下列说法中错误的是（） A．两条对角线互相平分的四边形是

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问题选择题

下列说法中错误的是（　　）

A．两条对角线互相平分的四边形是平行四边形

B．两条对角线相等的四边形是矩形

C．两条对角线互相垂直的矩形是正方形

D．两条对角线相等的菱形是正方形

答案

答案：B

单项选择题

Which of the following is NOT a reason for the creation of the Global Investment Performance Standards (GIPS standards)（）

A. to improve investment performance as managers diversify internationally.

B. the need for consistent performance measurement due to the globalization of financial markets.

C. to allow investment clients to more easily compare investment performance.

单项选择题

近年来，呈增加倾向的肿瘤是（）

A．皮肤癌

B．骨肉瘤

C．子宫癌

D．结肠癌

E．肺癌