问题 计算题

一锅开水投入了5个糖馅的甜汤圆,随后又投入了5个肉馅的咸汤圆,甜、成汤圆在沸水中翻滚,象征着封闭系统进入了一个自发的过程,随后,用两只碗各盛了5个汤圆,每碗汤圆中共有六种可能:

①全是甜的  ②全是咸的  ③1甜4咸  ④甜1咸

这是四种不平衡的宏观态;

⑤2甜3咸  ⑥3甜2咸

这是两种相对平衡的宏观态。

两只碗各盛5个汤圆共有32种组合方式,我们称为32个微观态,试问:

(1)以上六种宏观态所对应的微观态的个数各是多少?请设计一个图表来表示。

(2)以上相对平衡的宏观态出现的概率是多少?

答案

解:(1)宏观态对应的微观态个数

(2)相对平衡的宏观态出现的概率为:

阅读理解

Education is very important for the development of China. As we know, China has the largest population in the world and most of them live in the countryside. Because of the economic(经济)conditions, many families are very poor, especially those in the remote(偏僻的)areas, and they can’t afford to send their children to school. Many children have to stop attending school. Project Hope is aimed at solving this problem so that every child of school age can receive a regular education.

Project Hope mainly depends on the contributions(捐款)of the urban(城市的)people and overseas Chinese who care about the development of China’s education. The contributed(捐赠)money will be distributed(分配)by Project Hope council to the countryside to help the children who can’t afford the education. One hundred yuan will help such a child finish his primary education.

Project Hope is a good way to improve the education in the rural(农村的)areas, but it isn’t enough. So far, only a small part of the children benefit(受益)from it. So we should pay more attention to the problem and do much more to help raise the educational level of the country.

根据短文内容判断正(A)误(B)。(10分)

小题1:In the remote areas many poor families can’t afford their children’s regular education.

小题2:Project Hope only depends on the contributions of the urban people and overseas Chinese.

小题3:Project Hope aims to afford an education for the poor children.

小题4:One hundred yuan will help a poor child finish his primary education.

小题5:So far, most part of the children have benefited from Project Hope.

问答题