单项选择题

The White brothers______ the design of the first successful motor-powered plane.

A．confronted
B．concealed
C．converted
D．conceived
<上一题 目录 下一题>
热门 试题

单项选择题
To give you a general idea of our products, we enclose the catalogues showing various products handled by us with detailed______ and means of packing.
A．specimens
B．inspections
C．paraphrases
D．specifications
单项选择题
Nationas are classified as ______ when seven percent or more of their people have reached 65.
A．aging
B．being aging
C．aged
D．being aged
相关试题