Q29:

Most of Portugal’s 250,000 university students boycotted classes in a one-day strike to protest a law that requires them to contribute $330 a year toward the cost of higher education, previously paying $7 per year.

1. year toward the cost of higher education, previously paying $7 per year
2. year toward the cost of higher education, for which was previously paid $7 per year
3. year, compared to the previously $7 per year, toward the cost of higher education
4. year toward the cost of higher education, instead of the $7 per year required previously
5. year as opposed to the $7 per year required previously for the cost of higher education

有人说是D有人说是E，到底是哪个？谁能回答我。并且给个合理解释。

我认为是D

E中oppose to和boycotte有语义重复,啰嗦

但是似乎这两个词的描述对象不相同吧.不能算语意重复.

请问D的instead of 用的合理吗?

言下之意就是E罗？解释一下。其他牛人还有更多见解?

contribute $300 a year (toward or for) the cost of higher education

toward和for比较哪个好，还是无所谓，不是本题的考点？