单项选择题

Many scientists ______the new damage to the forests to be the result of higher levels of pollution.

A．resumed
B．perfumed
C．presumed
D．consumed
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单项选择题
This could be the result of laziness or______ which would lose him his customers or his job.
A．integrity
B．denial
C．deduction
D．incompetence
单项选择题
The English language contains a(n)______ of words which are comparatively seldom used in ordinary conversation.
A．altitude
B．latitude
C．multitude
D．attitude
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