题目

二氧化氯是新一代饮用水的消毒剂，我国成功研制出制取它的新方法，原料之一是亚氯酸钠（化学式为NaClO2），其反应的微观过程如下。下列说法正确的是  【  】                                                                        A.该反应属于置换反应                         B.1个丙分子中有2个原子 C.二氧化氯中氯元素的化合价是+4价         D.反应前后原子种类发生了改变Complete the following sentences as required （根据所给要求完成下列句子,前六小题每题空格限填一词）【1】She cut the bananas into pieces before making a banana milkshake.（改为一般疑问句）______she________the bananas into pieces before making a banana milkshake?【2】They will get up early in the morning to see the sunrise in the mountains.（对划线部分提问）___________they get up early in the morning?【3】Visitors showed great interest in the Steam Courses in our school.（保持句意不变） Visitor were__________the Steam Courses in our school.【4】Jack never returns the library books and magazines on time. （改为反意疑问句）Jack never returns the library books and magazines on time, __________?【5】Mary sent some postcards to her friends in China after she arrived in London.（改为被动语态）Some postcards________to her friends in China after Mary arrived in London.【6】Jessica asked her husband, “Have you repaired the washing machine?”（合并为一句）Jessica asked her husband_______________had repaired the washing machine.【7】much, it, send, cost, study abroad, the parents, to, money, the girl, to（连词成句）_______________________________________________________________________.