单项选择题


A．scattering
B．preserving
C．discarding
D．recycling
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单项选择题
A．affectedB．employedC．burnedD．changed
A．affected
B．employed
C．burned
D．changed
单项选择题
A．approvedB．dischargedC．admittedD．disposed
A．approved
B．discharged
C．admitted
D．disposed
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