制作永久涂片观察大肠杆菌的形态

D．制作临时切片观察白菜叶肉细胞

徒手抗阻训练中不正确的注意事项描述是

A．训练中不应憋气，以防发生心血管问题；对有心血管问题的高危患者尤要加强预防措施

B．患者若发生局部的不适、疼痛、痉挛等局部肌肉疲劳现象和全身不适等全身疲劳现象时应及时报告，以减少训练所致的肌肉疼痛

C．对一些特殊的神经肌肉失能疾病和心肺失能疾病要特别注意运动量

D．训练中不需3～4分钟的休息恢复期

E．注意避免过度工作或过度训练现象

下列第三者财产损失商业三者险不负责赔偿的是（）

A.因市场价格变动造成的贬值

B.因无法修理而导致全损损失

C.修理后因价值降低造成的损失

D.因修理配件需到国外采购造成的运输费

流动资产中，( )是指企业在日常生产经营过程中持有以备出售.或者仍然处在生产过程，或者在生产或提供劳务过程中将消耗的材料或物料等。

A．待摊费用
B．存货
C．短期投资
D．应收及预付款

There was one thought that air pollution affected only the area immediately around large cities with factories and heavy automobile traffic. At present, we realize that although these are the areas with the worst air pollution, the problem is literally worldwide. On several occasions over the past decade, a heavy cloud of air pollution has covered the east of the United States and brought health warnings in rural areas away from any major concentration of manufacturing and automobile traffic. In fact, the very climate of the entire earth may be infected by air pollution. Some scientists consider that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels (coal and oil ) is creating a "greenhouse effect"— conserving heat reflected from the earth and raising the world’s average temperature, If this view is correct and the world’s temperature is raised only a few degrees, much of the polar ice cap will melt and cities such as New York, Boston, Miami, and New Orleans will be in water.

Another view, less widely held, is that increasing particular matter in the atmosphere is blocking sunlight and lowering the earth’s temperature—a result that would be equally disastrous, A drop of just a few degrees could create something close to a new ice age, and would make agriculture difficult or impossible in many of our top farming areas. Today we do not know for sure that either of these conditions will happen (though one recent government report drafted by experts in the field concluded that the greenhouse effect is very possible). Perhaps, if we are lucky enough, the two tendencies will offset each other and the world’s temperature will stay about the same as it is now. Driven by economic profits, people neglect. the damage on our environment caused by the "advanced civilization". Maybe the air pollution is the price the human beings have to pay for their development. But is it really worthwhile

It can be concluded that （）

A. raising the world’s temperature only a few degrees would not do much harm to life on earth.

B. lowering the world’s temperature merely a few degrees would lead major fanning areas to disaster.

C. almost no temperature variations have occurred over the past decade.

D. the world’s temperature will remain constant in the years to come.