Young as you are, you might be just smart enough to ____ her off her throne.

How were immigrants viewed by U. S. Congress in early days?A．They were of inferior races.B．They were a source of political corruption.C．They were a threat to the nation' s security.D．They were part of the nation' s bloodstream. 点击查看答案

可以完全铺满地面的正多边形不包括()

A.正方形
B.正六边形
C.正五边形
D.正三角形

点击查看答案&解析