单项选择题


A．He is making a public advertisement.
B．He is trying to sell something to the woman.
C．He does not agree with the woman.
D．He is making a report.
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单项选择题
According to paragraph 4, which of the following statement is not true
A．The EPA rules would take measures to force factories to get rid of air pollutants.
B．It is uncertain that the EPA would use the rule to deal with greenhouse gases.
C．The researchers are trying new approaches to reduce carbon emissions.
D．The automotive regulations have played a big part in regulating greenhouse gases.
单项选择题
A．identifyB．differentiateC．confineD．define
A．identify
B．differentiate
C．confine
D．define
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