除了肺呼吸外，还有副膀胱辅助呼吸的爬行动物是（）。A、石龙子 B、蛇类 C、壁虎

社会再生产包括四个方面，其中起决定作用的是 [      ]

A、直接的生产过程

B、直接的交换过程

C、直接的消费过程

D、直接的分配过程

矩形ABCD中的顶点A、B、C、D按顺时针方向排列,若在平面直角坐标系内, B、D 两点对应的坐标分别是（2, 0）, (0, 0),且 A、C两点关于x轴对称.则C 点对应的坐标是

A、（1, －2）       B、 （－1, 1） C、（1,-1） D、（, －） 

既可宣肺，又能利水的药物是

A．细辛

B．生姜

C．麻黄

D．白芷

E．葛根

小学教育目的对小学教育活动有哪些指导意义?

先有哈佛，后有美利坚合众国，这说明了哈佛在美国历史上的地位。( )

A. The fact that Harvard was founded before the United States of America testifies to its position in the American history.
B. Harvard was founded at first, then was the United States of America. This proves that Harvard is quite important in the United States' history.
C. The fact that the United States of America was founded before Harvard testifies to its position in the American history.
D. The United States of America was founded at first, then was Harvard. This proves that Harvard is quite important in the United States' history.