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题库 / Prep2007E1-SC-1
To meet the rapidly rising market demand for fish and seafood, suppliers are growing fish twice as fast as their natural growth rate, cutting their feed allotment by nearly half and raising them on special diets.
their natural growth rate, cutting their feed allotment
their natural growth rate, their feed allotment cut
growing them naturally, cutting their feed allotment
they grow naturally, cutting their feed allotment
they grow naturally, with their feed allotment cut
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"growing them naturally" is illogical.
in this construction, "them" (= fish) is the OBJECT of "growing". this implies that someone else must be growing the fish -- which doesn't make sense if we're talking about natural growth.
notice that the correct answer contains "they grow naturally", a more accurate description of what actually happens -- the fish just grow, by themselves.
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