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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.
a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing
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
a phenomenon occurring not just because of drugs that are becoming more expensive but because of doctors having also written
which occurred not just because drugs are becoming more expensive but doctors are also writing
which occurred not just because of more expensive drugs but because doctors have also written
Many entomologists say that campaigns to eradicate the fire ant in the United States have failed because the chemicals that were used were effective only in wiping out the ant’s natural enemies, which made it easier for them to spread.
which made it easier for them
which makes it easier for it
thus making it easier for them
thus making it easier for the ant
thereby, it was made easier for the ant
这里的IT是什么用法啊 ?
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发表于 2004-6-18 13:08:00
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