【单选题】
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【单选题】
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【单选题】ConsiDErED onE oF thE most BEAutiFul oF thE FinE Art, BAllEt is A ComBinAtion oF DAnCE AnD mimE pErFormED to musiC.
【单选题】 Some seeds are viable, or capable of growing into healthy plants, for only a few days after fallfrom the parent tree.
【单选题】 Which of the following does the passage mainly discuss
A．( Chemical causes of ice ages
B．( Techniques for studying ancient layers of ice in glaciers
C．( Evidence of a relationship between levels of carbon dioxide and global temperature
D．( Effects of plant life on carbon dioxide levels in the atmosphere
A．( Chemical causes of ice ages
B．( Techniques for studying ancient layers of ice in glaciers
C．( Evidence of a relationship between levels of carbon dioxide and global temperature
D．( Effects of plant life on carbon dioxide levels in the atmosphere
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