下列说法中正确的是( ) A.相等的弦所对的弧相等 B.相等的圆心角所对的弧相等

题型:选择题

问题:

下列说法中正确的是(  )

A.相等的弦所对的弧相等

B.相等的圆心角所对的弧相等

C.在同一个圆中相等的弧所对的弦相等

D.相等的弦所对的圆心角相等

考点:圆心角,圆周角,弧和弦
题型:选择题

阅读理解。

     Learning a new language is always a challenge. There are new words, new grammar, and new

pronunciation. Language is an important part of culture, and becoming familiar with (熟悉) the culture

as well as the language can make the learning experience much more enjoyable.

     When I was a university student, I studied Chinese for three years. Before I went to university, I had

very little knowledge of China. Therefore, when I started learning to speak Chinese, it was important for

me to also learn about China's history and culture. China's culture is very different from my own and I

become interested in it soon.

     It will be much more fun to learn about culture when you study a new language. Culture can teach you

so many things about a language. It can give you background information about the language and tell you

the history of the language. I also found out one fact, that is, if you have some knowledge about the country

and the culture, you will communicate with its people much easier.

     Whenever I try to learn a new language, I enjoy knowing information about the culture as well. It's a

challenge to dig (挖掘) deeper for more information, but it is very rewarding!

1. When we learn a new language, we will have a chance to _______. [ ]

A. learn new words, new grammar, and new pronunciation

B. learn about China's history and culture

C. stay in the other country and learn its language

D. communicate with people in China

2. According to the passage, the writer must be _______. [ ]

A. a Chinese student who is studying abroad (国外)

B. a foreign student who is studying in China

C. a famous writer who wants to learn a new language

D. a teacher who is teaching English in China

3. If you have some knowledge about the country and the culture, _______. [ ]

A. you can get a good grade in the exam

B. you will communicate with its people much easier

C. you will be interested in its history

D. you will make more friends

4. The underlined word "rewarding" means _______ in Chinese. [ ]

A. 有益的

B. 困难的

C. 值得鼓励的

D. 实用的

5. What's the best title for this passage? [ ]

A. An Enjoyable Experience

B. How to Learn a New Language

C. How to Face the Challenge When You in Trouble

D. The Importance of Culture in Learning a Language

题型:选择题

如图所示,电阻R1 = 2Ω,小灯泡L上标有“3V,1.5W”(灯泡的电阻不随温度变化),电源内阻r = 1Ω,滑动变阻器的最大阻值为R0(大小未知).当触头P滑动到最上端 a时, 安培表的读数为l A(其电阻不计),小灯泡L恰好正常发光,求:

(1)滑动变阻器的最大阻值R0;     

(2)电源的电动势E多大;

(3)当触头P滑动到最下端 b时电源的效率多大?

题型:选择题

因产品存在缺陷造成人身、他人财产损害的,应由谁承担赔偿责任?

题型:选择题

甲状腺功能亢进患者血中,下列哪一种物质的浓度降低

A.氨基酸

B.葡萄糖

C.胆固醇

D.血钙

E.尿酸

题型:选择题

在下面横线处,填上对修辞方法及其作用的正确表述.(*

A.运用了反问的修辞手法,以表现战士们可爱英勇

B.运用了设问的修辞手法,表现了对战士的喜爱

C.运用了夸张的修辞手法,赞美战士的可爱英勇

D.运用了比喻的修辞手法,说明战士的英勇不屈

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