It can not be denied that the existing resources on earth will be depleted, but scientists are ______ to concede the inevitabili

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问题 It can not be denied that the existing resources on earth will be depleted, but scientists are ______ to concede the inevitability of that day, ______ that new energies can be found in the near future.

选项 A、bound... assuming
B、unprepared ... skeptical
C、hesitant... convinced
D、likely... realizing
E、eager ... hypothesizing

答案C

解析
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