题目

下列化学实验操作正确的是（ ） A . 氧气验满 B . 滴加液体 C . 取用液体 D . 试管加入固体粉末 答案：DThe World Cup will ________ in Tokyo next month．Do you know how many countries will be ________?A.happen; taking partB.hold; taking part inC.play; taking part inD.take place; joining it