21、Theory is based on practice and ________ serves practice.

A.in turn          B.by and by           C.by chance         D.in this case

21、A

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科目:高中英語 來源: 題型:

Theory is based on practice and ________ serves practice.

A.in turn          B.by and by           C.by chance         D.in this case

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科目:高中英語 來源:四川省綿陽高中2011級(jí)第二學(xué)年末教學(xué)質(zhì)量測試 題型:單項(xiàng)填空

 Theory is based on practice and ________ serves practice.

A.in turn                B.by and by           C.by chance           D.in this case

 

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科目:高中英語 來源:黃岡題庫 練考新課堂 高二英語(下) 題型:014

Theory is based on practice and ________ turn serves ________.

[  ]

A.on; the practice
B.in; practice
C.by; theory
D.a(chǎn)t; the theory

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科目:高中英語 來源:學(xué)習(xí)·探究·診斷  高二英語(下) 題型:014

As is known to us, theory is based on practice and ________ serves practice.

[  ]

A.by chance
B.in turn
C.in return
D.by turn

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