单项选择题

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

A．Increasing upper body strength.
B．Discussing popular climbing sites.
C．Selecting the necessary equipment.
D．Finding a climbing partner.
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填空题
Going to bed earlier, you may be frustrated by body’s internal biological clock in keeping you ______.
单项选择题
A．She should follow the human nature.B．Strangers are nothing to be afraid of.C．Feeling nervous is nothing improper.D．She should accept strangers’ presents naturally.
A．She should follow the human nature.
B．Strangers are nothing to be afraid of.
C．Feeling nervous is nothing improper.
D．She should accept strangers’ presents naturally.
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