2. 外语
  3. Almost overnight, Ames became a hero of environmentalists when his finding led to new and ______ bans on certain chemicals.

Almost overnight, Ames became a hero of environmentalists when his finding led to new and ______ bans on certain chemicals.

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问题 Almost overnight, Ames became a hero of environmentalists when his finding led to new and ______ bans on certain chemicals.
选项 A、regulations
B、authorities
C、orders
D、suggestions
答案B
解析 authority权威，威信；regulation规则，调节，校准；order次序，顺序；suggestion提议，意见。
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