Most scientists seem to agree that ____certain limit should be set on ______consumption of cars to ease air pollution.
A．a(chǎn)；theB．/；theC．the；/D．the；the
A

試題分析：考查冠詞：句意：大多數(shù)科學家似乎同意要對汽車的消費設置一定的限制來緩解空氣污染。第一空填a，因為limit是可數(shù)名詞，a certain limit一定的限制，第二空填the，是特指“汽車的消費”，所以選A。
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