What will happen to the plane under the“tank test”?

What will happen to the plane under the“tank test”?

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阅读下文,回答题:请回答第21题:(  )

阅读下文,回答题:请回答第21题:(  )

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Her dog ran out of the yard__________the old lady opened the

Her dog ran out of the yard__________the old lady opened the gate.

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