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In 2000, a mere two dozen products accounted for half the increase in spending on prescription drugs, a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing many more prescriptions for higher-cost drugs. OG86 (A) a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing (B) a phenomenon that is explained not just by the fact that drugs are becoming more expensive but also by the fact that doctors are writing (C) a phenomenon occurring not just because of drugs that are becoming more expensive but because of doctors having also written (D) which occurred not just because drugs are becoming more expensive but doctors are also writing (E) which occurred not just because of more expensive drugs but because doctors have also written
B选项正确 a phenomenon that此处是同位语存在吗？同位语中that是没有成分的，但是这里that是充当成分的，应该是定语从句？ | 
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发表于 2013-6-14 20:43:27
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