Read the following passage and mark the letter A, B, C, or D to indicate the correct answer...

DM

Dương Minh

19 tháng 6 2017

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.

Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags, discarded bottles and soiled nappies at the edge of every road. Nowadays, Britain seems to look at least as bad. What has gone wrong?

The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before. If it is not cleared up and properly thrown away, it stays in the undergrowth for years; a semi-permanent reminder of what a tatty little country we have now. Firstly, it is estimated that 10 billion plastic bags have been given to shoppers. These will take anything from 100 to 1,000 years to rot. However, it is not as if there is no solution to this. A few years ago, the Irish government introduced a tax on non-recyclable carrier bags and in three months reduced their use by 90%. When he was a minister, Michael Meacher attempted to introduce a similar arrangement in Britain. The plastics industry protested, of course. However, they need not have bothered; the idea was killed before it could draw breath, leaving supermarkets free to give away plastic bags.

What is clearly necessary right now is some sort of combined initiative, both individual and collective, before it is too late. The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip. We may well be at the tipping point. Yet we know that people respond to their environment. If things around them are clean and tidy, people behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly. No much of Britain looks pretty squalid. What will it look like in five years?

For the writer, the problem is that __________

A. rubbish is not cleared up

B. rubbish last longer than it used to

C. our society is increasingly mobile

D. Britain is a tatty country

#Mẫu giáo

1

NH

Nguyen Hoang Hai

19 tháng 6 2017

Đáp án B

Đối với tác giả, vẫn để chính là __________.

A. rác thải không được dọn sạch B. rác tồn tại lâu hơn so với trước đây

C. xă hội chúng ta ngày càng thay đổi D. Anh là một nước bẩn thỉu

Căn cứ vào thông tin trong câu sau: “The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before.”

(Vấn đề nằm ở chỗ rác thải được tạo ra bởi sự biến đổi của cuộc sống, cái mà kéo dài lâu hơn trước .)

Đúng(0)

DM

Dương Minh

22 tháng 6 2018

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.

Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags, discarded bottles and soiled nappies at the edge of every road. Nowadays, Britain seems to look at least as bad. What has gone wrong?

The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before. If it is not cleared up and properly thrown away, it stays in the undergrowth for years; a semi-permanent reminder of what a tatty little country we have now. Firstly, it is estimated that 10 billion plastic bags have been given to shoppers. These will take anything from 100 to 1,000 years to rot. However, it is not as if there is no solution to this. A few years ago, the Irish government introduced a tax on non-recyclable carrier bags and in three months reduced their use by 90%. When he was a minister, Michael Meacher attempted to introduce a similar arrangement in Britain. The plastics industry protested, of course. However, they need not have bothered; the idea was killed before it could draw breath, leaving supermarkets free to give away plastic bags.

What is clearly necessary right now is some sort of combined initiative, both individual and collective, before it is too late. The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip. We may well be at the tipping point. Yet we know that people respond to their environment. If things around them are clean and tidy, people behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly. No much of Britain looks pretty squalid. What will it look like in five years?

The word “alternative” in the last paragraph is closest in meaning to ______.

A. freedom

B. disruption

C. change

D. option

#Mẫu giáo

1

NH

Nguyen Hoang Hai

22 tháng 6 2018

Đáp án D

Từ “alternative” trong đoạn văn gần nghĩa nhất với __________.

A. sự tự do B. sự phá vỡ, sự chia rẽ

C. sự thay đổi D. sự lựa chọn, sự thay thế, khả năng

Căn cứ vào thông tin trong câu sau: “The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip.” (Nhiều sự thay thế tiếp tục trượt dốc đến khi chúng ta có một đất nước giống như một bãi rác đô thị khổng lồ.)

Đúng(0)

DM

Dương Minh

22 tháng 9 2017

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.

Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags, discarded bottles and soiled nappies at the edge of every road. Nowadays, Britain seems to look at least as bad. What has gone wrong?

The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before. If it is not cleared up and properly thrown away, it stays in the undergrowth for years; a semi-permanent reminder of what a tatty little country we have now. Firstly, it is estimated that 10 billion plastic bags have been given to shoppers. These will take anything from 100 to 1,000 years to rot. However, it is not as if there is no solution to this. A few years ago, the Irish government introduced a tax on non-recyclable carrier bags and in three months reduced their use by 90%. When he was a minister, Michael Meacher attempted to introduce a similar arrangement in Britain. The plastics industry protested, of course. However, they need not have bothered; the idea was killed before it could draw breath, leaving supermarkets free to give away plastic bags.

What is clearly necessary right now is some sort of combined initiative, both individual and collective, before it is too late. The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip. We may well be at the tipping point. Yet we know that people respond to their environment. If things around them are clean and tidy, people behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly. No much of Britain looks pretty squalid. What will it look like in five years?

