单项选择题

To survive in the intense trade competition between countries, we must______ the qualities and varieties of products we make to the world-market demand.

A．improve
B．enhance
C．guarantee
D．gear
<上一题 目录 下一题>
热门 试题

单项选择题
It is not so much the language_______the cultural background that makes the book difficult to understand.
A．but
B．nor
C．as
D．like
单项选择题
Beliefs, which are typically partial, often wrong and often inconsistent, but may not be damaging to the system as a whole, are called______.
A．disbeliefs
B．misbeliefs
C．mischiefs
D．disbenefits
相关试题