用电动势ε=6V、内电阻r=4Ω的直流电源依次分别对下列四个电珠供电，最亮的电珠

完形填空。

Mr. Jackson works in a college. He likes reading and often    1    some books from the library. He keeps    2    to the radio every morning and reading    3    after dinner. So he knows much and teaches well. His    4    worship (崇拜) him very much. Mike, Mr. Jackson's little son, is only nine. He    5    likes reading books. And he often asks his father some questions. Mr. Jackson always thinks he is too    6    to understand him, so he chooses    7    ones to answer. Of course the boy is not satisfied with (对......满意) it.      One day Mike read    8    about the electric lights and was    9    it when his father    10    him to do homework, he went on thinking    11    it. He asked him    12    questions, and his father answered all.Then his father said proudly, "Fathers always know    13    than sons!" The boy thought for a while and said, "   14    ." "Oh? Why?" Mike didn't answer and asked instead "Who invented the electric lights?" "Thomas Edison," answered Mr. Jackson. "Why didn't his father invent them then?" Mike asked again.      Looking at his son, Mr. Jackson didn't know    15    to answer!

(     ) 1. A. finds           (     ) 2. A. listening         (     ) 3. A. letters         ( ) 4. A. children         (     ) 5. A. also            (     ) 6. A. old              (     ) 7. A. wrong           (     ) 8. A. something         (     ) 9. A. worried about     (     ) 10. A. let           ( ) 11. A. at             (     ) 12. A. few            ( ) 13. A. more            ( ) 14. A. I don’t think so ( ) 15. A. when            B. sells           B. watching        B. newspapers       B. classmates     B. never         B. clever                    B. easy           B. everything         B. interested in   B. made           B. of            B. a little      B. most             B. I agree      B. what        C. borrows      C. touching       C. messages      C. students    C. even         C. bright       C. difficult    C. anything                   C. afraid of      C. told          C. to        C. a few       C. less      C. I hope so        C. which  D. reads            D. reading          D. story              D. friends           D. still             D. young              D. right           D. nothing           D. tired of          D. had              D. from              D. little              D. fewer          D. I’m afraid so   D. where

纯碱在工业上非常重要。

（1）取一定量纯碱细小粉末置于烧杯中，加入一定量的水，可以得到颗粒较大的晶体A。烧杯温度升高，理由是                                ；

（2）从上述烧杯中得到干燥纯净的晶体A，实验程序为：              ；（填序号，可重复使用）

①蒸发结晶②放入干燥器③转移入过滤器中④用水洗涤2－3次⑤用乙醇洗涤⑥加热灼烧

（3）取纯净物13.92g晶体A，进行热重分析，直到质量不再改变，生成物质Z，具体数据如下：

物质	样品A	T1oC下得到物质X	T2oC下得到物质Y	600oC时得到物质Z
质量/g	13.92	11.75	7.45	6.36

通过计算确定样品A的化学式。并写出计算过程。

必须稀释后方可静注的药物是（）

A.腺苷

B.毛花苷丙

C.利多卡因

D.普罗帕酮

E.呋塞米

默写

New Concept English    Lesson 9

It was the last day of the year and      小题1:     of people had gathered under the Town Hall Clock. It would      小题2:     in twenty minutes’ time.

…The big clock      小题3:     welcome the New Year. At that moment, everybody began to laugh and sing. 

New Concept English    Lesson 14

After I had left a small village in the south of France, I      小题4:     to the next town.      小题5:    , a young man waved to me. …I said good morning to him and he      小题6:     in the same language. Apart from a few words, I don’t know any French       小题7:    .

New Concept English    Lesson 17

My aunt Jennifer is an actress. She must be      小题8:     thirty-five years old. In spite of this, she often appears on the stage     小题9:    a young girl. …If anyone ever asks her how old she is, she always answers, “Darling, it must be                                               terrible to be      小题10:    !”

我行柜面办理兑换外汇业务时，在外汇交换水单上应加盖（）

A、外汇兑换专用章

B、个人业务专用章

C、办讫章

D、业务公章