题目

根据短文内容及首字母提示，补全空格内单词，使短文完整、通顺。Your mother is the most important person in your life. She helps you with your homework. If you get ill, she stays with you the w【1】 night. She makes your m【2】 every day. Your mother is a【3】 there for you. That's why there is a s【4】 day for mothers a【5】 the world . Mother's Day becomes a modern holiday in the US. A woman called Anna Jarvis and her mother, Anna Reese Jarvis, live in a poor town. They work hard to make the town b【6】. Jarvis' mother died(去世) on Sunday，May 14，1继在上海和安徽首次发现 H7N9 禽流感病例，我国多地出现禽流感疫情，为此某研究小组为了研制预防H7N9 禽流感病毒的疫苗，开展了前期研究工作。其简要的操作流程如下图。下列有关叙述错误的是A. 过程①不需使用Taq酶B. 步骤②过程所依据的理论基础之一是DNA分子结构的相似性C. 步骤③可将重组质粒导入所有的大肠杆菌D. 检验Q蛋白的免疫反应特性，可用 Q 蛋白与患禽流感康复的鸡的血清进行抗原——抗体特异性反应实验