This year the pany has produced as many cars as the year before last, but the total profits are four-fifths they were then.
A. that
B. what
C. which
D. when
网友回答
A. that
(答案→)B. what
C. which
D. when
解析：考查倍数表达。实际上也是考查表语从句，what引导表语从句what they were并在句中做were的表语。句意：今年这家公司生产的汽车和前年一样多，但是利润只有那时的五分之四。