题目

____computers play such an important part in our daily life? A．Why it is that B．Why is it that C．Why was it that D．Why is it 答案：B5．中心法则揭示了遗传信息在细胞内传递的一般规律，下列叙述正确的是（　　）A．细胞有丝分裂间期只发生a过程B．b过程需要tRNA和核糖体同时参与C．真核细胞中a、b过程分别发生在细胞核和细胞质D．a、b、c、d、e过程都会发生碱基互补配对