单项选择题

Along with aging, the function of tissues and organs gradually degenerate, causing disease.

A．disrupt
B．deter
C．deteriorate
D．descend
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Although I felt suspicious at first, I have come to believe what she said that day.
A．first of all
B．in the beginning
C．for a beginner
D．for the first time
单项选择题
The military move was to integrate the West German divisions into the Atlantic defense system.
A．complete
B．exclude
C．entail
D．incorporate
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