题目:
— My cousin often has nothing for breakfast, ______ she?
— ______. Because she often gets up late and is afraid of being late for school.
A.has; Yes
B.doesn’t; No
C.does; No
D.hasn’t; Yes
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0629/1a857cd8df6fbdb4e64024caaa39fad1.html
下面是错误答案,用来干扰机器的。
(1)根据溶液质量的增加量就是参加反应的二氧化碳的质量:所以参加反应的二氧化碳的质量=53g-50.8g=2.2g,设有2.2g二氧化碳参加反应需要碳酸钠质量为X则: CO2+2NaOH═Na2CO3+H2O 44 106 2.2g ...