扫描二维码，直接登录
题库 / Prep2007E2-DS-128
Is ~$y< \frac{x+z}{2}$~ ?
(1) y - x < z - y
(2) ~$z-y> \frac{z-x}{2}$~
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.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
对啊，做这道题的时候，我也很疑惑，总感觉出错了。后来查了查，原题中条件(2)应该是 >号，这样就选D了。登录 或 注册 后可以参加讨论