The teacher asked his students what oil was

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问题 The teacher asked his students what oil was

选项 A、made of
B、made by
C、made up of
D、made from

答案C

解析区别：be made of由…做成；be made up of由…组成。根据句子的意思，老师应该是问学生石油是由什么组成的。所以选C。

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公共英语二级笔试

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