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问题 单项选择题

某土壤容重为1.45g/cm3，今测得其湿土质量为15g，烘干后，称重为13g，则此时这种土壤的空气孔隙度为（）

A.15

B.20

C.25

D.30

答案

参考答案：D

写作题

请阅读以下短文，然后以约30词概括短文内容的要点。

Is Failure a Bad Thing?

Failure is what often happens in our life．Students may fail in exams, scientists may fail in their research work, and athletes may fail in competitions．

Although failure happens to everyone, attitudes towards failure are various．Some people don’t think their failure is a very important thing at all．So they pay no attention to it．As a result, they will have the same failure a period later．Some people think themselves are fools and lose their hearts in everything after they get a failure．Consequently, they spend their time and energy on useless things and they may really be fools as they have thought．

Other people are quite different from the two kinds of people mentioned above．Instead of being distressed and lost, they draw a lesson from every failure and become more experienced．After hard work, they will be successful in the end．It is said that failure is the mother of success．Success will be gained after times of failures so long as we are good at drawing a lesson from our failures．

In my opinion, failure is not a bad thing, the really bad thing is taking a failure as failure or even lose our heart after failure．
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单项选择题

不要过分地依赖语言。不要总是企图在语言上占上风。语言解不开的，事实可以解开。语言解开了而事实没有解开的话，语言会失去价值，甚至只能添乱。想到让事实说话的人比起动不动就想说倒一大片的人更安详。 这段话的主要观点是( )。

A．语言是不重要的，而事实才重要

B．语言是不可靠的

C．事实解不开的话，语言也解不开

D．事实比动听的语言更有力量
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