the black car___as the white one

问题描述:

the black car___as the white one
A,doesn't run as fast B,runs not so fast c,runs not as fast D,doesn't run so faster
选哪个 说明下理由

A
not as / so + 形容词/ 副词+ as ……不如……
RUN 是实义动词,否定句要加助动词DOESN‘T ( 主语第三人称单数)
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