单项选择题

A．They will have to take a different bus.
B．The trip is too dangerous.
C．They will have to wait.
D．There is a problem with the bus.
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单项选择题
Which of the following statements is true according to Peter Watson in this passage
A．There have been no innovations at all in the fifty years since 1950.
B．Most scientific research is only continuation of the previous studies since 1950.
C．The advanced technologies are only small things that have not changed the way we think.
D．We actually haven’’ t made any progress in the past 50 years because of fewer innovations.
单项选择题
M
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