2. If a drop of oil is placed in a glass of water, it would float to the stop. A B C D3. She spoke so qui...

L

Luminos

23 tháng 1 2022

2. If a drop of oil is placed in a glass of water, it would float to the stop. A B C D3. She spoke so quick that I didn’t understand what she meant. A B ...

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#Hỏi cộng đồng OLM #Tiếng anh lớp 9

3

LP

Lê Phương Mai

23 tháng 1 2022

2, C => will

3, D => ment

4, B => hard

5, A => ∅

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A

︵✰Ah

23 tháng 1 2022

2. If a drop of oil is placed in a glass of water, it would float to the stop.

A B C D

3. She spoke so quick that I didn’t understand what she meant.

A B C D

4. Nam studies very hardly, so he always gets good marks.

A B C D

5. If we will go on littering , the environment will become seriouly polluted

A B C D

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QV

Quỳnh vũ

15 tháng 3 2022

VII. Choose the underlined word or phrase (A, B, C or D) that needs correcting.1. If a drop of oil is placed in a glass of water, it would float to the top. A B C D2. TheTuoi Tre is a daily newspaper that is wide read by both teenagers and adults. ...

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VII. Choose the underlined word or phrase (A, B, C or D) that needs correcting.

1. If a drop of oil is placed in a glass of water, it would float to the top.

A B C D

2. TheTuoi Tre is a daily newspaper that is wide read by both teenagers and adults.

A B C D

3. My parents wouldn’t let me stavingup late when I was a child.

A B C D

4. Her children are used to picking up after school every day. They don’t have towalk home.

A B C D

5. I’musually right about the weather, amn’tI?

A B C D

6. Could I change seats with you? I’d like sittingnext to my friends.

A B C D

7. Watch television to the exclusion of all other activities is not a healthy habit for agrowing

A B C D

child.

8. Hans is only fourteen, but he seemsenough oldto stay out until ten.

A B C D

9. I think that’s an interesting thought, isn’tthat?

A B C D

10. Greeting enough sleep is important in ordernot fall asleep is class.

A B C D

#Hỏi cộng đồng OLM #Tiếng anh lớp 9

2

NM

Nguyễn Minh Anh

15 tháng 3 2022

1C 2C 3B 4B 5D 6C 7A 8C 9D 10D

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H

htfziang

15 tháng 3 2022

1. If a drop of oil is placed in a glass of water, it would -> bỏ float to the top. (câu đk loại 0: điều hiển nhiên: If S V, S V đều chia hiện tại)

A B C D

2. TheTuoi Tre is a daily newspaper that is wide -> widely read by both teenagers and adults.

A B C D

3. My parents wouldn’t let me staying -> stay up late when I was a child.

A B C D

4. Her children are used to picking-> being picked up after school every day. They don’t have to walk home.

A B C D

5. I’m usually right about the weather, am’t I?

A B C D

6. Could I change seats with you? I’d like sitting-> to sit next to my friends.

A B C D

7. Watch-> Watching television to the exclusion of all other activities is not a healthy habit for a growing

A B C D

child.

8. Hans is only fourteen, but he seems enough old-> old enough to stay out until ten.

A B C D

9. I think that’s an interesting thought, isn’t that-> it?

A B C D

10. Greeting enough sleep is important in order not fall-> to fall asleep in class.

A B C D

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TN

Thi Nguyen

8 tháng 2 2021

F. CORRECTION I. Choose the underlined word or phrase (A, B, C or D) that needs correcting. 1. If a drop of oil is placed in a glass of water, it would float to the top. A B C D 2. The Tuoi Tre is a daily newspaper that is wide read by both teenagers and adults. A B C D 3. My parents wouldn’t let me staying up late when I was a child. A B C D 4. Her children are used to picking up after school every day. They don’t have to walk home. A B C D 5. I’m usually right about the weather, amn’t...

