2. 外语
  3. Ireland’s total primary energy requirements ten years ago amounted to 8 billion tons of oil equivalent, ______ 38% was produced

Ireland’s total primary energy requirements ten years ago amounted to 8 billion tons of oil equivalent, ______ 38% was produced

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问题 Ireland’s total primary energy requirements ten years ago amounted to 8 billion tons of oil equivalent, ______ 38% was produced from indigenous sources.
选项 A、which
B、of which
C、part of which
D、out of which
答案B
解析 本句是定语从句。可以用of which 38% was produced from indigenous sources，也可以38% of which was produced from indigenous sources。这里指的是80亿吨石油中有38%是本国生产的。
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