以下是引用lindazhou在2005-8-20 19:35:00的发言:why is C incorrect? 
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
1. having done: 错误答案的标准长象 (建议仔细阅读OG), 应该在1秒钟之内排除, 除非是credit with haveing done一类的固定搭配.
2. occurring 改变句子原意. 本来是要表达现象由...来解释, 现在变成现象的发生由...来解释. 之间存在细微差别.
3. 从句意来讲, because of 强调后面跟的名词drug本身, 而by the fact that...强调整个事件. 而这个现象理应是整个事件引起, 而非单单药物本身. |