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倒霉碰到裤头...放狗
阅读:1. till land 和no-till land; (文章短也简单)
P1: till land农民要先till land 然后把之前的residue清理掉;
P2:讲no-till land的好处
P3: no-till land方法的问题,比如expensive equipment, 需要knowledge什么的;
2.讲T开头的动物在Epher...pond 和permanent pond(好像这么拼)数量吧...文章长,但是很好理解;
P1:大概介绍了写Epher...和permanent的区别?失忆。。。反正就是说开始认为epher的水很快干,T得在之前develop什么。。。总之Ep...T应该生活的少
P2:本来认为Permanent pond里有更多种类的T,但惊讶的发现Epher更多,permanent pond只有一种T。
P3:整段高亮 说其实差别在于predator; Permanent pond predator多,所以T在那更在乎predator大于在于resources;而T在epher...更在乎recources.
3. P1:讲某个地方unemployment rate high, some economists believed that 某个政策导致reduce incentive to seek the jobs; 因此government决定减少这个政策去刺激经济;
P2: 但是没有achieve the goal; 因为increase the demand of the job, 但supply of job does not increase;所以有fear of losing jobs;trade union power weaken了,stronger employers negotiation power; wages reduced了
P3: 因为wages reduced了, customers are more likely to save instead of spend; Sales decreases, lose more jobs, economy worsens.
数学考到了那个Harbor题; 选的#8
1.某人买了12 containers; 每个container $4/5 containers;某人得$3的rebate; 问平均一个container多少钱; 选的是(12*4/5 -3)/12
2.DS.五个数v,w,x,y,z是否median=average?
1. v<w<x<y<z
2.w-v=x-w=y-x=z-y
CR:
有道题我真是困惑了很久...有T和M两个城市,基本情况都差不多;也爱发生vehicle accidents; Vehicle accidents claim more lives in T than in M. However, the average life expectancy is longer in T than in M; 解释discrepancy...(我的困惑是more lives这里是说死亡更多吗?如果是,为什么不写more death...)
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