5.27北京一战720，鸡肋。。。。

richardmzq

对了，再补充一到数学
说a,b两个整数最小公倍数是120，a:b=3:4.问a,b的最大公约数是多少
我选的是10

zliycdr

720还不满足- -|||
p.s. 这么详细的就是米SC, 悲剧呀悲剧~

richardmzq

没错就是这道

nowwsy

便宜车票GWD原题，就是政府为poor people着想，20美元太贵，另外为他们推出一种10美元的车票, 问assumption（好像是选10美元车票不超过他们支付底线）
Q21: TTGWD2-Q15:
The city of Workney, in raising bus fares from $1.00 to $1.25, proposed that 18 fare tokens be sold for $20.00 to alleviate the extra burden of the fare increase on the city’s low-income residents.  Critics suggested alternatively that 9 fare tokens be sold for $10.00, because a $20.00 outlay would be prohibitive for low-income riders.
The alternative proposal depends on which of the following assumptions?
Low-income residents of Workney will continue to ride the buses in the same numbers despite the fare increase.
Low-income riders would be more likely to take advantage of the savings afforded by the 9-token offer than would other riders.
The outlay of $10.00 for the purchase of 9 fare tokens would not be prohibitive for low-income bus riders.
The proposed fare increase is needed for the purchase of new buses for the city’s bus system.
Buses provide the only means of public transportation in the city of Workney.

richardmzq

没错

魏小妞要出国

哇~~LZ好厉害啊~~恭喜恭喜~~

sabrina531

3。DS面积题。一个正方形，边长是4，各边取一点EFGH，正方形EFGH也是一个正方形，内嵌于正方形ABCD。已知AE大于EB。 问EF
1。四个小三角形的面积占大正方形面积的八分之三
2。 告诉中间那个正方形的面积
我选D，确定。容易证明四个小三角形是全等的，考时有图

LZ 问下这个全等怎么证？还是说AE=EB?

richardmzq

角都相等，一条边相等是小正方形的那条边，你画个图看看，可能是我描述的不够清晰，应该不难的

nowwsy

在麻烦问下lz gwd的考的都是原题不？
多谢啊哈

sabrina531

谢谢LZ 明白了。