只记得几道题了
数学
1.n is a positive integer, is 2n+1 dividable by 3?
(1)n 除以3余1
(2)n 除以6余4
2.n是不是125000的factor?
(1)n=5^8
(2)n=20^5
3.有个一个中学有物理，算数，经济三门课。选物理的一定选算数，选经济的一定不选物理。同时选了算术和经济得有17人。给出选物理的15人，选算数35人，选经济22人。问至少选一门的有多少人？（这题印象很深）
4.A完成一项工作要1/3小时，the rate of B alone 是9/10的什么什么，题目很绕~当时就看了半天，现在又忘了~想到再补上
碰到了这道语法，但B选项后面是Japanese,不是Japan's
If China’s 1.6 billion people were to consume fish at the rate of the Japan，they would...
A)
B) If China’s 1.6 billion people were to consume fish at the same rate as the Japan,
C) If China’s 1.6 billion people would consume fish at the same rate as the Japanese
D) If the 1.6 billion people in China would consume fish at the same rate as the Japan,
E) If the 1.6 billion people in China consume fish at the same rate as the Japan’s | 
