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“科学家把控制合成胰岛素的基因转入大肠杆菌内，对大肠杆菌进行大规模培养，使之大量产生胰岛素”。科学家用的是________技术。
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【简答题】（广东省澄海区07～08学年高三第一学期期末试题，地理，34） 读甲、乙两河流水系图及相关资料，回答下列问题。 材料 从18世纪开始，沿乙河各国都十分重视以防治洪涝灾害为目的的河道整治，纷纷采取了建造堤防、修筑堰坝和船闸、开挖人工运河、疏浚河床淤泥等众多的工程措施治理河道、改造河道。乙河流域各国十分重视水电的梯级开发。它们采取自主建造或者联合修建的方式，在干流上兴建了几十座各级梯级水电站，并已基...
【简答题】在含有3个结点a,b,c的二叉树中,前序序列为abc且后序序列为cba的二叉树有 ( ) 棵。
【单选题】According to Harry Holzer, what function does education have in decreasing disconnection of black youths from the American mainstream?
A.
It enables black youths to get into employment.
B.
It provides black youths with reading and math skills.
C.
It prevents black youths from illegal activities.
D.
It decreases drug trade and drug use among black youth.
【简答题】What is the function of bone marrow? Its function is to______.
【单选题】What function does the description of the well play in Norwegian Forest?
A.
A metaphor of the inner world of Naoko
B.
Foreshadowing the death of the protagonist
C.
A metaphor of the underground world
D.
Creating the scary mood
【简答题】What is the directive function?
【单选题】In C launguage, when an array name is passed to a function, what is passed is the ______ of the beginning of the array.
A.
data
B.
value
C.
location
D.
element
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