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问题 选择题

下图为“云南路南石林不同植被下土壤空气中CO2浓度示意图”，读图完成10~11题。

小题1:如果水分条件相同，那么图中哪种植被下的土壤、岩石最易被溶蚀： （   ）

A．无植被耕地

B．人工草坡

C．柏树林

D．天然草坡小题2:如果当地植被破坏严重，最终产生的环境问题是： （   ）

A．沙化

B．泥石流

C．石漠化

D．滑坡

答案

小题1:B

小题2:C

小题1:本题考查地理图表的判读能力。根据图示：图中人工草被土壤中的二氧化碳含量最高，如果水分条件相同，则二氧化碳浓度高，酸性强，岩石容易被溶蚀。所以本题选择B选项。

小题2:西南地区植被一旦被破坏，则水土流失严重，山体岩石裸露，形成石漠化。所以本题选择C选项。

单项选择题

下肢的浅静脉有

A．胫前静脉
B．胫后静脉
C．贵要静脉
D．大隐静脉
E．腘静脉
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单项选择题

Of all the areas of learning the most important is the development of attitudes. Emotional reactions as well as logical thought processes affect the behavior of most people.
"The burnt child fears the fire" is one instance ; another is the rise of despots like Hitler. Both examples also point up the fact that attitudes stem from experience. In one case the experience was direct and impressive; in the other it was indirect and cumulative. The Nazis were indoctrinated largely by the speeches they heard and the books they read.
The classroom teacher in the elementary school is in a strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose word they respect.

A statement made or implied in the passage is that ______.
A. attitudes can be based on the learning of falsehoods
B. a child can develop in the classroom an attitude about the importance of brushing his teeth
C. attitudes cannot easily be changed by rewards and lectures
D. the attitudes of elementary school-aged children are influenced primarily by their teachers

Another reason it is true is that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home or has possibly never occurred to them before. To a child who had previously acquired little knowledge of Mexico, his teacher’s method of handling such a unit would greatly affect his attitude toward Mexicans.
The media through which the teacher can develop wholesome attitudes are innumerable. Social studies (with special reference to races, creeds and nationalities) , science matters of health and safety, the very atmosphere of the classroom... these are a few of the fertile fields for the inculcation of proper emotional reactions.
However. when children come to school with undesirable attitudes, it is unwise for the teacher to attempt to change their feelings by cajoling or scolding them. She can achieve the proper effect by helping them obtain constructive experiences.
To illustrate, first grade pupils afraid of policemen will probably alter their attitudes after a classroom chat with the neighborhood officer in which he explains how he protects them. In the same way, a class of older children can develop attitudes through discussion, research, outside reading and all-day trips.
Finally, a teacher must constantly evaluate her own attitudes, because her influence can be deleterious if she has personal prejudices. This is especially true in respect to controversial issues and questions on which children should be encouraged to reach their own decisions as a result of objective analysis of all the facts.
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