单项选择题

The second paragraph suggests that()

A. most Americans are polite
B. people who are polite are welcome
C. casual clothing makes others uncomfortable
D. American students are impolite to their teachers

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单项选择题

Where can you find this passage in a newspaper()

A. Economy
B. Science.
C. Food & Nutrition
D. Fashion

单项选择题

24()

A.ways
B.conditions
C.stages
D.orders