单项选择题

A．They reduce a person’ s appetite.
B．They make a person less persistent in face of trouble.
C．They make a person’ s nervous system weak.
D．They make a person more vulnerable to disease.
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单项选择题
A．To give an example of natural shapes.B．To describe early sculpture.C．To illustrate their use as tool.D．To demonstrate their role as decorative objects.
A．To give an example of natural shapes.
B．To describe early sculpture.
C．To illustrate their use as tool.
D．To demonstrate their role as decorative objects.
单项选择题
A．He agrees with the woman.B．He can’t agree with the woman.C．He prefers not to agree to it..D．He doesn’t agree with the woman.
A．He agrees with the woman.
B．He can’t agree with the woman.
C．He prefers not to agree to it..
D．He doesn’t agree with the woman.
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