单项选择题

Oil is an important（）material which can be processed into many different products, including plastics.

A. raw
B. bleak
C. flexible
D. fertile

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单项选择题
It is said that one hundred dollars can hardly （） one night at a top hotel in Shanghai

A. pay
B. cover
C. spend
D. cost
单项选择题
The Water Prize is an international award that ______ outstanding contributions towards solving global water problems.
A. recognizes
B. requires
C. releases
D. relays
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