题目内容
Fill in the blanks with the given words in their proper forms(用所给单词的适当形式填空,每空格限填一词):
This new photographic paper has its ______ built in.(chemical)
答案:chemistry
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题目内容
Fill in the blanks with the given words in their proper forms(用所给单词的适当形式填空,每空格限填一词):
This new photographic paper has its ______ built in.(chemical)