题目

从方框中选出适当的句子补全对话，其中有两项是多余的。A: Hello, Kangkang!B: Hello, Jane!A: B: Nice to meet you，too.A: B: I'm fine, And you?A: B: A: Thanks.A. How are you?B. Nice to meet you.C. Thank you.D. How do you do?E. Welcome to Beijing.F. I'm OK.G. Here you are. 答案：【1】B【2】A【3】C【4】F【5】E下列有关染色体、DNA、基因的叙述正确的是A．基因控制生物的性状????????????? ????????????? ????????????? ????????????? ????????????? B．染色体就是DNAC．染色体就是基因????????????? ????????????? ????????????? ????????????? ????????????? ????????????? D．DNA位于基因上