定义在R上的函数y=f（x）关于直线x=1对称，且x∈（0，1）时，f（x）=3

我会填。

例：(丁丁冬冬)的小溪

(       )的小草    (       )的风筝

(       )的小路    (       )的蝴蝶

(       )的野花    (       )的春天

    Of all the men who ever liked fresh air, no one liked it more than James Wilson did. He _1__ slept with his window open even when snow was falling outside.

One winter, he went to Finland on business. When he _2__ his room in the hotel, he found that the windows were closed to __3__ the icy air out. He did his best to open one but failed. The bed was really __4___, but Wilson couldn’t sleep. He __5__ forget the closed windows. No fresh air! It was __6___ to think of.

At about one o’clock in the morning, he was __7__ awake. Worrying about the air in the room. He became very angry. Where was the __8__ ? He could see something that looked like __9___ over there. He threw a shoe at it through the darkness with all the force of his strong right arm. A terrible sound of breaking glass _10__ the room, but to Wilson’s sad heart, it seemed like the sound of __11___ music.

When daylight came through the window, he __12___ and lay with his eyes close. There was __13__ to worry about. __14___ was it ? Oh, the broken window! Yes, indeed. He would have to pay __15__ that. He opened his eyes to look.

Suddenly he sat up in __16__. The window was not broken at all. The __17__ was all in one piece, just as good as it had been the night before. __18__ fresh air was entering the room through the window!

He then turned his eyes to the __19__ and saw a broken picture __20__ on the wall. There was a shoe on the floor below it, and a lot of broken glasses around the shoe.

1. A. seldom           B. often                 C. sometimes          D. always

2. A. left             B. cleaned               C. entered            D. examined

3. A. prevent          B. keep                  C. stop               D. send

4. A. cold             B. comfortable           C. bad                D. terrible

5. A. shouldn’t       B. wasn’t able to       C. couldn’t          D. wouldn’t

6. A. unlucky          B. anxious               C. difficult          D. terrible

7. A. already          B. nearly                C. hardly             D. still

8. A. waiter           B. manager               C. window             D. light

9. A. paper            B. glass                 C. a picture          D. a man

10. A. destroyed       B. covered               C. filled             D. entered

11. A. funny           B. strange               C. beautiful          D. famous

12. A. got up          B. woke up               C. went in            D. came down

13. A. a lot           B. little                C. something          D. someone

14. A. What            B. How                   C. Where              D. Who

15. A. to              B. with                  C. from               D. for

16. A. silence         B. surprise              C. trouble            D. pain

17. A. window          B. picture               C. glass              D. shoe

18. A. Much            B. No                    C. Still              D. Yet

19. A. outside         B. top                   C. side               D. bottom

20. A. lying           B. hanging               C. falling            D. put    

处理经济问题的优点是简单易行，计算方便，计算成本低，需要的数据少，应用灵活广泛的方法是（）。

A.投入产出法

B.回归分析法

C.非线性回归分析法

D.弹性分析方法

我国的国家质量标准的特性表现为科学性与时效性，其本质是“统一”。标准的这一本质赋予标准具有（）

A、强制性

B、持续性

C、约束性

D、法规性

企业必须以效益最大化为目的。这表明（）

A.企业在社会经济活动中有重要作用

B.企业是营利性机构

C.社会主义生产的根本目的是满足人民的需要

D.提高社会效益是企业生产的惟一目的