数学：
There are 10 jelly beans, the red bean is selected at first time, and then put it back. Another bean is selected at second time. What is the possibility of both times are red bean ( or not red bean) ? I cannot remember which one is it...
其他记得的几道全部在讨论稿里，我就不重复了。
阅读：[hide=d1000]
37.黑人劳动力转移
其他实在想不起来
SC
......,nor....or....
A. nor...,or...
B. nor...., nor...
C. nor..., and...
D. didn't....,or
Among....is/are 前后主未一致
作文.
a resturant is very successful since it has open last year. The resturant is located near a university. Therefore a lot of customers are students. The founder is looking for another place to open new branch. he believed that the new one will be as successful as the first one. In addition, two employees who will be the two managers of the new branch are trained by him. He concluded that open new branche will bring more profit.
IR
一个边长为2的正方形被四条线分成9个长方形（两条从北到南，两条从东到西），已知南边的第一个长方形的length和西边第二个长方形的length,
第一个条件可以求出那个长方形的周长还是面积
第二个条件可以求出那个长方形的周长还是面积
