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单项选择题
A．Working as a tourist guide.B．Helping in a restaurant.C．Working as a shop assistant.D．Looking after a laboratory.
A．Working as a tourist guide.
B．Helping in a restaurant.
C．Working as a shop assistant.
D．Looking after a laboratory.
单项选择题
A．Steel cables.B．Guide rails.C．An open carriage.D．Strong ropes.
A．Steel cables.
B．Guide rails.
C．An open carriage.
D．Strong ropes.
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