Passage 2
What might driving on an automated highway be like? The answer depends on what kind of system is ultimately adopted. Two distinct types are on the drawing board. The first is a specialpurpose lane system, in which certain lanes are reserved for automated vehicles. The second is a mixed traffic system: fully automated vehicles would share the road with partially automated or manually driven cars. A special-purpose lane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway capacity.
Under either scheme, the driver would specify the desired destination, furnishing this information to a computer in the car at the beginning of the trip or perhaps just before reaching the automated highway. If a mixed traffic system was in place, automated driving could begin whenever the driver was on suitably equipped roads. If special-purpose lanes were available, the car could enter them and join existing traffic in two different ways. One method would use a special onramp. As the driver approached the point of entry for the highway, devices installed on the roadside would electronically check the vehicle to determine its destination and to ascertain that it had the proper automation equipment in good working order. Assuming it passed such tests, the driver would then be guided through a gate and toward an automated lane. In this case, the transition from manual to automated control would take place on the entrance ramp. An alternative technique could employ conventional lanes which would be shared by automated and regular vehicles. The driver would steer onto the highway and move in normal fashion to a “transition” lane. The vehicle would then shift under computer control onto a lane reserved for automated traffic (The limitation of these lanes to automated traffic would, presumably, be well respected, because all trespassers could be swiftly identified by authorities.).
Either approach to joining a lane of automated traffic would harmonize the movement of newly entering vehicles with those already traveling. Automatic control here should allow for smooth merging, without the usual uncertainties and potential for accidents. Once a vehicle had settled into automated travel, the driver would be free to release the wheel, open the morning paper or just relax.
We learn from the first paragraph that two systems of automated highways ________.
文章第一段第三句提到“Two distinct types are on the drawing board.”。由此可知， 两种自动化高速公路系统正在被设计。故选A。
A special-purpose lane system is probably advantageous in that ________.
文章第一段最后一句提到“A special-purpose lane system would require more extensive physical modifications to existing highways, but it promises the greatest gains in freeway capacity.”。由此可知，专用车道系统的优势在于能够保证有更多的车道是自动化汽车专用的。故选D。
The drivers need to _____ to work well under the two traffic systems.
文章第二段第一句提到“Under either scheme, the driver would specify the desired destination, furnishing this information to a computer in the car at the beginning of the trip or perhaps just before reaching the automated highway.”。由此可知，在两种系统下，司机都应当在行驶之前或进入自动化高速公路之前，在车上的电脑上输入终点。故选B。
We know from the passage that a car can enter a special-purpose lane ________.
文章第二段中间部分提到“Assuming it passed such tests, the driver would then be guided through a gate and toward an automated lane.”由此可知，经过测试之后，汽车才能通过一扇门，进入自动化车道。故选C。
When driving in an automated lane, the driver ________.
文章最后一段最后一句提到“Once a vehicle had settled into automated travel, the driver would be free to release the wheel, open the morning paper or just relax.”。由此可知，汽车驶入自动化车道之后，司机就不需要握着方向盘了，可以读早报或者放松一下。故选D。