2. 外语
  3. Original usage refers to rivers that ______ . The oxidation of the decayed dead algal bodies can’t ______ .

Original usage refers to rivers that ______ . The oxidation of the decayed dead algal bodies can’t ______ .

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问题 Original usage refers to rivers that ______ .
The oxidation of the decayed dead algal bodies can’t ______ .
选项 A、lower the amount of oxygen in the fiver water
B、make the water taste badly
C、make the water unsuitable for human consumption
D、make the bacteria dead
答案D
解析 这两句提到Various species of bacteria then begin to decay and putrefy the dead algal bodies..., 即各种各样的细菌开始减少同时使海藻的尸体腐化，[A]、[B]、[C]均是其影响，但是并未提到使细菌死亡，故[D]为答案。
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大学英语六级

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