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#Hỏi cộng đồng OLM #Tiếng anh thí điểm lớp 9

1

LT

Lê Trang

9 tháng 2 2021

F. CORRECTION

I. Choose the underlined word or phrase (A, B, C or D) that needs correcting.

1. If a drop of oil is placed in a glass of water, it would -> does float to the top. A B C D

2. The Tuoi Tre is a daily newspaper that is wide -> widely read by both teenagers and adults. A B C D

3. My parents wouldn’t let me staying -> stay up late when I was a child. A B C D

4. Her children are used to picking -> being picked up after school every day. They don’t have to walk home. A B C D

5. I’m usually right about the weather, amn’t -> aren't I? A B C D

6. Could I change seats with you? I’d like sitting -> to sit next to my friends. A B C D

7. Watch -> Watching television to the exclusion of all other activities is not a healthy habit for a growing child. A B C D

8. Hans is only fourteen, but he seems enough old -> old enough to stay out until ten. A B C D

9. I think that’s an interesting thought, isn’t that -> it? A B C D

10. Greeting enough sleep is important in order not -> not to fall asleep is class. A B C D

1. The bad weather didn’t make my flight be delayed, but the terrorism does -> did. A B C D

12. Kevin had took -> taken home lots of nice souvenirs last time, so he didn’t buy anymore. A B C D

13. A tour -> Tour guide was showing the tourists around when a something fell down from the sky. A B C D

14. If you decide to start the -> a trip, you must reserve a seat in advance on planes or trains. A B C D

15. I bet you will never have the nerve -> not to start an expedition to an Amazon rainforest. A B C D

16. My trip to the countryside was fantastic. The locals were extremely welcome -> welcoming. A B C D

17. Did you have a chance to do any sightsee -> sightseeing? A B C D

18. I find it absolutely astonished -> astonishing that you didn’t like Paris. A B C D

19. You’re a -> the third person to ask me about the trip. A B C D

20. When he was ten, he taught himself to play a -> the violin. A B C D

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LQ

Lê Quỳnh Anh

30 tháng 12 2017

If a drop of oil is placed in a glass of water, it _______ to the top.

A. will float

B. would float

C. does float

D. should float

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

30 tháng 12 2017

Kiến thức: Câu điều kiện loại 1

Giải thích:

Ngữ cảnh: Nếu một giọt dầu được đặt trong một cốc nước thì nó sẽ nổi lên trên bề mặt.

=> giả định có thật ở hiện tại => dùng câu điều kiện loại 1

Cấu trúc: If + S + V(s,es), S + Will/Can/shall…… + V

Tạm dịch: Nếu một giọt dầu được đặt trong một cốc nước, nó sẽ nổi lên trên cùng.

Chọn A

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HN

Hằng Nguyễn

17 tháng 3 2020

IV. (8Q9.13) Find mistake in each sentence and correct it. 1. What do you do if you won the first prize of the lottery? 2. Would people be able to fly if they have feathers instead of hair? 3. John now wishes he hasn’t broken his encouragement with Marian. 4. I would do it if I could, but I can’t so I wouldn’t even try. 5. If a drop of oil is placed in a glass of water, it would float on the surface. 6. If Peter had been more careful, he wouldn’t break the camera I lent him. 7....

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#Hỏi cộng đồng OLM #Tiếng anh thí điểm lớp 8

0

LQ

Lê Quỳnh Anh

22 tháng 6 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.

The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm³is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.

An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.

It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.

From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.

Archimedes’ Principle explains why ____

A. all objects will float

B. Archimedes became

C. objects seem lighter in water

D. humans can swim

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

22 tháng 6 2019

Đáp án C

C. objects seem lighter in water: Định lí Archimedes giải thích tại sao: các vật thể có thể nhẹ hơn nước.

Chúng ta có thể tìm thấy ý này trong câu hai của đoạn một : “The principle is most frequently applied….and why objects seem lighter in water”.

Đúng(0)

LQ

Lê Quỳnh Anh

13 tháng 12 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.

The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm³is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.

An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.

It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.

From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.

Ships cannot be so heavily loaded if they want to sail in fresh water as they sail in the sea, because ____

A. fresh water is ‘lighter’ than sea water

B. there’s too much salt in sea water

C. sea water is ‘saltier’ than fresh water

D. fresh water is more polluted

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

13 tháng 12 2019

Đáp án A

A. fresh water is ‘lighter’ than sea water: ý nghĩa của cả câu này là “Tàu thuyền không thể được chất nặng khi chúng đi trên sông như khi chúng đi trên biển, bởi vì nước sông thì nhẹ hơn nước biển”.

