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
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单项选择题
This is an ideal site for a university ______ it is far from the downtown area.
A．provided that
B．now that
C．so that
D．in that
单项选择题
Although Asian countries are generally more ______ in social customs than Western countries, there have been several notable examples of women leaders in both China and India.
A．conservative
B．confidential
C．comprehensive
D．consistent
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