◎ 题干
According to the periodic table,          still some elements undiscovered.
A.there seem to be B.it seems to be C.it seems that D.here seem
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“According to the periodic table,still some elements undiscovered.A.there seem to beB.it seems to beC.it seems thatD.here seem…”主要考查了你对  【therebe句型】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。