单项选择题

A．There is enough spare time to fix the projector.
B．There is another projector the man can use.
C．The presentation can be given in another room.
D．She is going out to order a spare projector.
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单项选择题
From Paragraph 2 we learn that the author of the passage ______.
A．is a supporter of some modern ideologies
B．does not think that the adoption of any ideology could prevent war
C．believes that the adoption of some ideologies could prevent war
D．has no doubt about the troth of any ideologies
单项选择题
Which of the following is best supported by the passage
A．To effectively control pollution, local government should regularly revise the air pollution laws.

B．One of the most important steps in preserving natural lands is to better enforce air pollution laws.

C．Scientists should be consulted in order to establish uniform limits for all air pollutants.
D．Human activities have great impact on air pollution.
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