单项选择题

There（）in that part of the country.

A．are not much industry
B．is not many industry
C．are not many industry
D．is not much industry

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填空题

A diamond or ruby is a jewelry that is often used to decorate valuable ornaments or other special objects such as rings or necklaces（）.

单项选择题

A．an instant
B．hours
C．three minutes
D．seconds