Trong ống quản ở gần bầu đựng thủy ngân có một chỗ thắt

Chỗ thắt này có tác dung ngăn không cho thủy ngân tụt xuống khi đưa bầu thủy ngân ra khỏi cơ thể.Nhờ đó, ta có theẻ đọc được nhiệt độ cơ thể..Chúc bạn học tốt!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I live in a house in Hanoi. The house is in a small and quiet street in Cau Giay district of Hanoi. It takes about half an hour to go to the city center. The house was built 5 years ago. It isn't a big house and has two floors.
In my house there are 4 main rooms: a living room, a dining rooms, two bedrooms. Besides, we have a kitchen, a bathroom and a toilet.
We have a little but pretty garden; my family often spend our free time there to grow plant and vegetables. Next to the garden there is a small yard where my children often play after school.
In my house, I like the living room is my favorite one. This room was painted light green, so we feel very pleasant. In this room, there is a tea table, a sofa and a television. On the wall there is a couple of oil paintings. After dinner, our family often spend time together talking to each other or watching a favorite TV program. We often receive our guests in this room. I love my house. Everyday when I come back home from work, I have a warm feeling of being together with my whole family.

Of all the places in the world, I judge my home to be a paradise. As the old saying goes, “East or West, my home is the best”. My home offers affection and security. I live with my parents, my elder brother and younger sister.

I belong to a middle class family. My father is a supervisor in a factory and my mother is a production operator in the same factory. We have a four-room flat in Bedok Reservoir area. Our drawing-cum-front hall is decorated in a tasty manner. The northern corner has a television deck. Some ten meters from that end, there is a morgohany sofa set with an ornamented tea table in front.

Our kitchen is fully equipped with multi-cabinets and a small store. A small dining table with four chairs are placed near the sink. A big refrigerator stands silent in the corner. Our home has been decorated with many memorable souvenirs which remind us of our visits to different places. Our home has three bedrooms. The master bedroom is occupied by my parents. I share the second bedroom with my younger sister. The third bedroom is solely occupied by my brother. Sometimes, it is used as a guest room for our relatives from Malaysia. They usually visit us during festival season. Ours is a small and happy family where every member has consideration for the needs and comforts of the others. All of us do our share of housework. In most mornings, the place looks busy as everyone rushes about doing one’s morning chores. We normally have a light and quick breakfast. In every evening, my family will have dinner together. This is the time of day I like best.

We keep our home neat and tidy. Everything is kept in order and in its place. I am very proud of my home and I love it very much.