单项选择题

57（）

A．a
B．an
C．one
D．another

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热门试题

单项选择题

The process of thinking and that of listening to music are similar in that （）

A．both are mental acts
B．muscles participate in both processes
C．both processes are performed by the entire body
D．we derive equal enjoyment from them

单项选择题

Where were shells used as money in history（）

A．In the Philippines.
B．In China.
C．In Africa.
D．We don’ t know.