单项选择题

The designer has applied for a ______ for his new invention.

A．tariff
B．discount
C．version
D．patent
<上一题 目录 下一题>
热门 试题

单项选择题
The captured criminals were ______ in chains through the streets.
A．exhibited
B．displayed
C．paraded
D．revealed
单项选择题
It was a very difficult examination, ______ he passed it with distinction.
A．consequently
B．moreover
C．nevertheless
D．likewise
相关试题