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假使东山不复起，定教万古可流芳 （中药）
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【单选题】Happy Earth DayThe Good News Here’s the good news: our air is cleaner, our lakes are purer, our forests are healthier, endangered species are recovering, toxic emissions are down, and acid rain has di...
A.
severe emissions
B.
ozone-layer depletion
C.
many pollutants
D.
toxic substances
【单选题】Happy Earth DayThe Good News Here’s the good news: our air is cleaner, our lakes are purer, our forests are healthier, endangered species are recovering, toxic emissions are down, and acid rain has di...
A.
grass-roots organizations
B.
individual activism
C.
environmentalists
D.
environmental regulation
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【单选题】Happy Earth DayThe Good News Here’s the good news: our air is cleaner, our lakes are purer, our forests are healthier, endangered species are recovering, toxic emissions are down, and acid rain has di...
A.
severe emissions
B.
ozone-layer depletion
C.
many pollutants
D.
toxic substances
【单选题】Happy Earth DayThe Good News Here’s the good news: our air is cleaner, our lakes are purer, our forests are healthier, endangered species are recovering, toxic emissions are down, and acid rain has di...
A.
grass-roots organizations
B.
individual activism
C.
environmentalists
D.
environmental regulation
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