单项选择题

When did NASA first sent astronauts to the moon

A．30 years ago
B．31 years ago
C．32 years ago
D．33 years ago
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单项选择题
What will the speakers probably do next
A．Write their lab reports.
B．Find out Professor Smith’s schedule.
C．Interview some high school students.
D．Finish their chemistry experiment.
单项选择题
What does the speaker say about the road between Main and Quebec
A．It was built by the Canadians.
B．It was built to facilitate trade.
C．The path for the road was extremely difficult to clear.
D．Hostilities between Canada and the United States caused construction delays.
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