单项选择题

Mosquitoes are only means of ______ of malari

A． transferenceB. transformationC. transitionD. transmission
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单项选择题
We should ______ with the doctor's request.
A．consult
B．conceal
C．consent
D．comply
单项选择题
The captain of the ship ______ the passengers that there was no danger.
A．insured
B．assured
C．ensured
D．secured
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