国家提倡自愿献血的健康公民是（）。 A.16周岁到40周岁 B.18周_爱下问搜题

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问题单项选择题

国家提倡自愿献血的健康公民是（）。

A.16周岁到40周岁

B.18周岁至28周岁

C.18周岁至45周岁

D.18周岁至55周岁

E.18周岁至60周岁

答案

参考答案：D

选择题

—What’s the weather like today?— . Good luck to you!

A．It’s a fine day

B．Be careful

C．I think so

D．Good idea

选择题

Smoking is one of the ______ causes of cancer, killing millions of people each year.[ ]

A. major

B. similar

C. commercial

D. chemical