GWD5-39新问题

shaoji

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.

1. a phenomenon that is explained not just because of more expensive drugs but by the fact that doctors are writing


2. 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


3. a phenomenon occurring not just because of drugs that are becoming more expensive but because of doctors having also written


4. which occurred not just because drugs are becoming more expensive but doctors are also writing


5. which occurred not just because of more expensive drugs but because doctors have also written

这题答案B结构没有问题,但是句义有疑惑.在2000年发生的事件,用现在进行时解释,会不会有歧义?望牛人指点.

[此贴子已经被作者于2006-1-7 15:54:24编辑过]

shaoji

shaoji

shaoji

shaoji

shaoji

wycg

B是最好的呀.五个选项里没有用过去时的呀.LZ看好哪个选项呢?

donna

后面的句子是修饰phenomenon ，一种现象，阐述的时候用一般现在时

shaoji

可是B选项里面是进行时啊?

shaoji