It can be learned from the passage that oil exploitation beneath ANWR's frozen earthA.rema
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
A
解析: 由第二、三段内容可知,对开采ANWR的石油问题,美国石油工业部门和环保主义者各持己见。