单项选择题

According to the passage, energy is released in the Sun when ______.

A．helium atoms bind with each other
B．gamma radiation escapes from the spectrum
C．radiation is absorbed by helium
D．nuclei of hydrogen atoms collide
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单项选择题
We can infer from the passage ______.
A．an intelligent robot will replace human workers in the future
B．an intelligent robot cannot replace human workers in the future
C．an intelligent robot can do their work good and fast without any mistakes in the future
D．none of them
单项选择题
A smartest human mind can do mathematical problems ______ than a simple computer. A) much slower C) a little faster B) much faster D) a little slower
A．A smartest human mind can do mathematical problems ______ than a simple computer.
B．much slower
C．much faster
D．a little faster
E．a little slower
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