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题库 / Prep2007E2-DS-54
If y is an integer and y = |x| + x, is y = 0 ?
(1) x < 0
(2) y < 1
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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y是整数...没考虑到这个条件。做题还是要仔细，把每个条件都要考虑到。
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