GWD—5—Q39:
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
这题我看了很久。从句意上C的not...but...表示:不是...而是...。好象更接近题意。但对其中的occurring 和doctors having also written有又不太确定。
请指教! |