单项选择题


Questions 19 to 22 are based on the conversation you have just heard.

A．They don’t get rid of flabby arms.
B．They can damage arm muscles.
C．They aren’t acceptable to most people.
D．They can raise one’s blood pressure.
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单项选择题
A．Before the man bought a new house.B．After the man and the woman talked about the purchase for the first time.C．After the man bought a new house.D．After the man has given up looking for a new house.
A．Before the man bought a new house.
B．After the man and the woman talked about the purchase for the first time.
C．After the man bought a new house.
D．After the man has given up looking for a new house.
单项选择题
Nature’s ways of maintaining the balance are ______.
A．simple and easily understood
B．intricate and not easily understood
C．mysterious and unknown
D．everchanging
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