题目内容
阅读下列句子，寻找适当的词填空。
If I want to know something about the lives of the plants, animals, I have to read the books about ________.
答案：biology
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题目内容
阅读下列句子，寻找适当的词填空。
If I want to know something about the lives of the plants, animals, I have to read the books about ________.