折光率是在20℃条件下，以什么作单色光源进行测定（） A.汞灯共振线 B.钠光线 C

阅读理解。

     When you go to see a doctor, he will write you a note (处方) to take to the chemist for some

medicine. Chemists are usually good at reading doctors' notes.But sometimes doctors write too badly

and even the chemist can not read them.

      One day a man wrote to a doctor to invite (邀请) him to have dinner at his house. The doctor wrote

a reply (回复), but he wrote too badly and the man could not read it.

     "What shall I do?" he asked his wife, "I don't know whether he is going to come or not. I don't want

to call him and say that I don't understand him."

     His wife thought for a while and then she had an idea. "Take it to the chemist," she said, "He will be

able to(能) read it for us."

     "Thank you," said her husband. "That's a good idea." He went to the chemist's shop and gave the

doctor's "note" to him. The chemist looked at it for a long time.

      "Could you wait a moment, sir?" he said. Then he went to the back of his shop. After a few minutes

he came back, carrying a large bottle. He gave the bottle to the man.

     "Take one spoonful (一匙) every day."he said.

1. What did the doctor do when he was invited to have dinner? [ ]

A. He said he would come on time.

B. He wrote the man a reply.

C. He was very glad.

D. He wrote a note to the chemist.

2. Why couldn't the man understand the "note"?[ ]

A. Because the doctor wrote badly.

B. Because the man didn't know much about medicine.

C. Because the doctor didn't like to go.

D. Because the man never went to school

3. The wife wanted her husband to _____.[ ]

A. call the doctor to have dinner with them

B. go to the chemist and get some medicine

C. take the reply to the chemist for help

D. read it again

4. In this story, the word "chemist" means "______" in Chinese.  [ ]

A. 护士

B. 化验师

C. 药剂师

D. 药房

5. From this story, we can infer(推测) ______. [ ]

A. The man took the bottle of medicine back home.

B. The chemist could read the doctor's note.

C. The chemist couldn't read the doctor's note, either.

D. The chemist helped the man at last.

阅读《自己的命运自己掌握》，完成问题。

　　①经济学上有一个著名的希尔顿钢板价值说。大意是：一块普通的钢板价值5美元，如果把这块钢板制成马蹄掌，它就价值10．5美元；如果做成钢针，就价值3550．8美元；如果把它做成手表的指针，价值就可以攀升到25万美元。

　　②多数人出生在普通的家庭，或许还资质平平，容貌一般，犹如一块普通的“钢板”，只值5美元。然而，只有那些饱受了一次又一次残酷打磨、敲击成为手表指针的普通的“钢板”，才能将自己的人生价值提高千百倍，实现人生价值的成倍增值，从而成为一个高附加值的人。

　　③究竟是什么使我们在公正的时间面前有了这么大的差距，有了无法跨越的鸿沟？答案其实很简单——就是你自己。是做钢板、马蹄掌、钢针还是手表的指针，完全取决你自己。

　　④价值越高，所经受的磨难和所需要的付出就越多。很多人都很羡慕那些明星和偶像的一夜成名、一炮走红，但又有几个人想过他们光鲜背后那些不为人知的艰辛？没有人能随随便便成功，那些明星和偶像也不能例外。“台上一分钟，台下十年功。”他们的功成名就也是“夏练三伏，冬练三九”辛苦换来的。也有很多人说他们的成功，是众力合促，才造就了他们的成功。当你这么想的时候，你忽视了一个最基本的哲学常识——内因是根本，外因是条件，外因通过内因而起作用，他们的功成名就也是主观努力的结果。

　　⑤成功是一个过程，这个过程就是努力。别人只能扶你一程，扶不了你一生。过了这一程，后面的路还得你自己走。清代书画大师郑板桥有句名言：“流自己的汗，吃自己的饭。自己的事自己干，靠天靠地靠祖上，不算是好汉。”

　　⑥生长于参天大树下的树苗，因依赖大树的庇荫而最终只能成为灌木，甚至死去。人亦如此。有些人思想上不能自立，生活上不能自理，学习上不愿自强，皆因过分依赖他人。须知，依赖只能滋长惰性、束缚手脚，最终泯灭自立自强的勇气和毅力。

　　⑦尽管这是一个合谋的时代，但要想成功还得靠自己。所以，不要把前程和希望寄托在别人身上，不要让你的命运掌握在别人手里，_______________________。只有自己做自己的主人，才能最终到达成功之巅。

1．请你概括出本文的中心论点。

答：_________________________

2．请你简要分析第④段的论证过程。

答：_________________________

3．根据上下文，为第⑦段横线处填写一个句子。

答：_________________________

在下列各物理量的研究中使用相同物理方法的是（    ）

（1）研究压力的作用效果与压力大小关系，保持受力面积大小的不变

（2）5Ω与10Ω的电阻串联在电路中与一个15Ω的电阻在同一电路中的效果相同

（3）在研究磁现象时，用磁感线来描述看不见摸不着的磁场

（4）探究平面镜成像特点时用B蜡烛代替A蜡烛的像

A．（1）与（2）

B．（2）与（3）

C．(2)与（4）

D．（1）与（4）

关于重组DNA技术的叙述，错误的是( )。

A．质粒、噬菌体可作为载体
B．限制性内切酶是主要工具酶之一
C．重组DNA由载体DNA和目标DNA组成
D．重组DNA分子经转化或转染可进入宿主细胞
E．进入细胞内的重组DNA均可表达目标蛋白

银行存款余额调节表是调整企业银行存款账面余额的记账依据。( )