2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现

题型:选择题

问题:

2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源.X射线是一种高频电磁波,若X射线在真空中的波长为λ,以h表示普朗克常量,c表示真空的光速,以E和m分别表示X射线每个光子的能量和质量,则(  )

A.E=,m=0

B.E=,m=

C.E=,m=0

D.E=,m=

考点:X射线α、β、γ射线
题型:选择题

心肌炎急性期一般为()

A.一年

B.一周

C.三个月

D.以上都不是

E.一个月

题型:选择题

导致先天性甲状腺功能低下,胎儿甲状腺肿大的药物是().

A.四环素 

B.反应停 

C.氯霉素 

D.新生霉素 

E.磺胺

题型:选择题

阅读理解。

     It is true that good writers rewrite and rewrite and then rewrite some more. But in order to work up the

desire to rewrite, it is important to learn to like what you write at the early stage.

     I am surprised at the number of famous writers I know who say that they so dislike reading their own

writing later that they even hate to look over the publishers' opinions. One reason we may dislike reading

our own work is that we're often disappointed that the rich ideas in our minds seem very thin and plain when

first written down. Jerry Fodor and Steven Pinker suggest that this fact may be a result of how our minds

work.

     Different from popular belief, we do not usually think in the works and sentences of ordinary language

but in symbols for ideas (known as "mentalese"), and writing our ideas down is an act of translation from

that symbolic language. But while mentalese contains our thoughts in the form of a complex tapestry (织锦),

writing can only be composed one thread at a time. Therefore it should not be surprising that our first attempt

at expressing ideas should look so simple. It is only by repeatedly rewriting that we produces new threads and

connect them to get closer to the ideas formed in our minds.

     When people write as if some strict critics (批评家) are looking over their shoulder, they are so worried

about what this critic might say that they get stuck before they even start. Peter Elbow makes an excellent

suggestion to deal with this problem. When writing we should have two different minds. At the first stage,

we should see every idea, as well as the words we use to express it, as wonderful and worth putting down.

It is only during rewrites that we should examine what we excitedly wrote in the first stage and check for

weaknesses.

1. What do we learn from the text about those famous writers?

A. They often regret writing poor works.

B. Some of them write surprisingly much.

C. Many of them hate reading their own works.

D. They are happy to review the publishers' opinions.

2. What do people generally believe about the way human minds work?

A. People think in words and sentences.

B. Human ideas are translated into symbols.

C. People think by connecting threads of ideas.

D. Human thoughts are expressed through pictures.

3. What can we conclude from the text?

A. Most people believe we think in symbols.

B. Loving our own writing is scientifically reasonable.

C. The writers and critics can never reach an agreement.

D. Thinking and writing are different stages of mind at work.

题型:选择题

如今,互联网已成为未成年人认知和参与社会的新途径。调查显示,我国未成年人中,91.4%使用过互联网,72.5%上网时遭遇过不良信息,64.9%会模仿网络语言和行为。因此,文化建设应当()

①加强文化市场管理,净化网络社会文化环境

②深入开展道德教育,提高未成年人道德修养

③大力发展文化产业,全方位提升文化竞争力

④积极推广信息技术,促进传媒的商业化发展

A.①②

B.①④

C.②③

D.③④

题型:选择题

质量验收的基本单元有()。

A、单项工程

B、分部工程

C、检验批

D、分项工程

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