患儿，男，1岁，平常体重10kg，1天来腹泻伴中度脱水，该患儿液体

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问题单项选择题

患儿，男，1岁，平常体重10kg，1天来腹泻伴中度脱水，该患儿液体丢失约为（）

A.300ml

B.400ml

C.750ml

D.1200ml

E.2000ml

答案

参考答案：C

选择题

You can't imagine _____when they received these nice Christmas presents.

A．how they were excited

B．how excited they were

C．how excited were they

D．they were how excited

单项选择题

关于《几何原本》，下列说法错误的是（）。

A、《几何原本》的写作地点在希腊

B、《几何原本》是关于数学和几何学的专著

C、《几何原本》共有13卷组成

D、《几何原本》大约成书于公元前三百年