单选题 Is x an integer?(1) x2 is an integer. (2) x/2 is not an integer.

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.

【正确答案】 E

【答案解析】Determine if x is an integer.(1) It is given that x2 is an integer. If, for example, x2 = 49, then x is an integer. However, if x2 = 5, then x is not an integer; NOT sufficient.(2) It is given that x/2 is not an integer. If, for example, x = 7, then x/2 is not an integer, butx is an integer. However, if x =