单项选择题

A．Caller and operator.
B．Salesman and customer.
C．Airline agent and customer.
D．stewardess and passenger.
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单项选择题
A．No-smoking, double bed and quiet.B．No-smoking, single bed and quiet.C．Smoking, single bed and quiet.D．Smoking, double bed and quiet.
A．No-smoking, double bed and quiet.
B．No-smoking, single bed and quiet.
C．Smoking, single bed and quiet.
D．Smoking, double bed and quiet.
单项选择题
A．How to gain muscles.B．How to be realistic.C．How to make one’s goal.D．How to use mind to keep fit.
A．How to gain muscles.
B．How to be realistic.
C．How to make one’s goal.
D．How to use mind to keep fit.
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