Chúng ta có thể tìm thấy ý này trong câu hai của đoạn bốn: “In addition, they cannot be so heavily loaded….to give the necesssary upthrust”

Đúng(0)

LQ

Lê Quỳnh Anh

26 tháng 2 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.

The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm³is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.

An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.

It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.

From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.

A block of wood with a density seven tenths that of water will ____

A. go up and down the sink

B. float with a half of its volume under water

C. float with an equal volume of its volume under water

D. sink immediately when submerged

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

26 tháng 2 2019

Đáp án C

C. float with an equal volume of its volume under water

Ý nghĩa của cả câu: “Một khối gỗ có tỉ trọng bảy phần mười tỉ trọng của nước sẽ nổi lên với một thể tích tương đương với thể tích chìm của nước”.

Chúng ta có thể tìm thấy ý này trong câu ba của đoạn 3: “Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaces is the same as the block’s own weight”.

Đúng(0)

LQ

Lê Quỳnh Anh

5 tháng 5 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.

The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm³is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.

An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.

It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.

From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.

A ship floats, whereas a block of iron of the same mass sinks because the ship ____

A. is made of wood

B. is lighter

C. has buoys

D. has a special shape

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

5 tháng 5 2019

Đáp án D

D. has a special shape: ý nghĩa cả câu này: “Một chiếc tàu nổi bềnh bồng trong khi một khối sắt có trọng lượng giống như thế thì chìm bởi vì chiếc tàu có hình dáng đặc biệt”.

Chúng ta có thể tìm thấy ý này trong hai câu cuối của đoạn 3: “If a dense material is made into a suitable shape, it will float because of Archimedes’ principle. A ship floats, whereas a block of iron of the same mass sinks”.

Đúng(0)

LQ

Lê Quỳnh Anh

26 tháng 5 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions

Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking, and why objects seem lighter in water. It also applies to balloons.

The key word in the principle is “upthrust”, which refers to the force acting upward to reduce the apparent weight of the object when it is under water. If, for example, a metal block with a volume of 100 cm³is dipped in water, it displaces an equal volume of water, which has a weight of approximately 1 N (3.5 oz). The block therefore seems to weigh about 1 N less.

An object will float if its average density is less than that of water. If it is totally submerged, the weight of the water it displaces (and hence the upthrust on it) is greater than its own weight, and it is forced upward and out of water, until the weight if water displaced by submerged part is exactly equal to the weight of the floating object. Thus a block of wood with a density six tenths that of water will float with six tenths of its volume under water, since at that point the weight of fluid displaced is the same as the blocks’s own weight. If a dense material is made into a suitable shape, it will float because of Archimedes’s principle. A ship floats, whereas a block of iron of the same mass sinks.

It is also because of Archimedes’s principle that ships float lower in the water when they are heavily loaded (more water must be displaced to give the necessary upthrust). In addition, they cannot be so heavily loaded if they are to sail in fresh water as they can if they are to sail in the sea, since fresh water is less dense than sea water, and so more water must be displaced to give the necessary upthrust. This means the ship is lower in the water, which can be dangerous in rough weather.

From “Archimedes’s Principle”, MicrosoftÒ Student 2008[DVD]. Microsoft Corporation, 2007.

What happens when something is immersed in a fluid?

A. It will be pushed further down with a force, equal to the weight of the fluid displaced.

B. It receives an upward force, equal to the weight of the fluid displaced

C. It receives a download force, equal to the weight of the fluid displaced

D. The fluid will expand the object and overflow to the floor

#Hỏi cộng đồng OLM #Mẫu giáo

1

DH

Dương Hoàn Anh

26 tháng 5 2018

Đáp án B

It receives an upward force, equal to the weight of the fluid displaced: “Nó nhận một lực đẩy lên tương đương với trọng lượng của chất lỏng bị chiếm chỗ”.

Câu này thích hợp với câu hỏi: “Điều gì xảy ra khi một vật nào đó nổi lên trong một chất lỏng?”

Chúng ta có thể tìm thấy ý này trong câu đầu của đoạn một: “Archimedes’s Principle is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upthrust equal to the weight of the fluid displaced.”

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