实验室部分仪器或装置如图所示，请回答下列问题．
如图是计算函数y=ln(-x),0,2x,x≤-2-2<x≤3x>3的值的程序框图，在①、②、③处分别应填入的是（ ）
What's your hobby? Last Friday, the School Student Union made a survey about this. The following are the ideas of four middle school students.
I like playing football very much. I think it is one of the most popular ways to relax. And it can help me grow stronger. I often play football on PE lesson and after school. In this way I make friends with a lot of football-likers. (Li Xiaofeng)
My hobby is singing. It's a great hobby! Singing can be used to relieve(解除) my fatigues(疲劳).Singing makes me happy when I'm sad. While I am singing songs, I can share other's joys and sorrow(悲痛) in the life. I really enjoy singing. I keep practicing singing every day. And I hope to become a singer one day.(Yuan Zhihua)
I am a 15-year-old student in Junior Grade 3. Though I am occupied with my study, I would like to spend time on my hobbies. One of my hobbies is reading. It can not only kill the time, but also, more important, help improve my comprehension ability. While reading, I can learn a lot. (Chen Jiayao)
Online games are my favorite. I spend lots of time playing on-line games every day. In this way I have made many friends. I think online games make me clever and confident, thought I am not good at my lessons. （Liu Wei）
Information Card
Name
Hobby
Reasons
Li Xiaofeng
Playing football
Help him grow stronger and ____.
Yuan Zhihua
Singing
．____and make her happy.
Chen Jiayao
____
____ and help improve comprehension ability.
Liu Wei
Playing online games
Help to make friends and make him____.
正确的调查方法步骤是（ ）
①选择调查范围 ②设计调查路线 ③分组 ④归类 ⑤调查记录 ⑥资料整理．
化学与我们的生产、生活息息相关．现有以下物质
①食醋 ②Ca3（PO4）2③葡萄糖 ④活性炭 ⑤熟石灰 ⑥维生素A ⑦大理石 ⑧CH4
请选择合适物质的序号填空：
（1）农业上常用作磷肥的是____ ；（2）能为人体提供能量的物质是____ ；
（3）常用作厨房调味品的是____ ；（3）常用于改良酸性土地壤的是____ ；
（5）常用作建筑材料的是____ ；（6）最简单的在机化合物是____ ；
（7）人体缺乏后能导致盲症的是____ ；（8）常用于冰箱除异味的物质是____ ．
