单项选择题

A humanlike robot developed has the ability ______.

A．to speak and hear
B．to solve problems
C．to see and feel
D．the passage doesn't say
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单项选择题
A．16 years ago.B．In 1873.C．60 years after the law-making.D．In 1930’s.
A．16 years ago.
B．In 1873.
C．60 years after the law-making.
D．In 1930’s.
单项选择题
What does the passage mainly discuss
A．The production of solar light and heat.
B．The physical and chemical nature of life.
C．The conversion of hydrogen to helium.
D．Radiation in the x-ray part of the spectrum.
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