According to the passage, all of the following were true of railroads in the United States in the nineteenth century EXCEPT that
A.they connected important industrial cities
B.they were necessary to the industrialization process
C.they were expanded in a short time
D.they used relatively small quantities of natural resources
A.they connected important industrial cities
B.they were necessary to the industrialization process
C.they were expanded in a short time
D.they used relatively small quantities of natural resources
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Hóa Học lớp 12
