哪辆汽车在经过校车前必须减速？

114. 哪辆汽车在经过校车前必须减速？

单选题正确率: 70%

A. 汽车A应减速至40公里/小时 B. 两辆汽车都应减速至40公里/小时 C. 汽车A应减速至20公里/小时 D. 两辆汽车都应减速至20公里/小时

恭喜，答对了！ {{vm.result.explain}}

答案不正确！ {{vm.result.explain}}

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