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标题: 请大牛们帮我分析一下(我认为就是选择C,可是答案选择E) [打印本页]

作者: dongziyuan 时间: 2007-12-27 17:05 标题: 请大牛们帮我分析一下(我认为就是选择C,可是答案选择E)

What is the ratio of the average (arithmetic mean) height of students in class X to the average height of students in class Y?

(1) The average height of the students in class X is 120 centimeters.

(2) The average height of the students in class X and class Y combined is 126 centimeters.

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.

作者: tengfeieric 时间: 2007-12-27 17:42

逻辑版

作者: EquityBeta 时间: 2007-12-28 06:28

同问！！

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