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8 tháng 6 2021

vv

câu 1

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying.

câu 2

black hole can be formed by the death of a massive star. When such a star has exhausted the internal thermonuclear fuels in its core at the end of its life, the core becomes unstable and gravitationally collapses inward upon itself, and the star's outer layers are blown away.

câu 3

The defining feature of a black hole is the appearance of an event horizon—a boundary in spacetime through which matter and light can pass only inward towards the mass of the black hole. Nothing, not even light, can escape from inside the event horizon.

câu 4

66 billion solar masses Currently the largest known black hole, powering the quasar TON 618, has a mass of 66 billion solar masses. TON 618's enormous bulk led scientists to speculate whether or not even larger black holes exist, and if there is any upper limit to their sizes.câu 5Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way. Astronomers can detect them by watching for their effects on nearby stars and gas.câu 6 ( tự làm đi )tui Tham  khảo hết nha 
8 tháng 6 2021

thanks ạ!

8 tháng 6 2021

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8 tháng 6 2021

ui hình như bị lỗi ó bn:<

22 tháng 9 2021

1. Rubbish is damaging communications satellites.

Communications satellites is being damaged by rubbish
2. They are opening a new hotel in my street.

A new hotel is being opened in my street
3. Scientists were investigating the “black hole” over the South Pole at that time.

"The black hole" over the South Pole was being investigated by scientists at that time
4. My sister is making a dress for my mom’s birthday.

A dress is being made for my mom's birthday by my sister
5. When we came, the little boy was painting a picture of the tiger that he saw in the zoo.

When we came, a  picture of the tiger that he saw in the zoo was being painted by him
6. He is taking his children to the zoo this Sunday.

His children are being taken to the zoo this Sunday.

7. In the conference room, people were using a lot of different languages.

In the conference room, there are a lot of different language
8. Someone left this purse in a classroom yesterday.

His purse was left in a classroom yesterday
9. Where did you buy this dictionary?

Where was this dictionary bought
10. How often does your mother take you to the cinema

How often are you taken to the cinema

Read the passage and decide which statements are true (T) or false (F).This writing is about my best friend, Mai. We got to the same school and we’ve been together for three years. Mai is very pretty. She has short black hair and big brown eyes. She is clever and hard-working but she is also very funny. She makes jokes and we all laugh. She loves reading and writing short poems. I like being with her. We often do our homework together and she helps me a lot. I also like her because she knows a...
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Read the passage and decide which statements are true (T) or false (F).

This writing is about my best friend, Mai. We got to the same school and we’ve been together for three years. Mai is very pretty. She has short black hair and big brown eyes. She is clever and hard-working but she is also very funny. She makes jokes and we all laugh. She loves reading and writing short poems. I like being with her. We often do our homework together and she helps me a lot. I also like her because she knows a lot about astronomy and we can chat about it for hours. At the moment we’re making a Space mini book. We’re doing a lot of searching on the Internet. This Saturday, we’re going to the National Museum to take some photos for our project. Then we’re watching a new film on the Disney channel together. It’s going to be fun!

1.      Phuc and Mai are studying in the same school

2.      Mai has long black hair and big eyes

3.      She is hard working and funny

4.      She likes writing short stories

5.      Phuc and Mai are making a mini book on Geography now

6.      They search for information in library books

7.      They are going to the museum to take photos for their project. After that they will go to the cinema together

1
8 tháng 12 2021

1 T

2 F

3 T

4 F

5 T

6 F

5 T

IX. Read the passage and decide which statements are true (T) or false (F).This writing is about my best friend, Mai. We got to the same school and we’ve been together for three years. Mai is very pretty. She has short black hair and big brown eyes. She is clever and hard-working but she is also very funny. She makes jokes and we all laugh. She loves reading and writing short poems. I like being with her. We often do our homework together and she helps me a lot. I also like her because she...
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IX. Read the passage and decide which statements are true (T) or false (F).

This writing is about my best friend, Mai. We got to the same school and we’ve been together for three years. Mai is very pretty. She has short black hair and big brown eyes. She is clever and hard-working but she is also very funny. She makes jokes and we all laugh. She loves reading and writing short poems. I like being with her. We often do our homework together and she helps me a lot. I also like her because she knows a lot about astronomy and we can chat about it for hours. At the moment we’re making a Space mini book. We’re doing a lot of searching on the Internet. This Saturday, we’re going to the National Museum to take some photos for our project. Then we’re watching a new film on the Disney channel together. It’s going to be fun!

 

1.      Phuc and Mai are studying in the same school

2.      Mai has long black hair and big eyes

3.      She is hard working and funny

4.      She likes writing short stories

5.      Phuc and Mai are making a mini book on Geography now

6.      They search for information in library books

7.      They are going to the museum to take photos for their project

After that they will go to the cinema together

3
30 tháng 11 2021

IX. Read the passage and decide which statements are true (T) or false (F).

This writing is about my best friend, Mai. We got to the same school and we’ve been together for three years. Mai is very pretty. She has short black hair and big brown eyes. She is clever and hard-working but she is also very funny. She makes jokes and we all laugh. She loves reading and writing short poems. I like being with her. We often do our homework together and she helps me a lot. I also like her because she knows a lot about astronomy and we can chat about it for hours. At the moment we’re making a Space mini book. We’re doing a lot of searching on the Internet. This Saturday, we’re going to the National Museum to take some photos for our project. Then we’re watching a new film on the Disney channel together. It’s going to be fun!

