问题 不定项选择题

如图是NaCl、MgSO4、KCl固体的溶解度曲线,下列说法正确的是

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A.60℃三种物质的饱和溶液中,溶质质量分数最大的是KCl溶液

B.将80℃不饱和的MgSO4溶液降温至40℃,一定能得到其饱和溶液

C.40℃时MgSO4的溶解度比NaCl小

D.将80℃含有少量NaCl的KCl饱和溶液降温至20℃,可得到KCl晶体

答案

答案:D

完形填空

A boy walked along Carver Street, singing a sad song. He walked with his head down. Once he looked up and noticed the sign across the empty street, painted on the side of an old house. On the sign a big woman with yellow hair and a five-mile smile held out a big bottle. “Coca-Cola. Drink Coca-Cola,” the sign said.

“Boy!” the silence was cut by a sudden cry. He turned around quickly to see who had called.

An old woman was standing at her door.

“You boy! Come here this minute!”

Slowly the boy ___1___ onto the cold flat stones leading to the old woman’s house. When he arrived at her house, she ___2___ out her hand and wrapped(缠住) her ___3___ old fingers around his arm.

“Help me inside, boy”, she said, “Help me ___4___ to my bed. What’s your name?”

“Joseph,” he said.

The old woman on the bed tried to ___5___ up, raising herself on her elbow(肘). Water ___6___ from her eyes and mouth. The sight of her made Joseph feel ___7___.

“I am dying, Joseph. You can see that, can’t you? I want you to write a ___8___ for me. There’s paper and pencil on the table there.”

Joseph looked down at the ___9___, and then looked out the window. He saw the sign again: “Coca-Cola. Drink Coca-cola.”

“I want my silver pin to ___10___ to my daughter.”

Joseph bent his small body over the table and ___11___ the pencil slowly across the paper.

“There’s my Bible(圣经),” the old woman said. “That’s for my daughter, too. I want a ___12__ Christian burial(基督葬礼) with lots of singing. Write that down, too. That’s the last ___13__ of a poor old woman.”

The boy labored over the paper. Again he looked out the window.

“Here. Bring it here so I can ___14___ it.”

Joseph found the Bible, and ___15___the paper inside, laid it next to the bed.

“___16___ me now, boy,” she sighed. “I’m tired.”

He ran out of the house.

A cold wind blew through the ___17___ window, but the old woman on the bed ___18___ nothing. She was dead. The paper in the Bible moved back and forth in the wind. ___19___ on the paper were some childish letters. They ___20___ the words “Coca-Cola. Drink Coca-cola.”

1. A. rushed    B. struggled    C. hurried       D. stepped

2. A. reached  B. let      C. pushed       D. pointed

3. A. firm       B. smooth       C. dry     D. fresh

4. A. back       B. over    C. away   D. ahead

5. A. sit   B. get      C. stand   D. wake

6. A. rolled     B. burnt  C. burst   D. ran

7. A. ill   B. sick    C. unpleasant  D. funny

8. A. letter      B. note    C. will    D. message

9. A. table      B. pen     C. paper  D. woman

10. A. send     B. go      C. belong       D. come

11. A. moved  B. drew   C. used    D. pulled

12. A. great    B. merry C. splendid     D. real

13. A. hope     B. chance       C. opinion      D. wish

14. A. sign      B. read    C. remember   D. copy

15. A. setting  B. hiding C. placing       D. laying

16. A. Hold    B. Leave  C. Excuse       D. Pardon

17. A. large    B. open   C. small  D. pretty

18. A. did       B. saw     C. felt     D. knew

19. A. Described    B. Printed       C. Recorded    D. Written

20. A. formed B. spelled       C. organized   D. repeated

单项选择题