29. 表示生物碱碱性的方法常用 A.pKb B.Kb C.pH D.pKa E.Ka

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“设计教学法”是一种( )A.分科课程论B.综合课程论C.学科课程论D.经验课程论

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Visitors who come here like the beach and sunshine

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. If people are exposed to(置身于) pure blue, _______

. If people are exposed to(置身于) pure blue, _________.A. their blood pressure ris

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Look! The kites in the sky are in different ______

Look! The kites in the sky are in different ______. A.sizes B.colorsC.priceD.nam

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