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Lê Khi
23 tháng 10 2023
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17 tháng 11 2017
Mạch gỗ : Vận chuyển nước và muối khoáng hòa tan từ rễ lên thân , cành ,lá
Mạch rây : Vận chuyển các chất hữu cơ .
10 tháng 9 2018
\(73^2+27^2+54\cdot73=73^2+2\cdot73\cdot27+27^2\)
\(=\left(73+27\right)^2=100^2=10000\)
QB
1
13 tháng 10 2017
41/24 - 2 x 1/2x + 2 x 5 = 0
41/24 - x + 10 = 0
x + 10 = 41/24
x = 41/24 - 10
x = - 199/24
14 tháng 5 2018
I. Chọn từ có phần gạch dưới được phát âm khác so với những từ còn lại. (1 điểm)
1.
A. window
B. flow
C. how
D. know
2.
A. recycle
B. thirsty
C. hungry
D. finally
3.
A. engineer
B.geography
C. language
D. great
4.
A. lettuce
B. tube
C. music
D. use
II. Chọn đáp án đúng. (3 điểm)
1.
They _______ in the summer.
A. goes swimming
B. gos swimming
C. go swimming
D. going swimming
2.
What’s the _______ of Pleiku City ? - Over 200 thousand people.
A. students
B. languages
C. population
D. seasons
3.
_______ is she from? - She is from Japan.
A. What
B. Where
C. When
D. Which
4.
_______ you speak French?- No, I don’t.
A. Would
B. Can
C. Do
D. Are
5.
Ho Chi Minh City is _______ city in Vietnam.
A. big
B. very big
C. bigger
D. the biggest
6.
_______ is the Great Wall? - It’s between 4 and 22 meters high.
A. How long
B. How often
C. How old
D. How high
7.
I'm _______. I'd like some noodles.
A. thirsty
B. hungry
C. empty
D. tired
8.
What's he doing? He's _______.
A. swims
B. swimming
C. swim
D. to swim
9.
He sometimes _______ to pop music.
A. listens
B. reads
C. watches
D. writes
10.
_______ is the weather like in the summer?
A. What
B. Which
C. How
D. When
III. Chọn đáp án đúng để hoàn thành đoạn văn sau. (3 điểm)
much to natural picnic go they tent sometimes
Huong and Hoa are close friends. They often (1) to the movie theater at the weekend. They (2) go to the zoo. They also have a (3) , but not always. They go (4) the countryside. They always take a (5) , some water and a camping stove. Sometimes, (6) camp overnight. They like camping very (7) . They can enjoy the fresh air and the (8) beauty.
IV. Đọc đoạn văn sau và nhận định những phát biểu bên dưới là đúng (True) hay sai (False). (2 điểm)
My uncle is an engineer. His name is Hung. He is going on vacation this summer. First, he is going to visit Ha Long Bay. He is going to stay in a small hotel near the bay for two days. Then he is going to visit Da Lat for three days. Finally, he is going to visit some friends in Ho Chi Minh City. He is going to stay there for one day. He is going to walk along Saigon River. He is going to fly home.
1.
Mr. Hung is going to visit three cities this summer.
A. True
B. False
2.
He is going to visit Ha Long Bay first, then Ho Chi Minh City, and finally Da Lat
A. True
B. False
3.
He is going to stay in Da Lat for three days
A. True
B. False
4.
He is going to travel home by train
A. True
B. False
V. Nối câu hỏi ở cột A với câu trả lời ở cột B. (1 điểm)
A
1. How do you feel?
2. What's your favorite sport?
3. How much meat do you need?
4. Is Ha Noi smaller than Ho Chi Minh city?
B
a. Two kilos.
b. It is soccer.
c. Yes, it is.
d. I feel happy.
