2. 职称英语
  3. Original usage refers to rivers that ______ . [br] What isn’t said about the cas

Original usage refers to rivers that ______ . [br] What isn’t said about the cas

游客2024-06-14  14
问题 Original usage refers to rivers that ______ . [br] What isn’t said about the case with PCBs?
选项 A、An accumulation of PCBs in the human body is the direct reason of the cancer and other severe disorders.
B、PCBs can’t be disintegrated using conventional waste-treatment ways.
C、PCBs are degraded by natural processes very slowly.
D、PCBs have been found in high contents in the fatty tissues of fish.
答案 A
解析 该句提到的An accumulation of PCBs in the human body is known to induce cancer and other severe disorders明确指出PCBs在人体内的累积可以导致癌症和其他严重的疾病，由此可知[A]为答案。
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