单项选择题

A．Steel cables.
B．An open carriage.
C．Guide rails.
D．Strong ropes.
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单项选择题
A．Because it is part of his study.B．Because his uncle needs help.C．Because he wants to visit the seaside.D．Because he has to earn for his tuition.
A．Because it is part of his study.
B．Because his uncle needs help.
C．Because he wants to visit the seaside.
D．Because he has to earn for his tuition.
填空题
M
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