Scientists are continually redefining the standards for what is beneficial or harmful to the environment. Since these
standards keep shifting, companies should resist changing their products and processes in response to each new
recommendation until those recommendations become government regulations.
“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.”
数学：
1、对于大于1的正整数n，给个式子(n^2-1)!/(n^2-4)![之后好像是说它们有polynomial（现在谷歌了一下才知道是多项式的意思，所以可能队原题记错了，但是式子肯定对的）]，然后就问the dgree of the polynomial
选项有0 1 3 6 9(大概是，待证实)
2、j,k 是{2, 2^2, 2^3, 2^4, 2^5}中的数（j和k可以相等），问jk可能有多少不同的值。选项有6, 7, 8, 9, 10。我选9，其实就是从{1,2,3,4,5}选出两个可以重复的数问可以有多少不同的和。枚举得出结果
3、直角坐标系里有个梯形ABCD， AD||BC, AB=AD,，EF为AB上的两点且AE=BF（这个条件可能有点偏差，带充实），DE⊥AB，CF⊥AB，A(2,3) B(6,8) D(20,3)。求C点的横坐标。选项有一个记不清了，其他是12 16 20 24。
4、一个公司里的员工不是part-time就是full-time，去年full-time的员工和part-time的员工依次曾加了10%和5%,求公司员工平均增长了多少
(1)有250个是full-time
(2)60%的员工是full-time
我选B
5、直线k的y轴截距比-3小，问该直线的x轴截距是否大于零
(1)直线经过(2,-3)
(2)直线的斜率为-1/2
选E
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发表于 2009-8-21 13:53:00
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