单项选择题

In London, how does they solve the problem of the traffic congestion（）

A．They take a completely-free bus service.
B．They experimented a very cheap bus service.
C．Part of the street is for buses only.
D．They closed the streets to cars.

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单项选择题

59（）

A. How old are they
B. What does he do
C. and brothers
D. but no brothers
E. What do they do
F. is studying
G. Does she work
H. She is a lawyer

单项选择题

Which statement is not mentioned in the passage（）

A．Tips are not usually included in the total check.
B．A 15 percent tip in large cities indicates satisfactory service.
C．People tip waiters and waitresses.
D．People always put tips on the tabl