单项选择题

A．More than fifty percent.
B．About forty percent.
C．At least ten percent.
D．Twenty or thirty percent.
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单项选择题
A．He will drive his grandmother to the airport.B．He will meet his grandmother at the airport.C．He will send his grandmother to a wedding party.D．He will take his grandmother to the hospital.
A．He will drive his grandmother to the airport.
B．He will meet his grandmother at the airport.
C．He will send his grandmother to a wedding party.
D．He will take his grandmother to the hospital.
单项选择题
A．Robots can’t help us with our study.B．We need to learn to operate and control robots.C．Robots can’t study themselves.D．Otherwise we have nothing to do.
A．Robots can’t help us with our study.
B．We need to learn to operate and control robots.
C．Robots can’t study themselves.
D．Otherwise we have nothing to do.
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