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提示:假设你叫汪华,是一名中学生,16岁,身高才1.50米,体重却达70公斤。为此同学们常取笑你。然而你又非常爱吃东西,尤其是肉和甜食。现在你变得越来越胖,为此你很苦恼,于是1999年6月20日写信向医生求教。

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A. evaporation B. water cycle C. Complicated process D. ever-going-on process E. rainfall F. ground water G. vapor H. transpiration I. high land J. formation of clouds K. formation of rain L. cold air M. drops of rain N. absorbed by soil O. porous rock layer P. non-porous rock layer Q. accumulation of water R. process of water cycle 复杂的过程( ) 水的聚集( )

圆A的半径比圆B的半径长2cm,则我们可以肯定圆A与圆B的()。

A. 面积之差为4π cm2
B. 周长之差为4πcm
C. 周长之差为2πcm
D. 面积之差为2πcm2

Ladies and Gentlemen,Happy New Year! This is the first new year since our company’s opening here. As I look back over the past year, I am grateful to you all for your efforts which have made it possible for the company to achieve unexpected high performance. I thank you again.I hope that this year will be an even greater year for our company and for all of us.

The Internet lets your customers speak out freely and tell you exactly what they like or don’t like about your business. Listen to them. Make the necessary change to improve service or else you may find yourself with fewer customers.

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