逻辑>750，肯定后一个算分，第一个a（aqav）简单得没道理，单题有机井，组题居然有两个单排列，做得我没脾气，算分a单题无机井，怕时间不够，不敢仔细斟酌，结果在庄同学review中逻辑高速节奏的带动下，后面发现时间富裕，可怜我前面的单题，ft。组题在大家的提示下，这几天大练难题，很必要，虽然没拿800，但是组题把握住，a的走势就问题不大。另外，组题条件中if，unless引出的推理尽量转换成个数去考虑，对提高解题速度很有帮助。

　　狼与狗那道题14000年应该是1,400年，但是答案好象没问题。

　　组题中的二维排列做好pp2的77、83和84即可，我还遇到比较繁的332分组，感觉和下面这道last的题类似，可以试试。

eight new students-r, s, t, v, w, x, y, z-are being divided among exactly three classes-class 1, class 2, and class3. classes 1 and 2 will gain three new students each: class 3 will gain two new students. the following restrictions apply:
　r must be added to class 1.
　s must be added to class 3.
　neither s nor w can be added to the same class as y.
　v cannot be added to the same class as z.
　if t is added to class 1, z must also be added to class 1.

1.which one of the following is an acceptable assignment of students to the three classes?
　　1　　　　　　2　　　　3
　(a) r, t, y 　　v, w, x　　 s, z
　(b) r, t, z　　 s, v, y 　　w, x
　(c) r, w, x　　 v, y, x 　　s, t
　(d) r, x, z　　 t, v, y　　 s, w
　(e) r, x, z　　 v, w, y　　 s, t

2.which one of the following is a complete and accurate list of classes any one of which could be the class to which v is added?
　(a) class 1
　(b) class 3
　(c) class 1, class 3
　(d) class 2, class 3
　(e) class 1, class 2, class 3.

3.if x is added to class 1, which one of the following is a student who must be added to class 2?
　(a) t
　(b) v
　(c) w
　(d) y
　(e) z
　
4.if x is added to class 3, each of the following is a pair of students who can be added to class 1 except
　(a) y and z
　(b) w and z
　(c) v and y
　(d) v and w
　(e) t and z

5.if t is added to class 3, which one of the following is a student who must be added to class 2?
　(a) v
　(b) w
　(c) x
　(d) y
　(e) z

6.which one of the following must be true?
(a) if t and x are added to class 2. v is added to class 3. r>　(b) if v and w are added to class 1. v is added to class 3. 　(c) if v and w are added to class 1. v is added to class 3. 　(d) if v and x are added to class 1. v is added to class 3. 　(e) if y and z are added to class 2. v is added to class 2. key:deaecd 　　verbal就不误导大家了，数学没什么好说的，只是题目难度好象没有什么梯度，所以最后出现极其简单的题比如my no.28居然是5(x+y)=5x+y, 问y和0大小比较（和以前有位g友一样），不要多想，影响下面就不好了，肯定800了。 　　gre，过眼云烟，惟有压力下为了目标努力拼搏值得一生铭记和珍藏。更大的挑战没理由去拒绝！