单项选择题

A．Wearing arm weights while you are swimming.B．Jogging ……

Questions 22 to 25 are based on the conversation you have just heard.

A．Wearing arm weights while you are swimming.
B．Jogging vigorously in one place for a long time.
C．Using bicycles that require you use both your arms and legs.
D．Walking slowly while swinging your arms back and forth.

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单项选择题A．At a restaurant.B．At a grocery store.C．At a friend’s house.D．At a supermarket.

A．At a restaurant.
B．At a grocery store.
C．At a friend’s house.
D．At a supermarket.

单项选择题The best place to stay for thrifty travelers is______.

A．dirty but cheap hostels
B．cheap houses of students
C．clean and safe hostels
D．hotels with room service