单项选择题

In Paragraph 3, the word "spikes" (in boldface) probably refers to ______.

A．the increase above the smog standard
B．the irregular readings about air quality in some areas
C．the occurrences of smog in Los Angeles
D．the current standards demanded by ALA
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单项选择题
The media's response to ALA's State of the Air 2002 can best be described as ______.
A．trusting
B．suspicious
C．critical
D．hesitant
单项选择题
One of the problems with the ALA seems to be ______.
A．its lack of opinions from experts
B．its focus on some irregular cases
C．its attempt to make up the date
D．its inconsistent smog standards
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