2. 外语
  3. The car pollutes, but advances in fuel quality and efficiency, and in micropro-cessed engine technology, have radically cut_____

The car pollutes, but advances in fuel quality and efficiency, and in micropro-cessed engine technology, have radically cut_____

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问题 The car pollutes, but advances in fuel quality and efficiency, and in micropro-cessed engine technology, have radically cut______.
选项 A、releases
B、emissions
C、poisons
D、contamination
答案B
解析 四个单词的意思分别是release“释放”；emission“(光、热等的)散发，发射，喷射”；poison“毒物”；contamination“(具体)污染”。句意是：虽然汽车产生污染，但是油料质量和利用效率的提高，以及微电脑发动机技术的进展已经大大地降低了尾气的排放。所以正确答案是B选项，如the emission of heat from a fire(从火炉中发出的热)。
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