1. 2. 3. 4. I. Chọn từ có phần gạch dưới được phát âm khác so với những từ còn lại. (1 điểm) 1. A. window B. flow C. how D. know 2. A. recycle B. thirsty C. hungry D. finally 3. A. engineer B.geography C. language D. great 4. A. lettuce B. tube C. music D. use II. Chọn đáp án đúng. (3 điểm) 1. They _______ in the summer. A. goes swimming B. gos swimming C. go swimming D. going swimming 2. What’s the _______ of Pleiku City ? - Over 200 thousand people. A. students B. languages C. population D. seasons 3. _______ is she from? - She is from Japan. A. What B. Where C. When D. Which 4. _______ you speak French?- No, I don’t. A. Would B. Can C. Do D. Are 5. Ho Chi Minh City is _______ city in Vietnam. A. big B. very big C. bigger D. the biggest 6. _______ is the Great Wall? - It’s between 4 and 22 meters high. A. How long B. How often C. How old D. How high 7. I'm _______. I'd like some noodles. A. thirsty B. hungry C. empty D. tired 8. What's he doing? He's _______. A. swims B. swimming C. swim D. to swim 9. He sometimes _______ to pop music. A. listens B. reads C. watches D. writes 10. _______ is the weather like in the summer? A. What B. Which C. How D. When III. Chọn đáp án đúng để hoàn thành đoạn văn sau. (3 điểm) much to natural picnic go they tent sometimes Huong and Hoa are close friends. They often (1) to the movie theater at the weekend. They (2) go to the zoo. They also have a (3) , but not always. They go (4) the countryside. They always take a (5) , some water and a camping stove. Sometimes, (6) camp overnight. They like camping very (7) . They can enjoy the fresh air and the (8) beauty. IV. Đọc đoạn văn sau và nhận định những phát biểu bên dưới là đúng (True) hay sai (False). (2 điểm) My uncle is an engineer. His name is Hung. He is going on vacation this summer. First, he is going to visit Ha Long Bay. He is going to stay in a small hotel near the bay for two days. Then he is going to visit Da Lat for three days. Finally, he is going to visit some friends in Ho Chi Minh City. He is going to stay there for one day. He is going to walk along Saigon River. He is going to fly home. 1. Mr. Hung is going to visit three cities this summer. A. True B. False 2. He is going to visit Ha Long Bay first, then Ho Chi Minh City, and finally Da Lat A. True B. False 3. He is going to stay in Da Lat for three days A. True B. False 4. He is going to travel home by train A. True B. False V. Nối câu hỏi ở cột A với câu trả lời ở cột B. (1 điểm)A
1. How do you feel?
2. What's your favorite sport?
3. How much meat do you need?
4. Is Ha Noi smaller than Ho Chi Minh city?
B
a. Two kilos.
b. It is soccer.
c. Yes, it is.
d. I feel happy.
1. 2. 3. 4.22 tháng 5 2018
n future, when robots can be used both in homes and in other areas, it could improve the standard of living of people. House hold chores took significant cut in humans' life. Many people burn their energy on their day to day tasks like cooking, cleaning etc after coming from work. When robots can complete such jobs, people can spend more time with their family and friends. Experts say that many major problems in the modern world are caused due to miscommunication. When people get more time, they can talk freely and resolve such issues and eventually create happy society.
Robots can be used on certain jobs to curb accidents due to negligent behaviour of some people. When robots are used on such work, it does not cause any human life due to accidents at the work places. Human resource can be efficiently used by involving humans to perform those tasks which demand human skills like critical thinking, problem solving etc while robots can be used on low end jobs like moving cargos, heavy weights lifting etc.
While some people talk about how robots can be useful to human, others voice their concerns like demotion in human values and creation of lazy society due to heavy dependency on robots. When robots become cheaper to produce, employers may prefer to use more robots than humans. As the technology constantly improves the capabilities of robots, it could undermine the values of humans.
Many people may rely on robots heavily. Some may even develop a habit of using robots on tasks that they can easily do. This could create lazy society. Humans could start to cherish robots at the expense of human lives.
In conclusion, robots can be used on anything which can eventually improve humans' standard of living but definitely not at the expense of human lives. Robots can be used to help humans to live in harmony and to form happy societies. This fundamental setup should not be allowed to deteriorate by robots.
H
3
MA
17 tháng 6 2020
Vì Trận Bạch Đằng (Hán tự: 白藤江之战) năm 938 là một trận đánh giữa quân dân Tĩnh Hải quân (vào thời đó, Việt Nam chưa có quốc hiệu chính thức) do Ngô Quyền lãnh đạo đánh với quân Nam Hán trên sông Bạch Đằng. Kết quả, người Việt giành thắng lợi nhờ kế sách cắm cọc nhọn dưới lòng sông Bạch Đằng của Ngô Quyền.[1] Trước sự chiến đấu dũng mãnh của người Việt, quá nửa quân Nam Hán bị chết đuối và Hoàng tử Nam Hán là Lưu Hoằng Tháo cũng bị Ngô Quyền giết chết[1]. Đây là một trận đánh quan trọng trong lịch sử Việt Nam. Nó đánh dấu cho việc chấm dứt hơn 1000 năm Bắc thuộc của Việt Nam, nối lại quốc thống cho dân tộc Việt[1] nên Trận Bạch Đằng năm 938 có trong thời kì Bắc Thuộc.