单项选择题

A．By forcing them farming.
B．By affecting the quality of soils.
C．By adding chemicals and pollute the waterways.
D．By affecting the environments they live in.
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单项选择题
A．12,000.B．700,000.C．50,000.D．20,000.
A．12,000.
B．700,000.
C．50,000.
D．20,000.
单项选择题
We can infer from the passage that an employer might tolerate his secretary’’s occasional mistakes, if the latter________.
A．have a rich working experience
B．is friendly and cheerful
C．is over-confident and over-enthusiastic
D．is extremely capable
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