问题补充：
---I think English is math. ---Yes, I think so.
A. much important than
B. so important as
C. as important as
D. as more important as
答案：
A. much important than
B. so important as
(答案→)C. as important as
D. as more important as
解析：句意：我认为英语像数学一样难。两者比较用比较级。important 的比较级是，more important.much可以修饰比较级，但不构成比较级。not as/so…as…不像……一样的……。指前方不像后方一样，中间加形容次或副词的原级。形容词用来修饰名词，或用作表语。根据句意及结构，故选C。
