Spee曲线最低点位于()。A.下颌第二磨牙的近颊尖B.下颌第一磨牙的远颊尖C.下颌第一磨牙的近颊尖D.下颌第二磨牙的远颊尖E.下颌第三磨牙

Spee曲线最低点位于()。A.下颌第二磨牙的近颊尖B.下颌第一磨牙的远颊尖C.下颌第一磨牙的近颊尖D.下颌第二磨牙的远颊尖E.下颌第三磨牙的近颊尖

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Children who often exercise are cleverer.

Children who often exercise are cleverer.

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China will build up a space station in ten years.

China will build up a space station in ten years.

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Do you often do your washing in the evening?

Do you often do your washing in the evening?

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Excuse me,please.Could you tell me how to get to the post office?

Excuse me,please.Could you tell me how to get to the post office?

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