 

1.      Phuc and Mai are studying in the same school       T

2.      Mai has long black hair and big eyes       F

3.      She is hard working and funny       T

4.      She likes writing short stories        F

5.      Phuc and Mai are making a mini book on Geography now      F

6.      They search for information in library books      F

7.      They are going to the museum to take photos for their project,

after that they will go to the cinema together     T

CHÚC CẬU HỌC TỐT VÀ LUÔN ĐẠT ĐƯỢC KẾT QUẢ CAO!

30 tháng 11 2021

1 T

2 F

3 T

4 F

5 F

6 F

7 T

8 F

11 tháng 12 2017

1)My school library is on the second floors. It is very large and tidy. It often opens at 7:00a.m and closes at 10:00a.m on Tuesday. It has many books such as: novels ,stories,....The books are putting on the shelf. I often go to school library once a week. I read some books,stories to relaxing. I love my school library so much.

31 tháng 12 2021

in - The red car is more expensive than the black one - Why

31 tháng 12 2021

They are very interested ________ literature. *

at

on

in

of

The black car is cheaper than the red one. = _______________________________________. *

The red car is expensive than the black one.

The red car is more expensive than the black one.

The red car is expensive more than the black one.

The red car is expensiver than the black one.

A: _______ don't you come to my house? – B: OK. Let's go. *

Why

Who

What

Which

VI. Rewrite the sentence so that it means as the first ones, beginning with the given words. (1 pt)1. Let’s go to the movies."What about……. …………………………………………………………………..2. The blue bike is more expensive than the black bike." The black bike.……………………………………………………………………………..3. There is a big library in Lan’s school.  à Lan’s school4. Lan learns Math very well.  à Lan is very …5. Which subject do you like best?  à What is your .6. Why don’t we go swimming?   à What about………………………………………     7. The...
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VI. Rewrite the sentence so that it means as the first ones, beginning with the given words. (1 pt)

1. Let’s go to the movies."What about……. …………………………………………………………………..

2. The blue bike is more expensive than the black bike.

" The black bike.……………………………………………………………………………..

3. There is a big library in Lan’s school.  à Lan’s school

4. Lan learns Math very well.  à Lan is very …

5. Which subject do you like best?  à What is your .

6. Why don’t we go swimming?   à What about………………………………………     

7. The birthday cake is very delicious.  à What  ………………………………….

8. When is her birthday? àWhat ……………………………………          ?

9. Nam works more hours than Lan.  à Lan works ………………………………………

VII. Complete the sentences with comparative or superlative form

1. Mount Everest is (high) ............................................................ mountain in the world.

2. Winter is (cold) ........................................................... season in the year.

3. Going by car is (convenient) .................................................... going by bicycle in this area.

4. The Sahara is (hot) .......................... ................................. desert in the world.

5. This building is (modern) .............. ............................................. that one.

6. The boat trip is (good) ................... ........................................ experience of my life.

7. Are your streets (narrow) .............. ............................................. our streets.

8. It’s (beautiful) .............................. ............................. mountain in Australia.

9. This park is (beautiful) ................ ........................................... that park.

10. The weather in Cua Lo Beach is (hot) .... .................................................... that in Ha Noi.

1
28 tháng 12 2021

going to the movies. 

is less expensive than the blue one. 

has a big library.

good at Math. 

favorite subject?

going swimming?

a delicious birthday cake!
is her date of birth?

fewer hours than Nam. 

the highest

the coldest 

more convenient than 

the hottest 

more modern than 

the best 

narrower than 

the most beautiful 

more beautiful than

hotter than

23 tháng 6 2017

Question VII: Read the following passage and answer the questions below.

Headache is a very common disease in the USA. Every year, about fifty million people have to go to the doctor because of headache. The symptoms of a headache are various. People can see black dots or bright spots in front of their eyes. They may also have pains only on one side of the head. Sometimes when the pain goes away, the head is sore. People have headache when they work too hard or they are too nervous about something. Medicine can help cure the disease but people usually have to do more than taking tablets. They can prevent headaches by changing their diets or their lifestyle or simply by going to bed.

*Questions:

1. Why is headache a common disease in the USA?

=>Because about fifty million people have to go to the doctor because of it.

2. What can people see when they have headaches?

=>They can see black dots or bright spots in front of their eyes

6.Can people have pains on only one side of the head?

=>Yes,they can.

4. When do people have headaches?

=>They have headache when they work too hard or they are too nervous about something.

5. How can they prevent headaches?

=> They can prevent headaches by changing their diets or their lifestyle or simply by going to bed.