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【多选题】
提出造血干细胞概念的依据是（）A.
造血干细胞由胚胎干细胞发育而来
B.
维持体内恒定的血细胞数量
C.
1961年Till等在动物身上发现了造血干细胞
D.
1979年体外培养人造血祖细胞成功
E.
采用了天然的细胞标志纯化造血干细胞和发展体外造血干细胞培养技术
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举一反三
【简答题】The students were excited when they (see) ______ their newly-built school.
【简答题】Intercity Bank is planning to furnish the newly-built office building.
【单选题】Lots of problems _______ from the newly –built apartment .
A.
rise
B.
raise
C.
lift
D.
arise
【单选题】The newly built cafe′， the walls of ________ are painted light green, is really a peaceful place for us, specially after hard work. [ ]
A.
that
B.
it
C.
what
D.
which
【单选题】The newly built factory is in urgent need of a number of skilled and ______ workers.
A.
consistent
B.
conscious
C.
confidential
D.
conscientious