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mastering
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单项选择题
A．For companionship.B．For amusement.C．For protection against robbery.D．For hunting.
A．For companionship.
B．For amusement.
C．For protection against robbery.
D．For hunting.
单项选择题
A．New technology is being employed.B．Advertisements are being widely used.C．New designs are being adopted.D．More synthetic materials are being introduced.
A．New technology is being employed.
B．Advertisements are being widely used.
C．New designs are being adopted.
D．More synthetic materials are being introduced.
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