变异系数是用标准差除以算术平均数得到的相对数，其数值大，说明

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问题多项选择题

变异系数是用标准差除以算术平均数得到的相对数，其数值大，说明（）。

A．数据分布集中程度高

B．离散程度大

C．均值对总体的代表性差

D．数据分布集中程度低

E．离散程度小

答案

参考答案：B, C, E

翻译题

完成句子，根据汉语提示补全句子。

1、杂货店在音像制品店的对面。

The grocery store is ______ ______ the video shop.

2、沿着这条街直走并左转。

______ ______ ______ the street and ______ ______.

3、在第三个十字路口向右转。

Turn right ______ ______ ______ _______.

4、本周我知道了咖啡店的情况。

I ______ ______ ______ the coffee shop ______ week.

5、你能告诉我去电影院的路吗？

Can you tell ______ ______ ______ the movie ______?

写作题

开放作文。

请根据下面提示，写一篇短文。词数不少于50。

Xiao Ming tells you that he had 100 yuan yesterday morning, which he put into the pocket of his jacket.He

spent 40 yuan yesterday afternoon. But now when he reaches into the pocket of his jacket, he finds only10

yuan.

He is wondering what has happened to the rest of the money. As his friend, you suggest to him three

or four different possibilities concerning the missing money.

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