单项选择题

Questions 11 to 18 are based on the conversation you have just heard.

A．Public buses are fast and cheap.
B．Parking is becoming a big problem.
C．Subway trains are even safer than taxis.
D．Taxis ate more convenient than buses.
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单项选择题
A．It is but a dream and will never come tree.B．It is still at a trial period.C．It starts being used for the time being.D．It has been widely practiced
A．It is but a dream and will never come tree.
B．It is still at a trial period.
C．It starts being used for the time being.
D．It has been widely practiced
单项选择题
A．confidentB．hesitantC．resoluteD．doubtful
A．confident
B．hesitant
C．resolute
D．doubtful
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