TT-4-36，TT-4-37 很弱的题，不知道是自己当机了，还是题目答案有问题

Q36:
Is y – x positive?
(1)   y > 0
(2)   x = 1 - y
  
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer: C
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Q37:
Working alone at their respective constant rates, machine A and machine B can fill a certain order in 3 hours and 6 hours, respectively.  If the two machines work simultaneously at their respective constant rates, how many hours does it take the two machines to fill 1/2 of that order?

A. 1/2
B.  3/4
C.  1
D. 1 1/4
E. 1 1/2
Answer: E

我的答案如上，可是正确答案是E，C。很弱的题，不知道是自己当机了，还是题目答案有问题.....，NN帮忙！！！！！！

第一题的确选E

(1)单独不能推出y – x为正

(2)---> y-x=2y-1

(1)+(2)不能推出y – x为正

如果MM做TTGWD,下面这个帖子必看哦

http://forum.chasedream.com/dispbbs.asp?boardID=22&ID=184062&page=1

晕! 37题都不用解答了. 林姐姐魅力非凡啊!