题目

完形填空 I have a happy family.There are three people in my family,my parents and I. My name is Li Yan.I’m a middle school 1. .I am thirteen years old.I’m 2.China,so I can speak 3. .I can speak a little English,too.  My father is a teacher in a 4. .He can speak Chinese,English 5.French.He teaches English.He likes 6. .He can swim and play table tennis.  My 7.is a secretary(秘书). 8.works in a factory.She 9.only speak Chinese.She likes music and she can sing and play the 10. .  1.A.teacher       B.doctor C.student         D.worker 2.A.from          B.fo某溶液中只含有Na+、Al3+、Cl-、SO42- 四种离子，已知前三种离子的个数比为3：2：1，则溶液中Al3+和 SO42-的离子个数比为（ ）A．1：2B．1：4C．3：4D．3：2