单项选择题

A．Borrow some money.
B．Buy a heater.
C．Get some information.
D．Pay the rent.
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单项选择题
A．His hands were dirty.B．He would not go forward.C．He didn’t obey the rules.D．He put out his hand.
A．His hands were dirty.
B．He would not go forward.
C．He didn’t obey the rules.
D．He put out his hand.
单项选择题
A．Microwaves are strange electric waves.B．Microwaves travel in straight lines and do not follow the curve of the earth’s surface.C．There are not any wires to send microwaves.D．We must amplify microwaves in relay stations.
A．Microwaves are strange electric waves.
B．Microwaves travel in straight lines and do not follow the curve of the earth’s surface.
C．There are not any wires to send microwaves.
D．We must amplify microwaves in relay stations.
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