The word 'they in the last paragraph may refer to ________.

A. people

B. the environment

C. much of Britain

D. cleanliness

#Mẫu giáo

1

NH

Nguyen Hoang Hai

22 tháng 9 2017

Đáp án A

Từ “they” trong đoạn văn cuối nhằm để cập đến ________.

A. con người B. môi trường

C. phần lớn nước Anh D. sự sạch sẽ

Căn cứ vào thông tin trong can sau: “If things around them are clean and tidy, peop1e behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly." (Nếu mọi thứ xung quanh sạch sẽ và ngăn nắp, con người cũng sạch sẽ và gọn gàng. Nếu họ bị bao quanh bởi sự bẩn thỉu, họ sẽ cư xử một cách bủn xỉn.)

=> They ở đây thay thế cho một danh từ chỉ người và từ dữ liệu ở trên ta suy ra được they ở đây để chỉ people.

Đúng(0)

DM

Dương Minh

3 tháng 12 2018

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags,...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the question.

Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become. The pavements are stained with chewing gum that has been spat out and the gutters are full of discarded fast food cartons. Years ago I remember travelling abroad and being saddened by the plastic bags, discarded bottles and soiled nappies at the edge of every road. Nowadays, Britain seems to look at least as bad. What has gone wrong?

The problem is that the rubbish created by our increasingly mobile lives lasts a lot longer than before. If it is not cleared up and properly thrown away, it stays in the undergrowth for years; a semi-permanent reminder of what a tatty little country we have now. Firstly, it is estimated that 10 billion plastic bags have been given to shoppers. These will take anything from 100 to 1,000 years to rot. However, it is not as if there is no solution to this. A few years ago, the Irish government introduced a tax on non-recyclable carrier bags and in three months reduced their use by 90%. When he was a minister, Michael Meacher attempted to introduce a similar arrangement in Britain. The plastics industry protested, of course. However, they need not have bothered; the idea was killed before it could draw breath, leaving supermarkets free to give away plastic bags.

What is clearly necessary right now is some sort of combined initiative, both individual and collective, before it is too late. The alternative is to continue sliding downhill until we have a country that looks like a vast municipal rubbish tip. We may well be at the tipping point. Yet we know that people respond to their environment. If things around them are clean and tidy, people behave cleanly and tidily. If they are surrounded by squalor, they behave squalidly. No much of Britain looks pretty squalid. What will it look like in five years?

The writer says that it is a good time to see Britain before the trees have leaves because ____________.

A. Britain looks perfect

B. you can see Britain at its dirtiest

C. you can see how dirty Britain is now

D. the grass has thickened on the verges

#Mẫu giáo

1

NH

Nguyen Hoang Hai

3 tháng 12 2018

Đáp án C

CHỦ ĐỀ POLLUTION

Nhà văn nói rằng đây là thời điểm tốt để nhìn thấy nước Anh trước khi những cái cây mọc là bởi vì _________.

A. nước Anh trông có vẻ hoàn hảo

B. bạn có thể thấy Anh là nước bẩn nhất

C. bạn có thể thấy nước Anh bây giờ bẩn như thế nào

D. cỏ đã dày trên các bờ ven đường

Căn cứ vào thông tin trong câu sau: "Before the grass has thickened on the roadside verges and leaves have started growing on the trees is a perfect time to look around and see just how dirty Britain has become.”

(Trước khi cỏ mọc dày trên những con đường ven đường và những chiếc lá bắt đầu mọc trên cây là thời điểm hoàn hảo để nhìn xung quanh và xem nước Anh đã trở nên bẩn thỉu như thế nào.)

Đúng(0)

LI

Life is good

16 tháng 4 2016

ĐỀ THI CHỌN HỌC SINH GIỎI TIẾNG ANH LỚP 7 TRƯỜNG THCS TIÊN LỮ NĂM HỌC 2014-2015. I, Phonetics: 1, Choose the word which has the underlined part differently pronounced from the others(1,0p) 1. A-seat B-read C-area D-overseas2. A-birthday B-AprilC-thirdD-invite3. A-kichenB-coachC-changeD-mechanic4. A-questionB-celebrationC-collectionD-invitation5. A-holdB-hourC-honeyD-hundred6....

Đọc tiếp

ĐỀ THI CHỌN HỌC SINH GIỎI TIẾNG ANH LỚP 7 TRƯỜNG THCS TIÊN LỮ

NĂM HỌC 2014-2015.

