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. - to be huge reservoirs of energy, possibly causing sea floor instability, and
- to be huge reservoirs of energy, possibly causing sea floor instability, and even as
- as huge reservoirs of energy, possibly causing sea floor instability, and
- as huge reservoirs of energy, and the possible cause of sea floor instability,
- as huge reservoirs of energy, as possible causes of sea floor instability, and even as
参考答案是A,但是疑问重重.... 1.A的逻辑意思有问题的 2.causing 可能会有歧义修饰Gas hydrates 本人感觉E是个很正确的结构,as...as...and even as 逻辑意思表达,语法都很清楚 OPEN TO DISSCUSSION
[此贴子已经被作者于2006-9-10 16:26:02编辑过] |