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．The man should pay for the dinner.B．The woman is going to treat the man.C．They should go Dutch.D．The man should be more generous.
A．The man should pay for the dinner.
B．The woman is going to treat the man.
C．They should go Dutch.
D．The man should be more generous.
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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