Jimmy and Timmy are both 50 kg, that is to say, Jimmy is Timmy.A. so heavy as B. as heavy

Jimmy and Timmy are both 50 kg, that is to say, Jimmy is Timmy.
A. so heavy as
B. as heavy as
C. so heavier as
D. as heavier as

A. so heavy as (答案→)B. as heavy as C. so heavier as D. as heavier as解析：句意：吉米和蒂米两个人都重50千克，也就说吉米和蒂米一样重。表达比较级的结构通常为as+adj./adv.+as 表示“和……一样怎么样”,句型结构中只能用形容词和副词的原级形式；故选B。

我明天再问问老师，叫他解释下这个问题