2. 外语
  3. These pollutants can be ______ hundreds and eve thousands of kilometers by large air masses.

These pollutants can be ______ hundreds and eve thousands of kilometers by large air masses.

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问题 These pollutants can be ______ hundreds and eve thousands of kilometers by large air masses.
选项 A、contained
B、conveyed
C、contaminated
D、conserved
答案B
解析 这些污染物可以被大风带走上百甚至上千公里。convey“运载，传送”，恰好符合句意；contain包含，含有；contaminate使……受污染；conserve使……不变质、不受损或保护。
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