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【单选题】
最早出现根茎叶分化,最低等没有根茎叶分化,最早出现茎叶分化的植物分别是(  ) ①藻类植物②苔藓植物:③蕨类植物④种子植物.
A.
③①②
B.
②③④
C.
③②①
D.
①③④
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B.
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C.
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D.
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A.
正确
B.
错误
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A.
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B.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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A.
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B.
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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