单项选择题

Death ensued as a result of suffocation.

A．heart failure
B．an accident
C．disease
D．asphyxiation
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单项选择题
It is difficult to discern the sample that is on the slide unless the microscope is adjusted properly.
A．overlook
B．disclaim
C．discard
D．detect
单项选择题
She got used to his manner of speaking soon.
A．had been used To
B．would be used to
C．became accustomed to
D．used to
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