题目

中学常见物质A，B，C，D，E，X，存在下图转化关系 (部分生成物和反应条件略去)。下列推断错误的是() A . 若D是一种白色沉淀，在空气中最终变为红褐色，则A可能是铁 B . 若D是一种强碱，则A，B，C均可与X反应生成D C . 若D为NaCl，且A可与C反应生成B，则E可能是CO2 D . 若D是一种强酸，则A既可以是单质，也可以是化合物，且D可与铜反应生成B或 C完形填空Mike and Ann are _______They live in a large house. The house is _______the foot of a mountain （big hill）. Near the mountain _______ a lake.There are four people in the family: Mike, Ann, their father and their mother. Their father is a farmer. He _______a farm not far from their house. Their mother is at home. She is a housewife （家庭主妇）. Mike and Ann go to school every day. They are in the same school, but they are_______ . Mike is in Grade 2. Ann is in Grade 1.【1】A. brothers and sisters B. brother and sister C. a brother and sister【2】A. at B. in C. on【3】A. has B. there is C. is there【4】A. works at B. is working C. works on【5】A. in different grades B. in a different grade C. at different grades