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设根结点的层次为0，则高度为k的二叉树的最大结点数为【3】。

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The Spring Festival is a traditional festival in China, and Chinese have been accustomed to celebrating it at home. But now more and more people choose to travel during this most important festival. Here is a discussion on this topic: 1) Some people think it is more interesting to travel during the Spring Festival. 2) Other people think it is better to stay at home with their families during the Spring Festival. 3) My opinion on this topic. In your essay, you should use the three pieces of information mentioned above.You should write 160～200 words on ANSWER SHEET 2.

人类社会迄今为止所经历的经济形式有：自然经济、商品经济、市场经济、计划经济。( )

A. 对
B. 错

散列法存储中处理碰撞的方法主要有两类：【5】和开地址法。

"Intelligence" at best is an assumptive construct--the meaning of the word has never been clear. (61)There is more agreement on the kinds of behavior referred to by the term than there is on how to interpret or classify them. But it is generally agreed that a person of high intelligence is one who can grasp ideas readily, make distinctions, reason logically, and make use of verbal and mathematical symbols in solving problems. An intelligence test is a rough measure of a child’s capacity for learning, particularly for learning the kinds of things required in school. It does not measure character, social adjustment, physical endurance, manual skills, or artistic abilities. It is not supposed to-it was not designed for such purposes. (62)To criticize it for such failure is roughly comparable to criticizing a thermometer for not measuring wind velocity.The other thing we have to notice is that the assessment of the intelligence of any subject is essentially a comparative affair.(63) Now since the assessment of intelligence is a comparative matter we must be sure that the scale with which we are comparing our subjects provides a "valid" or "fair" comparison. It is here that some of the difficulties which interest us begin. Any test performed involves at least three factors: the intention to do one’s best, the knowledge required for understanding what you have to do, and the intellectual ability to do it. (64) The first two must be equal for all who are being compared, if any comparison in terms of intelligence is to be made. In school populations in our culture these assumptions can be made fair and reasonable, and the value of intelligence testing has been proved thoroughly. Its value lies, of course, in its providing a satisfactory basis for prediction. No one is in the least interested in the marks a little child gets on his test; what we are interested in is whether we can conclude from his mark on the test that the little child will do better or worse than other children of his age at tasks which we think require" general intelligence". (65)On the whole such a conclusion can be draw with a certain degree of confidence, but only if the child can be assumed to have had the same attitude towards the test as the other with whom he is being compared, and only if he was not punished by lack of relevant information which they possess. To criticize it for such failure is roughly comparable to criticizing a thermometer for not measuring wind velocity.