三战550 一战550 ，二战560 ，彻底疯了。 准备还是要再战一下。 好好总结失败的原因。 祝各位一次成功吧！
9.25 添加想起来的数学寂静
a b c d 代表四个数 2 3 6 8 问 (a*b)/c/d的最小值 这个是在前10里面的 我做的是1/4
作文jj
AA
The following appeared in a memorandum from the development director of the Largo Piano Company.
“The Largo Piano Company has long been known for producing carefully handcrafted, expensive pianos used by leading concert pianists. During the past few years, however, our revenues have declined; meanwhile, the Allegro Musical Instrument Company introduced a line of inexpensive digital pianos and then saw its revenues increase. In order to increase Largo’s sales and in fact outsell Allegro, we should introduce a line of digital pianos in a variety of price ranges. Our digital pianos would be likely to find instant acceptance with customers, since they would be associated with the prestigious Largo name.”
AI
“Technology ultimately separates and alienates people more than it serves to bring them together.”
Discuss the extent to which you agree or disagree with the opinion stated above. Support your position with reasons and/or examples from your own experience, observations, or reading.
数学jj
1. （根下x^4-2*x^2*y^2+y^4）/(x-y) 答案: （x+y)
2. 2^16*5^10 问
the sum of each units 我选的是10
3. slope is -5/3（数可能记不清了）, ask u/v=
上面有两点 其中一点坐标是（2u，3v），另一点是（3u，5v）（这个点记不清了，上个点肯定正确。
4. DS 一个四边形，问角BCD的度数
（1）AB平行C D
（2）∠BC D=20（数记不清楚了） 选C
5. 一共25个人给什么玩意rate，the range of rate is 1-10. 问中数是多少？
|
Rate |
Frequency |
|
10
|
X |
|
9
|
X |
|
8
|
5 |
|
7
|
4 |
|
6
|
2 |
|
5
|
2 |
|
4
|
1 |
|
3
|
0 |
|
2
|
2 |
|
1
|
1 |
6. 有个人走100mile的路，前一半速度是40，后一半是60，问平均速度。
7. 有两个人H和S，放学回家，问谁先到家。
（1）H比S的家远30mile，
（2）S的速度是H的90%
8. 这个题好像有点技术含量
中间那点是F,D是AB的中点，E是BC的中点
知道AFC的面积是1，求ABC的面积。
今天才知道，word画图不容易啊 | 
