黑暗中小明从他的一大串钥匙中,随便选择一把,用它开门,下列叙述正确的是[ ] A

题型:选择题

问题:

黑暗中小明从他的一大串钥匙中,随便选择一把,用它开门,下列叙述正确的是[ ]

 A.能开门的可能性大于不能开门的可能性

B.不能开门的可能性大于能开门的可能性

C.能开门的可能性与不能开门的可能性相等

D.无法确定

考点:概率的意义
题型:选择题

(1)如果增加300元记作+300元,那么减少200元记作______.

(2)如果高于海平面286米记作+286米,那么低于海平面530米记作______.

(3)如果收入2500元记作+2500元,那么支出1300元记作______.

(4)如果把平均成绩记为0分,+8分表示比平均成绩______,-8分表示比平

均成绩______,比平均成绩少0.5分记作______分.

(5)零上10℃一般记作______.北京今天的最高温度是+2℃,哈尔滨今天的最高温度是-6℃,这两个城市中,______温度高一些.

题型:选择题

阅读下面的资料,回答问题:

      拉玛猿是与类人猿相当接近的进步猿类,生活在1400万年到1000万年,是人类的远祖,我国云南禄丰及开远均发现过拉玛猿化石。巨猿是发现与我国南方的巨大猿类化石。它是人类进化中的一个旁支,除中国外,在印巴次大陆还发现了另一个种。南猿是人类进化中稍后阶段的代表,其中有些成为进化中的旁支而与真人同时存在。南猿化石主要发现与非洲南部和东部。

(1)请概括出这段文字中所包含的2条观点:

       ①__________________________________________________________________

       ②____________________________________________________________________

(2)请列举出这段文字中的2条事实:

       ①________________________________________________________________

       ②________________________________________________________________

题型: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.
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.

The central idea of the above passage is that ______.

A.attitudes affect our actions

B.teachers are important in developing or changing pupils’ attitudes

C.attitudes can be changed by some classroom experiences

D.by their attitudes, teachers inadvertently affect pupils’ attitudes

题型:选择题

商业银行可以采取的风险计量方法不包括( )。

A.因果关系分析
B.VaR
C.敏感性分析
D.情景分析

题型:选择题

影响凝结放热的因素有()

A.蒸汽中含有不凝结气体

B.蒸汽的流动速度和方向

C.冷却表面的情况

D.管子的排列方式

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