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标题: gwd 12-15 答案A? why not D? [打印本页]

作者: uniqueness 时间: 2005-3-18 12:59 标题: gwd 12-15 答案A? why not D?

Q15:

Is xy + z = z, is absolute value(x-y) >0?

(1) x ≠ 0

(2) y = 0

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: A

Why not D?

作者: uniqueness 时间: 2005-3-21 07:25

thanks!

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