单项选择题
Which description is more polite（）
A.She is quite fat.B.She is a little curvy.C.She is kind of heavy.
单项选择题 Which might be a better way to know whether a person is married or not（）
单项选择题 How to address one woman when you don’t know whether she is married or not（）
单项选择题 实验室用Cl2与KOH反应制备KClO3，为了吸收尾气中的氯气，常将尾气导入装有NaOH溶液的烧杯中，烧杯口应盖上浸有某种溶液的纱布，该溶液是（）
