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Scientists who studied the famous gold field known as Serra Pelada concluded that the rich lode was not produced by the accepted methods of ore formation but that swarms of microbes over millions of years concentrated the gold from jungle soils and rivers and rocks.
A. not produced by the accepted methods of ore formation but that swarms of microbes over millions of years
B. not produced by the accepted methods of ore formation but instead swarms of microbes over millions of years that
C. not produced by the accepted methods of ore formation but swarms of microbes over millions of years that
D. produced not by the accepted methods of ore formation but by swarms of microbes that over millions of years
E. produced not by the accepted methods of ore formation but that swarms of microbes over millions of years
虽然结构是not but对称，但是methods of ore formation和swarms of microbes怎么对称呢？ 这题当时纠结好久...请高手指教！ |
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发表于 2012-5-18 20:38:26
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