Câu 2: Nếu đun nóng một bình thủy tinh đậy kín nút thì khối lượng riêng của không khí trong bbinhf có thay đổi không ?

Các câu hỏi liên quan

1.Read the passage and fill in each gap with a suitable world: 1)My house is (1)..............................the country,in the village.Behind my house,there is a paddy field.There is a river in (2)........................of my house.(3)........................to the river,there is a vegetable garden.(4)........................mother is working there now.She takes vegetable to the market every (5)..........................because there is a big (6)....................in my neighborhood.Next to the market,(7).............is a store where my mother buys something for my family.She must go there (8)..................bike because it is not very near.(9)......................the left of the store is an intersection.It is a dangerous place and there (10)...................a road sign here. 2)This is my friend's house.(1).................is in the city.In (2).................of the house,there is a big yard (3).....................a lot of beautiful flowers.Behind the house,(4)...............is a large lake.Next (5)...................the house,there is a bookstore.It is a(6)..................house.My friend (7).....................in that house.She (8)......................it very much. 3)Linh is my friend.She(1).....................in a house in the countryside.There (2)........................a lake and a small river near(3)........................house.Opposite her house,there is a paddy (4)..................... There is a big (5).......................in front of her house.In the garden,there are beautiful (6).................There flowers make her house very nice.To the left (7).......................her house,there are (8)...............trees.To the right of the house, (9)is a well.Behind the house,there (10)......................mountains.