问题 选择题

钓鱼岛群岛的东海海域及部分太平洋海域探明为海底热水矿床。海底热水矿床是沉积着由岩浆热气从地底喷出的金、铜、锌、稀有金属等区域。下列说法正确的是(  )。

A.金不溶于任何溶液

B.铜、锌在空气中均能被氧化成对应的氧化物

C.铜锌合金的熔点低于铜或锌的熔点

D.的质子数和中子数之差为34

答案

答案:C

金能够溶于王水,A项错误;铜在空气中被腐蚀生成铜锈,主要成分是Cu2(OH)2CO3,B项错误;合金的熔点一般比成分金属的都低,C项正确;的质子数和中子数之差为(63-29)-29=5,D项错误。

阅读理解

  In a recently published book, I came across some exercises with interesting names such as fishbone diagrams, lotus flowers and clustering. As I used these exercises in my classes, I noticed that students were interested. They said more and wrote more. They enjoyed expressing their ideas and sharing them in groups. They were no longer passively waiting for the bell , but actively taking part in the lesson. I find that creativity can act as a way to increase participation and improve fluency.

Creativity has become a popular word in recent years. Scholars in arts, psychology, business, education and science are all working to get a deeper understanding of it. Robert J. Stemberg is a creativity specialist and Yale professor of psychology. He defines creativity as “the ability to produce work that is both new (original) and appropriate(applicable to the situation ) ”. this definition is useful, as we want our students to use language in a new way and to use it correctly and properly. Mot scholars say there are two types of creativity: big “C” creativity and small “c” creativity. Big “C” creativity refers to genius level thinking that results in artistic masterpieces and scientific breakthroughs. Small “c” creativity refers to everyday level thinking that can be used in any situation our emphasis is on the latter. While it goes without saying that any of our students could go on to be the next Picasso or Edison, our aim is to help students produce more ideas and use language in a new way.

小题1:The underlined words “waiting for the bell ” in the first paragraph probably means______.

A.longing for a phone call

B.hoping to have a bell

C.expecting the end of the class

D.waiting to speak in the class小题2: It can be inferred from the passage that the author thinks the exercises in the book were _____.

A.popular

B.useful

C.scientific

D.creative小题3:When you use a familiar word in a new way, you are ________.

A creative in the sense of big “C” creativity.

B. creative in the sense of small “c” creativity..

C. not creative in the sense of big “C” creativity..

D. not creative in the sense of small “c” creativity.

小题4:The main purpose of the passage is to _________.

A. show how useful the book is.

B, explain what creativity 

C. discuss how one can be creative 

D. tell what reaching aims at 

单项选择题 案例分析题