题目:
---Jimmy has had a lot of parties recently. ---Yes , that might _____ why he didn’t do well in the test.
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答案:
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答案:D题目分析:pH能够反应出溶液的酸碱性,pH大于7,则说明此溶液显得是碱性,pH等于7,则说明此溶液显得是中性,pH小于7,则说明此溶液显得是酸性,取某地土壤浸出液,用pH试纸测得其显碱性,即pH是大于7的,...