We learn from the first paragraph that two systems of automated highways______. We know from the passage that a car can enter a

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问题 We learn from the first paragraph that two systems of automated highways______.
We know from the passage that a car can enter a special-purpose lane______.

选项 A、by smoothly merging with cars on the conventional lane
B、by way of a ramp with electronic control devices
C、through a specially guarded gate
D、after all trespassers are identified and removed

答案B

解析 细节题。根据文章第二段第三、四、五句:“如果使用特殊目的的车道……一种方法是使用特殊的入口引道。当司机接近高速公路入口处时,安装在道边的电子装置会检测车辆的目的地并搞清是否有能工作良好的自动化装置。”故B与此符合,是正确答案。
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