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【单选题】
关于杂交瘤细胞说法正确的是A.
拥有两亲本细胞各一半染色体
B.
具有两亲本细胞特性
C.
不能在HAT培养基存活
D.
两个细胞融合而成
E.
不能长期增殖
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【简答题】How about bikes? Wheels and _________? 那自行车呢?带轮子之类的东西呢?
【单选题】— We’ll have a picnic tomorrow. Do you know we will go for the picnic? — How about riding bikes? It must be fun.
A.
how
B.
where
C.
why
D.
what
【简答题】How about bikes? Wheels and _________?
【简答题】设随机变量X与Y相互独立,且 则P(X=Y)= ____
【单选题】Amy Company produces and sells bikes. It expects to sell 15,000 bikes in March 2011 and had 1,200 bikes in finished goods inventory at the end of February 2011. Amy Company would like to complete oper...
A.
15,300 bikes
B.
15,000 bikes
C.
14,700 bikes
D.
13,800 bikes
【单选题】—Could you tell me _______ the bikes this morning? —He did it with the help of his father. [ ]
A.
how did he fix up
B.
how he fixes up
C.
how he fixed up
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