单项选择题

A．Every quarter of fifty minutes.
B．Every quarter of half an hour.
C．Every quarter of an hour.
D．Every five minutes of an hour.
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单项选择题
Those against oil drilling in ANWR argue that________.
A．it will drain the oil reserves in the Alaskan region
B．it can do little to solve U.S. energy problems
C．it can cause serious damage to the environment
D．it will not have much commercial value
单项选择题
A．He is starting the course late.B．The subject is difficult for him.C．The professor is very reserved.D．The book is difficult to read.
A．He is starting the course late.
B．The subject is difficult for him.
C．The professor is very reserved.
D．The book is difficult to read.
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