ManyrulesgoverndriversonAmericanstreetsandhighways.Them...
问题详情:ManyrulesgoverndriversonAmericanstreetsandhighways.Themostcommononesarethespeedlimits(限制).Thespeedlimitscontrolhowfastacarmaygo.Onstreetsinthecity, thespeedlimitisusually25or35milesperthehi...