According to the passage, which of the following is true about human-generated air pollution in localized regions？
A. It can be dwarfed by nature's output of pollutants in the localized region.
B. It can overwhelm the natural system that removes pollutants.
C. It will react harmfully with naturally occurring pollutants.
D. It will damage areas outside of the localized regions.
查看答案
A．waitingB．stayedC．impossibleD．expected
A. waiting
B. stayed
C. impossible
D. expected
【C11】
A. Therefore
B. Thus
C. Moreover
D. However
A．bitesB．battledC．battedD．barehanded
A. bites
B. battled
C. batted
D. barehanded
What is the force of the rise of two trends which appear opposite to each other？
A. The development of pop radio.
B. Photoshop that can edit human voice.
C. A vocal software called Auto-Tune.
D. The popularity of a pop singer named Cher.
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