[問題]29-41

[ergh]

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.

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 even as

參考答案為E

CD有人google到原文
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

天阿～～有人知道這是啥用法嗎？？一頭霧水？？

[Zaitech]

咦？『as』表身份....這裡的意思是『當作』....

然後，『and』連接，三者平衡....

是說，在研究『Gas hydrates』當作『huge reservoirs of energy』、當作『possible causes of sea floor instability』、以及當作『significant contributors to global warming』的可能性....

[A級垂耳兔]

我支持E...雖然莫老師說是A....但是參考大陸人的講義平衡法優先原則...另外我也看到原文...所以我仍然支持E...莫老師都說A答案不太平衡不好....所以答案是E