单项选择题

I am_______ of his methods which he spent two months researching; they seem not very scientific to me.

A．sturdy
B．skeptical
C．indefinite
D．hysterical
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单项选择题
After careful examination the doctor______ the illness of the child as pneumonia.
A．conceived
B．affirmed
C．embodied
D．diagnosed
单项选择题
He wrote a book about computer in_______ with one of his colleagues.
A．criterion
B．correspondence
C．collaboration
D．counterpart
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