Hydrogen, which is ______than oil, is pretty easy to produce and does no harm to

游客2023-10-25  28

问题 Hydrogen, which is ______than oil, is pretty easy to produce and does no harm to the environment.

选项 A、much energy more abundant source
B、an energy source more abundant
C、a much more energy abundant source
D、a much more abundant energy source

答案 D

解析 energy source意为“能源”,此名词词组前用abundant修饰,表示“丰富的能源”。abundant前又由比较级much more修饰,从而与空格后的than呼应,因此答案为D。
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