单项选择题

They ______ because the light's on!

A．must have gone out
B．can't have gone out
C．mustn't have gone out
D．can't go out
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单项选择题
Poor knowledge of the market and lack of experience ______ his failure in investment.
A．resulted in
B．resulted from
C．brought in
D．brought from
单项选择题
Which statement about Vesalius is most probably FALSE
A．He risked imprisonment by doing research on human bodies.
B．He thought he could get good medical training.
C．He was very popular with his professors.
D．He recognized the limitations of Galen's work.
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