Welcome to my home. This is our sitting-room(客厅). It is a big room. There is a big TV set in the middle(中间). The TV set is on a long table. There is a sofa in front of the TV set. Mother is sitting on the sofa, watching TV. Next to the sofa, there is a lamp
(灯). There is a washing-machine(洗衣机) in the corner(在····的角落) of the sitting room. On the machine, there is piece of beautiful cloth(布). There are some flowers on the window, the window is in the white wall. I like my home.
6. There aren’t any ____________ in the sitting room.
A. TV sets B. desks C. sofas
7. The TV set is __________ the sitting room.
A. in the middle of B. in the corner of C. in the front of
8. Are there any flowers on the window?
A. Yes, they are. B. No, they aren’t. C. Yes, there are.
9. Washing-machine is used for (用来做)________.
A. washing dishes B. washing clothes C. washing clothe
10.The sitting room is_________.
A. not good B. small C. big
；NH3的电子式
；3NO2+H2O==HNO3+NO
CuSO4+SO2↑+2H2O