试题与答案

实验小学为灾区捐款.二年级捐款306元,三年级的捐款是二年级的3倍,二、三年级一

题型:解答题

题目:

实验小学为灾区捐款.二年级捐款306元,三年级的捐款是二年级的3倍,二、三年级一共捐款多少元?

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:从A直线中可以读出,A和B的交点表示该电源盒电阻组成闭合电路时的工作状态,即与形成闭合电路时,有:,电源的效率为与形成闭合电路时,有:,电源的工作效率为故,所以选C,点评:两图线的交点就...

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题型:阅读理解

阅读理解。

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     He has two children. One is a girl, and the other is a boy. They study in Beijing but they are in

different grades. Their mother is an English teacher, too. They all like China. They like Chinese food

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1. Mr. Green is _____. But he works in _____.

A. teacher; U.S.A.  

B. American; China  

C. America; Beijing  

D. teacher; China

2. He _____ English in a middle school and _____ Chinese in Beijing.

A. teaches; learns  

B. learns; teaches  

C. learns; learns  

D. teaches; teaches

3. He can write _____ now.

A. no Chinese  

B. a little Chinese  

C. Chinese very well  

D. good Chinese

4. His children _____ students in a middle school in _____.

A. are; Beijing  

B. aren't; China  

C. are; U.S.A.  

D. aren't; Beijing

5. His wife teaches English in _____, too.

A. Chinese  

B. Beijing  

C. U.S.A.  

D. middle school

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