What will be probably discussed after this selection?
A.Other changes than the railway in the late 19th century AmericA.
B.The changes in the 20th century AmericA.
C.Standardized time was applied to other fields.
D.The achievements in other transportation means.

A.Other
B.
B.The
C.
C.Standardized
D.
D.The
E.

【参考答案】

A
解析：文章主题句在第一段最后一句，即“谈论19世纪后期的变化”，但在正文里只谈了铁路，所以如果还有续文，应该......

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