accelerate和speed的区别?To make the car 'roar down the arcade',the driver must have _____.a.accelerated b.sped c.run d.reversed 为什么不能选b?怎么区分accelerate和speed?

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accelerate和speed的区别?To make the car 'roar down the arcade',the driver must have _____.a.accelerated b.sped c.run d.reversed 为什么不能选b?怎么区分accelerate和speed?
accelerate和speed的区别?
To make the car 'roar down the arcade',the driver must have _____.
a.accelerated b.sped c.run d.reversed
为什么不能选b?怎么区分accelerate和speed?

accelerate和speed的区别?To make the car 'roar down the arcade',the driver must have _____.a.accelerated b.sped c.run d.reversed 为什么不能选b?怎么区分accelerate和speed?
B的话要加up

accelerate 加速
speed 作动词加速时，是不及物动词，要加up
accelerate有两个搭配
accelerate to 加速到（加速到具体一个数值）
accelerate by 加速至（加速的幅度）
speed 就是一般的加速，一般是指车速

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