单项选择题

Glassmaking was the first major industry in the United States.

A．profitable
B．productive
C．sizable
D．specialized
<上一题 目录 下一题>
热门 试题

单项选择题
Structurally,the inside of early Christian churches was simple.
A．layout
B．design
C．interior
D．content
单项选择题
Enamel,the hardest substance in a human being's body,covers the entire crown of the tooth.
A．whole
B．inseparable
C．superficial
D．main
相关试题