GWD Set 1 T16

efficiency

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.

a greater proportion than it was a greater proportion than a greater proportion than they have been which is greater than was so which is greater than it has been

sammen

B。A和C都是指代错误，it refer costs错，they refer costs错，要用those were才对。

fdgggd

我选B。其它比较都不对等。B可看做比较从句的省略。