英语四级
A．It contributes less to air pollution than truck industry.
B．Its competitors are inconsiderate of customers.
C．It preserves a traditional way of doing business.
D．It creates personal fortunes for investors.
【解题思路】
1．三项以it开头，一项以its开头，需先辨别所指代的对象。
2．四项多为有利因素。
结论：本题可能考查某事物的竞争优势何在。
【解析】题干问为什么铁路运输业渐渐赢得了人们的支持。短文在结尾处提到铁路行业努力提高了运输的安全性，而且在环境保护方面也更有优势，其排放的污染物仅为卡车的l／10到1／3。故选A。
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