A:把浓硫酸注入盛有水的量筒内稀释
B:用镊子取用块状固体药品
C:将pH试纸浸入待测液中测定pH
D:将实验剩余的药品放回原试剂瓶中
扩句。
①奶奶打水。
②天气热。
A. I want to buy some toys.
B. Go straight down this street. Turn left at the traffic lights.
C. Sure.
D. He is flying a kite.
E. They played basketball.
下列句子表意明确、没有语病的一项是 ( )
照样子写词语。一支支 ____;____;____