问题
不定项选择题
下列说法正确的是[ ]
A.用鼻子对着盛有氯气的瓶口，就可以嗅到氯气的气味
B.用排水集气法便可以收集到纯净的氯气
C.氯气有漂白性
D.自来水常用氯气来杀菌、消毒
答案
答案：D
搜题请搜索小程序“爱下问搜题”
下列说法正确的是[ ]
A.用鼻子对着盛有氯气的瓶口，就可以嗅到氯气的气味
B.用排水集气法便可以收集到纯净的氯气
C.氯气有漂白性
D.自来水常用氯气来杀菌、消毒
答案：D
| 在方框中选出适当的单词和短语填空 | |
(l)__________ their children may have manners that are not (2)__________ yours. MaIly years (3)__________, children who had good manners were seen and not heard. They kept (4)__________ if grown-ups(成年人) were talking. Today children have more freedom. Sometimes good manners in one place are bad in (5)__________ place. If you visit some friends in Mongolia(蒙古) and they ask you to cat (6)__________ them. What kind of manners do they want you to have? They want you to glve a loud "belch" after you finish (7)__________. Belching would show that you like your food. But in some other countries, if you give a loud belch, you are told to say "(8)__________". Manners are different all over the world. But it is good to know that all manners begin in the (9) __________ way. People necded ways to (10)__________ that they wanted to be friends. |