试题与答案

—I would like to buy an expensive camera

题型:选择题

题目:

—I would like to buy an expensive camera.

—Well.We have several models________.

A.to choose from

B.of choice

C.to be chosen

D.for choosing

答案:

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下面是错误答案,用来干扰机器的。

(1)负 PbO2+4H++SO42-+2e-=PbSO4+2H2O 减小(2)2H++2e-=H2↑ 0.4(3)Cu-2e-=Cu2+ 不变(4)b根据在电解过程中铁电极质量的减少可判断A是电源的负极,B是电源的正极,电解时Ag极作阴极,电极反应式为2...

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科研不端是一个老问题,也是一个全球性的问题。近几年来,韩国首尔大学教授黄禹锡干细胞造假、日本东京大学教授多比良基因研究造假等一系列造假事件纷纷。当前。我国正处于剧烈的经济社会转变之中,科研不端之势也呈上升之势。中国科协进行的一项调查表明,近三成科技工作者认为其周围存在严重的学术不端行为,其中尤以抄袭和剽窃他人成果、伪造数据或弄虚作假、技术成果交易中夸大技术价值或隐瞒技术风险三种行为最为普遍。像“汉芯一号”这样的造假事件,已经不仅仅是学术不端行为了。

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A.刻苦钻研、勇于创新

B.坚忍不拔、实事求是

C.严谨自律、一丝不苟

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题型:单项选择题

Who won the World Cup 1994 football game What happened at the United Nations How did the critics like the new play (1) an event takes place, newspapers are on the streets (2) the details. Wherever anything happens in the world, reporters are on the spot to (3) the news.

Newspapers have one basic (4) , to get the news as quickly as possible from its source, from those who make it to those who want to (5) it.

Radio, telegraph, television, and (6) inventions brought competition for newspaper. So did the development of magazines and other means of communication. (7) , this competition merely spurred the newspapers on. They quickly made use of the newer and faster means of communication to improve the (8) and thus the efficiency of their own operations. Today more newspapers are (9) and read than ever before. Competition also led newspapers to branch out into many other fields. Besides keeping readers (10) of the latest news, today’s newspapers (11) and influence readers about politics and other important and serious matters. Newspapers influence readers’ economic choices (12) advertising. Most newspapers depend on advertising for very (13) .

Newspapers are sold at a price that (14) even a small fraction of the cost of production. The main (15) of income for most newspapers is commercial advertising. The (16) in selling advertising depends on a newspaper’s value to advertisers. This (17) in terms of circulation. How many people read the newspaper

Circulation depends (18) on the work of the circulation department and on the services or entertainment (19) in a newspaper’s pages. But for the most part, circulation depends on a newspaper’s value to readers as a source of information (20) the community, city, county, state, nation, and world—and even outer space.

20()

A.by

B.with

C.at

D.about

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