单项选择题

A．Proteins.
B．All of the above.
C．A sequence of DNA
D．Cells.
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单项选择题
A．The man’s children saw many old movies.B．The man saw more old movies than the woman.C．The woman saw a good many old movies when she was young:D．The woman doesn’ t like old movies.
A．The man’s children saw many old movies.
B．The man saw more old movies than the woman.
C．The woman saw a good many old movies when she was young:
D．The woman doesn’ t like old movies.
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