問題詳情

Passage # 48-50    Despite the recent pair of fatal crashes involving self-driving cars, there’s wideagreement that autonomous vehicles will sharply reduce the number of people whodie in motor vehicle accidents. In the U.S. alone, traffic accidents claim more than30,000 lives a year; experts say that by the middle of this century, that toll could fallby up to 90 percent.    Eventually, driverless cars will take human motorists out of the equation entirely.When that happens, fewer traffic fatalities will be only the most obviousconsequence. Because automobiles are so central to our society and nationaleconomy — and so much a part of everyday life — the switch to autonomousvehicles is likely to alter our lives in strange and remarkable ways.    Driverless cars will bring big changes to city infrastructure. Since driverless carswill move with greater precision than human-driven vehicles, streets could benarrower, with more space set aside for pedestrians and cyclists, according to areport issued last fall by the National Association of City Transportation Officials.    Crossing the street may be easier, too. With driverless cars watching out forpedestrians, people may be able to cross the streets where it makes sense, ratherthan trek a mile to the nearest stoplight. Driverless cars will also make for saferintersections, and perhaps even do away with traffic lights, which, of course, cameabout before cars themselves knew how to avoid collisions.    With more cars spending more of their time on the road rather than parked,there will be less need for parking lots and parking garages. That could free up spacefor other uses, including parks.    Driverless cars promise to transform the lives of people who have troublegetting around because of illness, old age, or disability. For “all those folks, this isbasically a dream come true,” an engineer says of a world in which driverless cars areubiquitous.
48. What might be the estimated annual death toll for traffic accidents in the U.S. inthe middle of the century, according to the author?
(A) 30,000
(B) 27,000
(C) 3,000
(D) 2,700

參考答案

答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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