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.
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单项选择题
A．They were used to prevent wild animals from attacking people.B．They were used to keep wild animals from rushing onto the road.C．They were used to prevent people from driving into forests.D．They were used to keep people from having traffic accidents,
A．They were used to prevent wild animals from attacking people.
B．They were used to keep wild animals from rushing onto the road.
C．They were used to prevent people from driving into forests.
D．They were used to keep people from having traffic accidents,
单项选择题
A．Because the early blooming would stimulate Japan’s economy.B．Because Japan’s economy turned out to have grown more rapidly than expected.C．Because he hoped that Japan’s economic performance would soon turn out to be satisfactory.D．Because he thought that the early blooming would ensure Japan’s rapid economic Growth.
A．Because the early blooming would stimulate Japan’s economy.
B．Because Japan’s economy turned out to have grown more rapidly than expected.
C．Because he hoped that Japan’s economic performance would soon turn out to be satisfactory.
D．Because he thought that the early blooming would ensure Japan’s rapid economic Growth.
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