桌上有若干根320米长的相同铁丝,若用一根铁丝作一边.(1)围成一个三角形,它的

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问题:

桌上有若干根
3
20
米长的相同铁丝,若用一根铁丝作一边.
(1)围成一个三角形,它的周长是多少米?
(2)围成一个正方形,它的周长是多少米?面积是多少平方米?
考点:正方形的周长长方形的面积正方形的面积三角形的周长三角形的面积
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阅读短文,完成下面的问题。

      Hello! I'm Mike. I live in Canada. I'm going on a trip to Beijing by plane. Beijing is the capital city of China.

Beijing is a big and beautiful city. Tian'anmen Square is in Beijing. The Palace Museum is there, too. I will go

there with my mother, I hope we can have a good time.

1. Where does Mike live?

_________________________________________________________________

2. How can Mike get to Beijing?

_________________________________________________________________

3. Where are the Tian'anmen Square and the Palace Museum?

_________________________________________________________________

4. Does Mike go there with his mother?

_________________________________________________________________

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药品与非药品、内用药与外用药、处方药与非处方药之间()

A.1500M2 

B.1000M2 

C.500M2 

D.150M2 

E.50M2

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染色体存在于(  )

A.细胞壁

B.细胞膜

C.细胞核

D.液泡

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直接影响活动效率的个性心理特征()

A.能力

B.气质

C.性格

D.人格

E.行为

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( )适合于证券数目较小的情况。

A.分层抽样法

B.优化法

C.方差最小化法

D.方差最大化法

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