这个标志是什么意思？

251. 这个标志是什么意思？

单选题正确率: 99%

A. 前方有环岛 B. 前方有回收站 C. 前方有双向交通 D. 前方有汇流交通

恭喜，答对了！ {{vm.result.explain}}

答案不正确！ {{vm.result.explain}}

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