单项选择题

Questions 17-19 are based on the passage you’ve just heard. When did the greatest numbers of immigrants reach the U. S.

A．From 1818 to 1914.
B．From 1873 to 1880.
C．From 1840 to 1940.
D．From 1880 to 1914.

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单项选择题

单项选择题

Questions 17-19 are based on the passage you’ve just heard. When did the greatest numbers of immigrants reach the U. S. 您的浏览器不支持 audio 元素。