Hello! Welcome to our new classroom.What's in the classroom? Look! A big blackboard, a teacher's desk, six pictures, many desks and chairs and a new computer in it.You can see eight new fans and four big lights.The wall is white and the floor is blue.The door is orange and the windows are green.My desk and my chair are near the window.I like my new classroom.

没有现成的CO₂气体发生器的情况下，请你选用如图中的部分仪器，装配成一个简易的、能随开随用、随关随停的CO₂气体发生装置．应选用的仪器是（　　）

按要求填空

（1）写电子式：羟基　____　氨气　____ 　

（2）实验室制乙烯方程式　____ 

（3）系统命名法（IUPAC）命名有机物____ 

（4）系统命名法（IUPAC）命名有机物____ ．

读南美洲地形分布图，回答问题．