单选题：The general topic of the passage is__________

题目内容：

The general topic of the passage is__________ A．American culture
B．American society
C．Americans' activities
D．Americans' personality

参考答案：

答案解析：

Respiration plays a key role__________

Respiration plays a key role__________A．by keeping its original shape and colou

分类：卫生类题型：单选题

Paragraph 5__________A．Control of Respiration B．Beauty of Fresh Cut Flowers C．Ro

分类：卫生类题型：单选题

We shouldn’t treat children as peers or friends，but guide them in making their

分类：卫生类题型：单选题

The author sees safety initiatives as part of the problem because__________A．the

分类：卫生类题型：单选题

He does nothing that violates the interests of the collective.A．runs for B．runs

分类：卫生类题型：单选题