为避免出现不良反应，在输血前后及输两袋血液之间应输入少量的（） A.0.9%NaCI

2004年12月26日，在南亚、东南亚地区发生强烈地震，引发了海啸，造成大量的人员伤亡，但在现场却很少发现动物的尸体。人们猜测可能是由于动物能够听到地震产生的__________声波，这种声波的_______小于20___________，人耳无法听到。

某同学在实验室先后完成下面二个实验：①测定一节干电池的电动势和内电阻；②描绘小灯泡的伏安特性曲线．

（1）用①实验测量得到数据作出U一I图线如图中a线，实验所测干电池的电动势为______V，内电阻为______Ω．

（2）在描绘小灯泡伏安特性曲线的实验中，为减小实验误差，方便调节，请在给定的四个电路图和三个滑动变阻器中选取适当的电路或器材，并将它们的编号填在横线上．应选取的电路是______，滑动变阻器应选取______

E．总阻值15Ω，最大允许电流2A的滑动变阻器

F．总阻值200Ω，最大允许电流2A的滑动变阻器

G．总阻值1000Ω，最大允许电流1A的滑动变阻器

（3）将实验②中得到的数据在实验①中同一U一I坐标系内描点作图，得到如图所示的图线b，如果将实验①中的电池与实验②中的小灯泡组成闭合回路，此时小灯泡的实际功率为______，若将两节与实验①中相同的干电池串联后与该小灯泡组成闭合回路，则此时小灯泡的电压为______，实际功率为______．

“运费”栏应填（）。

A．502/500/2

B．502/500/1

C．502/500/3

D．500

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 words 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 produce 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.

“把我国建设成为富强、民主、文明、和谐的社会主义现代化国家”是[ ]

①我们的最高理想

②党在社会主义初级阶段初级阶段基本路线的内容之一

③是实现 * * 主义理想的必然趋势和最终目的

④时代赋予当代中国青年的崇高历史使命

A．①②　

B．①③ 　

C．②③　

D．②④