单项选择题

Television in Dr. Hildebrand's eyes is probably

A．a powerful weapon for knowledge spreading.
B．a favorable means to promote learning.
C．something to distract people's attention
D．the embodiment of scientific and technological progress
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单项选择题
The sentence the more incredible and divergent from conventional thinking an idea is, the greater the possibilities for new twists can best be paraphrased as.
A．"the more far- fetched a thought is , the less possible it is to be wise"
B．"A good idea can often come to one s mind unexpectedly"
C．"The more conflicting an idea is from the traditional way , the more likely it is to be put into practice."
D．"The farther an idea is from the generally accepted norms , the more useful to create new possibilities."
单项选择题
The so-called virtual reality mentioned in this passage is actually.
A．a surgical tool used for operations
B．a computer system used to produce life- like illusions
C．a new kind of applications in a visual technology.
D a way to carry out operations in a visual sense
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