在Rt△ABC中,各边的长度都扩大两倍,那么锐角A的各三角函数值( ) A.都扩

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问题:

在Rt△ABC中,各边的长度都扩大两倍,那么锐角A的各三角函数值(  )

 A.都扩大两倍   B.都缩小两倍 C.不变 D.都扩大四倍

                       

考点:锐角三角函数的定义
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根据句意和所给英文,中文,首字母提示写出单词,完成句子。

1. Can you help Tom with ________(he) homework?

2. My cousin often ________(fly) a kite in spring.

3. The shop is ________(close) at this time of day.

4. My bother buys two ________(e-dog) in the morning.

5. We__________(China) eat rice every day, but the English don't.

6. Yao Ming and Kobe Bryant are my favourite basketball__________(play).    

7. He has no time to have lunch. He is b__________.

8. Tomorrow is Millie's birthday. I want to buy her a p___________.

9. 《Let the bullet fly》(让子弹飞) is an interesting f__________.

10. They play football on the football f__________.

11. Mr Wu is our maths teacher. He t___________ us maths.

12. Amy is a member of the Swimming Club.She is a very good s____________.

13. W__________ would you like? I'd like this yellow one.

14. Halloween is on O___________ 31st. People in the West celebrate it.

15. At the weekend, I usually go__________(跑步) for half an hour.

16. They go to the Reading Club __________(两次) a week.

17. On Mondays and __________(星期三), Simon plays football with Sandy together.

18. We cut out the eyes,the nose and the sharp __________(牙齿) to make pumpkin lanterns.

19. On Millie's birthday,her friends share the big cake ________(和) her.

20. Nick often looks for things on the __________(因特网) at the weekend.

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关于公司发行新股的条件:公司要具备健全且运行良好的组织结构,具有持续盈利能力,财务状况良好,最近( )年内财务会计文件无虚假记载,且在最近3年内无其他重大违法行为。

A.1

B.2

C.3

D.5

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从岩石或裸地开始的原生演替称为______。

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简述总统制政府中总统与立法机关的关系。

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西域都护

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