冈崎片段的生成是由于（）。

A.真核生物有多个复制起始点

B.拓扑酶的作用

C.RNA引物合成不足

D.随从链的复制与解链方向相反

E.DNA连接酶缺失

I don't want to _______ the topic, but why on earth did you get home that late last night? [ ]

A. take up

B. make up

C. break up

D. bring up