皮皮学，免费搜题
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【单选题】
胚胎期造血首先出现在A.
肝脏
B.
卵黄囊
C.
胸腺
D.
淋巴结
E.
骨髓
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举一反三
【单选题】( )1.The earth a planet and it around the sun.
A.
are;go
B.
.was;went
C.
is;go
D.
.is;goes
【简答题】A．The earth is a planet. B．Stars in the sky are actually as small as they look. C．Satellites are all made by men. D．Men can conquer other planets.
【简答题】IAR工程文件的扩展名为_______。
【简答题】 一个IAR工程在硬盘中存放的文件扩展名为 。
【单选题】The Earth is a planet orbiting in the Sun‘s habitable zone. 查看材料
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】A．The earth is a planet. B．Stars in the sky are actually as small as they look. C．Satellites are all made by men. D．Men can conquer other planets.
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