求助题号问题+gwd02-11

我下载的gwd跟精华里面的讨论连接的题号严重不同

我的第一套竟然是链接里的第十套....找了半天也没找到为什么，求达人指点下

Q11:

Is the sum of the integers x and y a prime number?

(1)     x is an even prime number.

(2)     y is a prime number between 10 and 20.

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

为什么答案是E？

（1）x的值只能为2

（2）若y=11

x+y is a prime number

why choose E??

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

阿~谢谢斑竹~~

看来是我找的太不仔细了~