18. Plants are more efficient at acquiring carbon than are fungi, in the form of carbon dioxide, and converting it to energy-rich sugars. (A) | Plants are more efficient at acquiring carbon | | than are fungi, | (B) | Plants are more efficient at acquiring carbon | | than fungi, | (0 | Plants are more efficient than fungi at acquiring | | carbon, | (D) | Plants, more efficient than fungi at acquiring | | carbon, | (E) | Plants acquire carbon more efficiently than | | fungi,
答案是D,解释的很明白 但是我对A有个疑问,在这种为了避免歧义不能省略比较的助动词的情况下,助动词和主语的顺序有严格的规定吗? 也就是说A选项,than are fungi和than fungi are都是正确的么 |
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