819少量数学

sunnyeva

    

作文：1.The following appeared as part of
a recommendation from the business manager of a department store.

    

“Local
clothing stores reported that their profits decreased, on average, for the
three-month period between August 1 and October 31. Stores that sell products
for the home reported that, on average, their profits increased during this
same period. Clearly, consumers are choosing to buy products for their homes
instead of clothing. To take advantage of this trend, we should reduce the size
of our clothing departments and enlarge our home furnishings and household
products departments.”

    

2. “All
groups and organizations should function as teams in which everyone makes
decisions and shares responsibilities and duties. Giving one person central
authority and responsibility for a project or task is not an effective way to
get work done.”

    

数学 8.19

    

1．  一个数x除以5余3，除以7余4，数y除以5余3，除以7余4，
        问x ,y之差一定能被多少整除。

    

思路：x,y的通式都一样，为35M+N（N不求无所谓，因为x,y情况完全一样。如果想求N, 方法为：最小满足除以5余3，除以7余4的数是18，所以通式为35M+18），所以x，y之差必然为35的倍数，选35

    

2．
                数轴上从左到右依次有点A，B，C,D, E,F,G    七个点（有图示）, 点的间距都相等，已知G点坐标是3¹²， F点坐标是3¹¹，
        问以下哪个点的坐标是
        —（3¹²）．D点坐标满足，选D。
        

    

3． 
已知a-b, a/b 都是偶数，a,b
都是整数。问下面哪一个一定是奇数。

    

A．    a/2, B. b/2,  C.
(a+b)/2, D. (a+2)/2, E. (b+2)/2

    

这题选D。

    

代入数字法：（1）a=12,b=2 , 排除A和E

    

            (2) a=8, b=4, 排除B，C

此外，还有一些JJ上的题，例如货物价值〉499那题，golf抛物线那题，P^xy,  JJ 上的答案几乎都是正确的，前人的劳动就是值得尊重啊。

VERBAL考得太差，不得不准备2战。阅读有：CEO， 皮肤呼吸。

祝大家好运了。

ada3063

谢谢lZ