GWD十三套---1：7

A recent review of pay scales indicates that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times in 1980.

1. that CEO’s now earn an average of 419 times more pay than blue-collar workers, compared to a ratio of 42 times
2. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, a ratio that compares to 42 times
3. that, on average, CEO’s now earn 419 times the pay of blue-collar workers, as compared to 42 times their pay, the ratio
4. CEO’s who now earn on average 419 times more pay than blue-collar workers, as compared to 42 times their pay, the ratio
5. CEO’s now earning an average of 419 times the pay of blue-collar workers, compared to the ratio of 42 times

答案是B，但是为什么用compares呢？不是说比较都用被动吗？

Q16:

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

1. a greater proportion than it was
2. a greater proportion than
3. a greater proportion than they have been
4. which is greater than was so
5. which is greater than it has been

为什么是C，我觉得是A啊，因为我认为IT是指proportion，选C是不是把THEY指代成COSTS啊，到底是什么呢？