A:过滤
B:点燃酒精灯
C:倾倒液体
D:收集氢气
Annie has a ___________,and she is going to see her dentist today。
用所给词的适当形式填空
(1)Autumn is a____(wonder)season.
(2)We all hope____(have)a long holiday.
(3)I____(buy)a new car the day before yesterday.
(4)I like doing some____(shop)with my parents.
(5)He did some____(read)last night.
传染病是人类健康的大敌,人类与传染病进行了长期不懈的斗争.我们一起回顾一下:
男女生之间不可能建立纯真的异性友谊,因此男女生尽量少交往。( )