单项选择题

According to the author, in the nineteenth century people gradually ______.

A．emigrated to other countries
B．often settled in the West
C．tended to change the place in which they lived
D．had a higher rate of birth than ever before

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热门试题

单项选择题

The word rent (Line 9, Para. 3 ) is closest in meaning to ______.

A．returned
B．paid
C．broken
D．leased

单项选择题

The primary concern of the author in writing this passage is ______.

A．the economic development in the eighteenth century
B．economic development and social changes it caused
C．population growth in the United States
D．the increase of jobs for women