2. 外语
  3. Some environmentalists are dubious of the statement that the air quality in this city has ______ since 2000.

Some environmentalists are dubious of the statement that the air quality in this city has ______ since 2000.

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问题 Some environmentalists are dubious of the statement that the air quality in this city has ______ since 2000.
选项 A、decreed
B、defaulted
C、deteriorated
D、degraded
答案C
解析 一些环境学家对该城市自2000年来空气质量一直恶化这一说法表示怀疑。A. decreed“颁布，命令” B．defaulted“违约，缺席，拖欠”C．deteriorated“恶化，变坏” D．degraded“退化，降级”
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