题目

实验室可用草酸(H2C2O4)在浓硫酸的作用下分解制得一氧化碳和二氧化碳(化学方程式为：H2C2O4CO2↑+CO↑+H2O)。用到的实验装置见下图： 若分别得到一氧化碳和二氧化碳，请回答： （1）装置A中，盛放浓硫酸的仪器名称是__________； （2）收集一氧化碳时，打开a、b，关闭c，装置B的作用是___________________。由于一氧化碳有毒，多余的气体应____________(填写具体处理办法)； （3）关闭______、打开______，释放出二氧化碳，并通过装置_____可收集到干燥的二氧化碳气   One Sunday morning Mr. Green and his child,Bill,are in a big shop. Mr. Green wants to buy a new blouse for Mrs. Green. Bill likes oranges,so his father buyks two kilos (公斤) of oranges for him,too. Bill wants to buy some picture-books and colour pencils,too. There are many people in the shop. They are men and women,old and young. They all want to buy something there.() 1. Mr. Green goes to the shop with .   A. Mrs. Green    B. his son   C. his daughter   D . his father() 2. Mr. Green Wcints to buy a new blouse for.   A. Bill's mother   B. Bill   C. his friend       D . other people() 3. Bill likes .   A. all the things   B. the new blouse   C. oranges   D. orange() 4. Bill wants to buy .   A. some picture-books       B. some colour pencils   C. clothes in the shop   D. A and B() 5. The shop is .   A. empty   B. close   C. full of children   D. full of people