北美5 20 700 在CD上收获良多，真诚感谢整理狗狗的人，fylonglong，魏小妞要出国，wbb7631911，紫苏0709，zhaoyiqing你们才是大家的英雄,最最可爱的人。本人不是NN，考了3次才上700 (M50 V 34)，分数也不高，但对于V还有2题没做完， 2题乱点(没时间了，我可怜的之PACE)，有700我也满足了，不想太考了，太折磨人了。我不是N人，所以真的记不住狗，数学狗可能遇到有20只， V的狗狗阅读有3篇，狗狗很全了，还有一篇实在想不起来， pls forgive me cders.只有一道数学狗狗纠正一下。 106两个pump以各自的速率向500升 的油桶注油，问，一共需要多少时间 A. 第一个pump注500升油的时间比第二个pump注500升油的时间要少1分钟 B. 第一个pump注入的量和第二个pump注入的量的比是3:2 条件一：500/V1+1=500/V2 不充分
条件二：应该说是相同时间的注入量，所以V1*T:V2*T=3:2不充分
条件一加条件二可以求出V1和V2，既可以求出总共时间，所以选C
我遇到的条件是， 1。第一个pump每分钟比第2个pump多一gallon.
2.第一个pump比第2个多注了100 gallon (应该是)
然后作文是：
With the increasing emphasis on a global economy and international cooperation, people need to understand that their role as citizens of the world is more important than their role as citizens of a particular country.” The following appeared as part of a plan proposed by an executive of the Easy Credit Company to the president.“The Easy Credit Company would gain an advantage over competing credit card services if we were to donate a portion of the proceeds from the use of our cards to a well-known environmental organization in exchange for the use of its symbol or logo on our card. Since a recent poll shows that a large percentage of the public is concerned about environmental issues, this policy would attract new customers, increase use among existing customers, and enable us to charge interest rates that are higher than the lowest ones available.”
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发表于 2010-5-24 13:20:33
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