Jerry doesn't run ( as / so ) quickly( as ) Bob at the school sports meeting.
分析
比较级+than ……比……更……
=
not as / so +原形+ as …… 不如……
加油!不明白再问!答案是so······as，有什么区别吗没有，因为：not as ... as ...= not so ... as ... ……不如……第一空可填：as 也可填：so ， 但第二个空只能用as