Chủ đề:
Bài 12: Hình vuôngCâu hỏi:
Cho ∆ABC vuông tại A.Trên hai cạch góc vuông AB và AC và ở phía ngoài tam giác dựng hình vuông ABGI và ACFE.CMR:
a) G,A,F thẳng hàng
b) Đường cao AH của ∆ABC đi qua trung điểm J của IE.
1. Giải thích vì sao các vật sau đây cân bằng? Biểu diễn các lực tác dụng lên vật khi đó:
a) Vật nặng 500g nằm trên mặt đất.
b) Vật nặng 200g treo trên sợi dây.
2. Giải thích các hiện tượng sau:
a) Khi bị vấp thường ngã về phía trước
b) Khi vẩy mạnh quần áo ướt nước thường bắn ra
c) Khi nhảy từ trên cao xuống chân thường gập lại
3. Nêu sự xuất hiện của các lực ma sát. Lấy ví dụ chứng tỏ lực ma sát có lợi và có hại.
4. Viết và giải thích công thức tính áp suất? Cách làm tăng, giảm áp suất? Cho ví dụ thực tế.
5. Viết và giải thích công thức tính áp suất chất lỏng? Nêu đặc điểm của tính áp suất chất lỏng.
6. Trên quãng đường AB dài 24km, có một xe ô tô đi nửa quãng đường đầu trong 12 phút, nửa thời gian sau đi với vận tốc là 40km/h.
a) Tìm vận tốc của xe ở nửa quãng đường đầu.
b) Tính vận tốc của xe trên cả quãng đường AB.
GIÚP MK VỚI !!!
MAI MK KIỂM TRA RỒI
CẢM ƠN NHIỀU Ạ!!!
1. Use the information to write a passage to tell about Ngoc:
Name: Le Thanh Ngoc
Age: 14
School: Nguyen Du Secondary School
Appearance: tall, thin, long black hair, brown eyes
Character: sociable, generous, kind
Address: 46 Nguyen Trai street, Ha Noi City
Family: father, mother and a brother
Hobbies: listening to music, collecting stamps
2. Read and answer the questions:
My father is middle-aged. He is 56 years old now. My father's body is alim and he has average height. Beside that, my father's skin is brown because he is a builder and he often works outside. My father's face is oval. He has short and curly hair. And his eyes are black like me. He is a handsome man. And last, my father has moustache. He looks younger than his age.
1. How old is her father?
.....................................................................
2. What does he do?
.....................................................................
3. What color is his skin?
.....................................................................
4. Is his face oval?
.....................................................................
5. Is his hair short and straight?
.....................................................................
6. How does he look like?
.....................................................................
I. Complete the sentences with is or are.
1. A lot of cars ________ made in Germany.
2. A lot of coffee________produced in Brazil.
3. New games consoles________created in Japan each year.
4. American films________watched all over the world.
5. A lot of tea________drunk Great Britain.
6. More and more computer games________sold each year.
7. Football________played in nearly every country in the world.
II.Complete the sentences with the past passive form of verd given.
1. The first portable computer________(produce)in 1975. It weighed 25 kilos!
2. The simpsons________(create) in 1987.
3. The London Eye________(build)in 1999.
4. The final match of the UEFA Euro 2012________(play) in Ukraine.
5. Rugby, tennis and cricket________(invent)in England.
6. Jeans________(wear)for the first time in 1873.
7. The first 3D printer________(make)in 1984.
III.Circle the correct alternative to complete the rules.
1. We use to be and the past simple/participe to make the passive.
2. We use the passive when the action/person who does the action is more important.
3. We use by/from to show who did the action.
IV. Complete the sentences with the correct form of the verb tobe.
1. These robots__________produced in Japan.
2. Each robot__________designed to look like an animal.
3. 3D printers__________invented in 1984.
4. Smartphones__________used by people all over the world.
5. The first wearable technology__________worn by skiers.
6. The first tablets__________produced in 2002.
V. Complete the sentences using the correct passive form of the verb given.
1. A brown dog__________(find)in the forest yesterday.
2. The classroom__________(clean)every evening.
3. At the restaurant our meal__________(serve)by an Italian waiter.
4. The rule is that guests at the hotel__________(ask)to pay when they arrive.
5. This type of chocolate__________(not make)in this town. They__________(make)in London.
6. __________this book__________(write)five years ago?
7. The rubbish__________(not collect)yesterday.
VI. Match the halves to make sentences.
1 A wolf 2 Laptops 3 The criminal 4 The winner 5 The homework 6 The novels 7 The meals |
a was written by a French author. b were cooked by a top chef. c was seen near the village. d was marked by the teacher. e were given to all the students in the class. f was found by the police. g was chosen by all the judges in the competition. |
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