2. 外语
  3. At the beginning of the 20th century the railroads were used to【B1】______everything. Powerful railroad tycoons made【B2】______wit

At the beginning of the 20th century the railroads were used to【B1】______everything. Powerful railroad tycoons made【B2】______wit

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问题     At the beginning of the 20th century the railroads were used to【B1】______everything. Powerful railroad tycoons made【B2】______without having to cater to the customers. But by 1970,the railway industry was beset with problems. Cars and trucks were taking all the new business. And even so the railway industry remained【B3】______to customers. Also many regulations kept the railway industry from adjusting to【B4】______market. But in 1980, the railway industry entered the modem【B5】______when a bill was passed that allowed railroad companies to make quick adjustments to fees and practices. Companies reduced their lines by one third and used fewer【B6】______. They also took steps to【B7】______damage to product. And to【B8】______their shipping capacity by stacking freight containers on railroad cars.
    To accommodate these miler loads, underpasses and tunnels were enlarged. The image of the railway industry has changed dramatically Today companies【B9】______. The railroad safety record is also strong.【B10】______.Trains also come out ahead of the trucks【B11】______. And railroading does not wear out highways as trucks do.
【B11】
选项
答案on environmental grounds because they give off only one tenth to one third the pollution that is emitted by trucks
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