[单选题]This process may take _______ 15 minutes, Dr. Dexter says, but it has worked for several of his patients.
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2023-09-30 03:06:38
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[单选题]This process may take _______ 15 minutes, Dr. Dexter says, but it has worked for several of his patients.

A.as much as
B.as many as
C.as often as
D.as long as
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