题目

根据下列句子及所给单词的首字母写出所缺单词。在填写答卷时，要求写出完整单词。（每空只写一词）【1】The final e______ is coming. Everyone is busy preparing for it.【2】Remember to r______ the books to the library on time.【3】My father went to see a d______ because of his terrible toothache.【4】Dictionaries are very u________ for you to learn English.【5】After summer holiday, I am glad to meet my classmates and s______ our experience of the holiday together.【6】I think this novel is w________ reading. I have read it twice.性状分离比的模拟实验中，如图准备了实验装置，棋子上标记的D、d代表基因。实验时需分别从甲、乙中各随机抓取一枚棋子，并记录字母。此操作模拟了（ ）①等位基因的分离②同源染色体的联会③雌雄配子的随机结合④非等位基因的自由组合A．①③ B．①④C．②③ D．②④