The European Union countries were once worried that they would not have______supplies of petroleum.

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问题 The European Union countries were once worried that they would not have______supplies of petroleum.

选项 A、sufficient
B、proficient
C、efficient
D、potential

答案A

解析 句意为:欧盟国家一度忧虑他们将不会拥有充分的汽油供应。Sufficient“充足的/充分的”;efficient“有效率的”;Proficient“熟练的”;potential“潜在的”
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本试题收录于: 英语题库普高专升本分类
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