单项选择题

It can be learned from the passage that oil exploitation beneath ANWR's frozen earth ______.

A．remains a controversial issue
B．is expected to get under way soon
C．involves a lot of technological problems
D．will enable the U.S. to be oil independent

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单项选择题

Those against oil drilling in ANWR argue that ______.

A．it can cause serious damage to the environment
B．it can do little to solve U.S. energy problems
C．it will drain the oil reserves in the Alaskan region
D．it will not have much commercial value

单项选择题

What do the environmentalists mean by saying Not so fast ( Line 1, Para. 3 )

A．Oil exploitation takes a long time.
B．The oil drilling should be delayed.
C．Don't be too optimistic.
D．Don't expect fast returns.