单项选择题

The fossil fuel would be __________ within half a century if we made no immediate actions now.

A．exhausted
B．extracted
C．exhibited
D．extinguished
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单项选择题
As the factory locates in the mountains of rich resources, it provides the neighboring with __________ metal products.
A．identical
B．equal
C．diverse
D．uniform
单项选择题
It was __________ that there is a kind of ageism in that company.
A．addressed
B．advocated
C．ascribed
D．alleged
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