被教育学者公认为是标志着教育学从哲学中独立出来的第一部教育学专著是( )。A．杜威

连词成句。

1. reading, are, the, newspaper, they (.)

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2. softly, to, I, you, want, sing (.)

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3. inside, the, What's, temperature (?)

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4. some, have, I, rocks, for, mouth, little, his (.)

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5. going, put, on, I'm, to, hat, my (.)

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甲状腺上动脉发自
脑膜中动脉发自
椎动脉发自
甲状腺下动脉发自
腹壁上动脉发自

A.颈外动脉 

B.锁骨下动脉 

C.甲状颈干 

D.上颌动脉 

E.胸廊内动脉

As to terms of payment, we often require a confirmed and irrevocable letter of credit payable by draft at sight.

什么叫神经母细胞瘤？预后因素有哪些？

下列各项中，（）会造成设备管线水击。

A.蒸汽未放净冷凝水

B.未放净设备存水

C.管线里有油

D.管线材质等级低