单项选择题

A country's domestic policies ___________.

A．can not be forcibly changed by the U. N.
B．are often investigated by the U. N.
C．are often enforced by the U. N.
D．are not allowed to benefit from U.N. advice or assistance

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单项选择题

A．Because she wants to study for a test.B．Because she wants to go swimming at the student center.C．Because she has to do research in the library.D．Because she is not interested in the man.

A．Because she wants to study for a test.
B．Because she wants to go swimming at the student center.
C．Because she has to do research in the library.
D．Because she is not interested in the man.

单项选择题

A．Light rain.B．Heavy rain.C．Lightning.D．Heavy snow.

A．Light rain.
B．Heavy rain.
C．Lightning.
D．Heavy snow.