北京市海淀区2015
高考英语阅读理解一轮巩固练习（2）及答案阅读理解。阅读下列四篇短文，从每小题后所给的a,b,c或d四个选项中，选出最佳选项。 as the railroads and the highways shaped the american west in the past centuries, a new electrical generating (发电) and transmission (输送) system for the 21st century will leave a lasting mark on the west, for b
