单项选择题

The United States is composed of ______states and one district, the District of Columbi

A． 50B. 51C. 48D. 49
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单项选择题
What do you think of the black people in the U. S.
A．They form the most numerous minority.
B．They get married younger than the whites.
C．They have a higher death rate than the whites.
D．Most of them living in the countrysid
单项选择题
Macrolinguistics includes the following branches except______.
A．psycholinguistics
B．sociolinguistics
C．theoretical linguistics
D．mental linguistics
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