A:酒精
B:硫酸铜
C:冰醋酸
D:食盐水
看图连线
____When do you have class? At 10:00 a.m. A、
____When do you play sports? At 4:00 p.m. B、
____When do you eat dinner? At 5 p.m. C、
____When do you eat breakfast? At 7:00 a.m. D、
____When do you do morning exercises? At 6:00 a.m. E、
下列属于人类与环境相统一的人类活动有( )
驳论文要抓突破口,有三种情况,____,____,____,《中国人失掉自信心了吗》一文的突破口是____。