One of the driving forces behind the recent prevalence of customer innovation is
A. the evolution of sporting equipment.
B. the development of Internet technology.
C. the motivation of making money.
D. people's advocacy of innovation.
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The word "rapport" (Sentence 1, Paragraph 1) probably means______.
A. belief
B. harmony
C. relationship
D. connection
Which of the following is true, according to the passage？
A. Current rockets are vulnerable and unstable.
B. New propulsion system has been developed.
C. People consider loser beams as a possible solution to developing new propulsion system.
D. At present, nuclear energies can be used in propulsion systems.
According to the passage, all of the following are true about isolette EXCEPT______.
A. it is an electronically equipped glass-enclosed incubator with portholes and sensors inside
B. it functions as "artificial womb"
C. sensors inside make the baby look like a miniature astronaut
D. portholes in isolette allow a doctor to regulate the body temperature and oxygen supply of an infant
A．largeB．enormousC．poisonousD．dangerous
A. large
B. enormous
C. poisonous
D. dangerous
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