单项选择题

A．To search for the missing people.
B．To investigate a fire on one of the islands.
C．To look for the missing woman.
D．To rescue the British soldiers.
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单项选择题
A．He went mountain climbing last year.B．He hasn’t traveled around the world yet.C．He’s always wanted to climb that mountain.D．He definitely does not want to go.
A．He went mountain climbing last year.
B．He hasn’t traveled around the world yet.
C．He’s always wanted to climb that mountain.
D．He definitely does not want to go.
单项选择题
A．The workers on the underground platforms were replaced by machines.B．It became the first completely automatic railway in the world.C．A completely automatic line was added to its network.D．Computers began controlling the trains on the line.
A．The workers on the underground platforms were replaced by machines.
B．It became the first completely automatic railway in the world.
C．A completely automatic line was added to its network.
D．Computers began controlling the trains on the line.
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