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Past assessments of theBrazilian rain forest have used satellite images to tally deforested areas,where farmers and ranchers have clear-cut and burned all the trees, but suchwork has not addressed either logging, which is the removal of only selectedtrees, as well as surface fires, burning down individual trees but do notdenude the forest. A. which is the removal of only selected trees, as well assurface fires, burning B. which removes only selected trees, or surface fires thatburn C. which removes only selected trees, along with surface firesthat burn D. removing only selected trees, or surface fires, burning E. removing only selected trees, as well as surface fires thatburn
答案是B.
为什么D不对呢 | 
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发表于 2014-4-18 11:13:11
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