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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热门试题

单项选择题

What is one reason Canadians began to immigrate to Maine during the 1800s ？（）

A．Maine was less influenced by the French government.
B．Maine had better employment opportunities.
C．Maine was politically stable.
D．Marine had a better climat

单项选择题

What can be inferred about the including Maine and Quebec during the early 1800s ？（）

A．The area was economically unified.
B．The authorities were unable to enforce law and order.
C．The two governments fought for control of the area.
D．Most of the people living there spoke only Frenc