2. 外语
  3. A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would pr

A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would pr

admin2012-08-03  49
问题 A bridge would cost far more than a tunnel, but you would be able to go by rail or by car on a bridge, whereas a tunnel would provide a rail link only.
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答案建桥的成本比建隧道高得多，但是在桥上你可以乘火车或者开车，而隧道却只能行驶火车。
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