有以下程序：#define P 3void F(int x){return(P*x*_爱下问搜题

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问题单项选择题

有以下程序：#define P 3void F(int x){return(P*x*x);}main(){printf("%d\n",F(3+5));}程序运行后的输出结果是______。

A．192

B．29

C．25

D．编译出错

答案

参考答案：D

解析：return 语句用于从被调函数带回一个函数值。void 关键字表示“无类型”，即不需要从被调函数中带回函数值，所以不需要 return 语句，故编译时出错。

完形填空

Jason and Harry joined a wholesale company together just after graduation. They both worked very hard.
After several years, the boss made Harry sales manager but Jason      a salesman. One day Jason could not stand it anymore. He handed in his resignation letter (辞职信) to the boss and complained that the boss did not         hard-working employees, but only raised those        tried to please him. He thought that it was really        .
In order to help Jason to realize the        between him and Harry, the boss asked Jason to do the        --- "Go and find out if there is anyone selling watermelons in the market." Charlie went, returned and only said, "Yes." The boss asked, "How much per kg?" Charlie went back to the market to ask and returned to        , "$ 12 per kg."
The boss told Jason that he would ask Harry the        question. Harry went, returned and said, "Boss, only one person selling watermelons. $12 per kg, $ 100 for 10 kg. He has a total of 340 melons. On the table are 58 melons, and every melon weighs about 15 kg,       from the South two days ago. They are fresh, red, and of good        ."
Jason was        and he realized the difference between himself and Harry. He decided not to leave but to learn from Harry.
My dear friends, you know, a more        person is more observant(观察力敏锐的), thinks more and understands in        . For the same matter, he sees several years ahead,       you see only tomorrow. The difference between a year and a day is 365 times, so how could you        ?
Think: how far have you seen ahead in your life? How thoughtful are you?

D．meaningless

A．competition

B．relationship

B．intelligent

D．hardworking

问答题案例分析题

阅读材料，回答下列问题。

材料一：下图为某地区的干燥度分布示意图

注：干燥度是某地一定时段可能蒸发量与降水量的比值。

材料二：酒泉、武威、兰州等地自古是重要的粮食、棉花及优质瓜果产区。近年来，酒泉等地农民在瓜秧周围的表土上铺一些小石块，以提高西瓜的产量和质量，这就是“压砂技术”。

简述酒泉附近地区农业生产利用 “压砂技术”能够提高瓜果产量和质量的主要原因。