单项选择题

U.S. presidents normally serve a(n) （） term.

A．two-year
B．four-year
C．six-year
D．eight-year

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单项选择题
（）is the capital of Canada.

A．Vancouver
B．Ottawa
C．Montreal
D．York
单项选择题
The opening quotation from Margaret Mead sums up a relationship between man and woman which the author （）

A．approves of
B．argues is natural
C．completely rejects
D．expects to go on changing
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