2. 外语
  3. A. marking B. since C. nuisance D. arrive E. profound F. signs G. explosion H. worry

A. marking B. since C. nuisance D. arrive E. profound F. signs G. explosion H. worry

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问题     A. marking        B. since        C. nuisance        D. arrive        E. profound
    F. signs          G. explosion    H. worry           I. though        J. passing
    K.decreased       L. appeared     M. drop off        N. survive       O. businesses
    The arrival of the mass-produced car, just over a century ago, caused a(n)【C1】________ of business creation. First came the makers of cars and all the parts that go into them. Then came the garages, filling stations and all sorts of other car-dependent【C2】________: car parks, motels, out-of-town shopping centres.
    Now another revolution on wheels is on the horizon: the driverless car. Nobody is sure when it will【C3】________. Google, which is testing a fleet of autonomous cars, thinks in maybe a decade, others reckon longer. And, when it does, the self-driving car, like the ordinary kind, could bring【C4】________ change.
    Just imagine. It could, for a start, save the motor industry from stagnation. Carmakers are anxious about【C5】________ that smartphone-obsessed teenagers these days do not rush to get a driving licence and buy their first car, as their parents did. But once they are spared the trouble and expense of taking lessons and【C6】________ a test, young adults might rediscover the joys of the open road. Another【C7】________ for the motor industry is that car use seems to be peaking in the most congested cities. Yet automated cars would drive nose-to-tail, increasing the capacity of existing roads; and since they would be able to【C8】________ their passengers and drive away, the lack of parking spaces in town might not matter so much.
    All these trends will affect the car business. But when mass-produced cars【C9】________. they had an impact on the whole of society. Electronics and software firms will be among the winners: besides providing all the sensors and computing power that self-driving cars will need, they will enjoy strong demand for in-car entertainment systems,【C10】________ cars’ occupants will no longer need to keep their eyes on the road.
【C9】
选项
答案L
解析 此处需要填不及物动词，作从句的谓语，后面主句用的是过去时(they had…)，可知空格处应填入动词过去式。词库中有appeared和decreased，第二段最后一句提到自动驾驶汽车大量生产时将对社会有深远影响。所以此处填appeared“出现”。
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