Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.
GWD-29-Q41Gas hydrates, chemical compounds of water and natural gas, are increasingly being studied for their potential to be huge reservoirs of energy, possibly causing sea floor instability, and significant contributors to global warming.
A.to be huge reservoirs of energy, possibly causing sea floor instability, and
B.to be huge reservoirs of energy, possibly causing sea floor instability, and even as
C.as huge reservoirs of energy, possibly causing sea floor instability, and
D.as huge reservoirs of energy, and the possible cause of sea floor instability,
E.as huge reservoirs of energy, as possible causes of sea floor instability, and evenas
答案：E
我选了A，看到有的帖子上也有人说A是正确的答案
但我觉得选E的话破坏了原句的意思： 有潜力成为reservoirs of energy，（用一个现在分词做定语修饰reservoirs，表示这个储存有可能导致海平面的不稳定），和constributors of...。在这里reservoirs和constributors平行 而E虽然是很完美的平行，但总觉得一定程度上扭曲了原句的逻辑意思。
para : What they had were bits of gas hydrates--chemical compounds that are increasingly being studied for their potential as huge reservoirs of energy, as possible causes of sea floor instability, and even as significant contributors to global warming. Scientists had long speculated about them and even made them in the laboratory, but until now only a few had been seen in nature.
here, "as" is the meaning of "in the role" or "status of" as a preposition
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发表于 2010-7-31 10:23:43
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