题目

原子序数为16的元素位于周期，族，属于类单质． 答案：【1】三【2】ⅥA【3】非金属 1.Zhang Ming’s cousin will celebrate his __________ (第十二) birthday this coming Friday.2.The runner’s dream is to break the world ___________ (记录) of the 100-metre race.3.Lin Tao always speaks to the elderly ___________ (礼貌地) and they all like him.4.The Palace Museum is __________ (of value) to not only China but also the world.5.Some people don’t _________ (get to know) the importance of health until they have lost it.