I, Phonetics:

1, Choose the word which has the underlined part differently pronounced from the others(1,0p)

1. A-seat B-read C-area D-overseas

2. A-birthday B-AprilC-thirdD-invite

3. A-kichenB-coachC-changeD-mechanic

4. A-questionB-celebrationC-collectionD-invitation

5. A-holdB-hourC-honeyD-hundred

6. A-drugB-futureC-usefulD-computer

7. A-thousandB-aroundC-souvenirD-about

8. A-laughedB-ploughedC-coughedD-sunbathed

9. A-copiedB-studiedC- worriedD- prevented

10. A-teenagerB-togetherC-guestD-regularly

2, Choose the word which has the different stress from the others (0,5p)

1, A- explainB-surgeryC-improveD-material

2, A-measureB-preferC- periodD-distance

3, A- addressB-amazingC-authorD-complain

4, A-eventB-essayC-complimentD-employee

5, A-surprisingB-terribleC- awfulD-furnished

II, VOCABULARY AND STRUCTURES:

1, Choose the best option(1,5p)

1, When he is at school. He always wear……… uniform

A-the

B-an

C-a

D-A+B

2, Look! The plane is flying to Noi Bai airport. It ………….

A-will land

B-is going landing

C-intend to lend

D-is landing

3, Her father …………………..

A-bought for her a cap

B-bought a cap to her

C-buy her a cap

D-bought a cap for her

4, you/ watch/ football match/ TV/ yesterday/ night?

A- Did you watch a football match on TV yesterday night?

B- Do you watch a football match on TV yesterday night?

C- Did you watch a football match on TV yesterday last night?

D- Did you watch a football match on TV at night yesterday ?

5, You …….last Saturday.

A-have flu

B-had flu

C-got flu

D-catch flu

6, her/ what/ sister’s/ is/ weight/ friend’s/ ?

A-What is her friend’s sister weight?

B-What is her sister’s friend’sweight?

A-What is her sister friend’s weight?

A-What is her sister’s weight friend’s ?

7,

A- How heavy is your brother

B- How much does your brother weigh?

C- What’s your brother’s weight?

D-all are correct

8, He stopped in front of the gas station ………..some petrol an hour ago

A-getting

B-to get

C-got

D-would get

9, How much does it ………to mail a local letter?

A-take

B-pay

C-cost

D-price

10, We have fun …………. together on the farm evey year.

A-working

B-to work

C-to working

D-all are incorrect

11, He is reading comics with great ………………

A-please

B-pleasant

C-pleasure

D-pleased.

12, Mr John ……..the gardening when he was sicteen

A-made

B-did

C-took

D-worked

13, Will you please …………..home?

A-give me a pen

B-give me a ride

C-take me a ride

D-B+C

14, Is she very ……with wearing skirts?

A-popular

B-busy

C-famous

D-used

15, I’ll phone her ….I get home

A-if

B-as soon as

C-as

D-while

2, Give the correct form of the words to complete the sentences below.(1,0p)

1, I have ( little)….. time to play soccer than he does.

2, We will take part in ( act)…. a play for our school anniversary celebration.

3,That (music) ……..plays a lot of instruments.

4, (Art)…. paint beautiful pictures.

5, Thanks for ( invite)……..me to your wedding.

6, They (celebrate)…….their wedding for ten years and many people attended their( celebrate)…..

7, Did many (visit)…. come to Hue last year?

8, Yesterday night I had a slight fever and a (run)………. nose.

9,People feel (please) ……when they catch the common cold.

10, This building is very beautiful but it is ( safe) ……….for people to live in .

3, Find out an error and correct it (1,0p)

1, How high large modern the bridge is !

2, Do you think she is going to appear in the meeting tonight?

3, Lan didn’t join her classmate’s party and so did Mai.

4, This kichen is more lovely and more pretty than yours.

5, Your children always talking in Math class.

6, Could she tell me how to get to the city center?

7, What did he eat for dinner? He eats rice , vegetable and boiled eggs.

8, Did you and your friends meet a headache?

9, Lien with her children are showering in the bathroom.

10, They may perhaps keep awake if there’s a strange noise.

4, Fill the suitable prepositions in the blanks(1,0p)

1, Where are you going ………..your holidays?

2, My friend – Quang is afraid …..snakes.

3, Children are looking forward ……..their summer holiday.

4, She was good at drawing and swimming when she was …the age of thirteen.

5, My friend took me …the temple last Saturday

6, Were you very tired …………the trip last month?

7, The shirt is yellow ….white flowers …..it.

8, They stopped ……..the restaurant …..a while.

III, READING.

1, Fill one suitable word to complete the passage.(1,0p)

I’d like to tell you about my family. My Dad is fifty five . He’s (1)…older than my Mom. She is only forty two. My father has his (2) …business. Mom (3)….. him with the business. I have two brother and a sister, so we are six (4) …us altogether in the family.

My (5)……brother is Jack. He’s twenty six . He is (6)….and has two children. My sister Marie is the (7)…older . She’s twenty one years old. She’s an accountant and she works in a bank. Next to her is (8)….. I’m (9) …..my second year of university. The next youngest is Jame. He’s thirteen. He(10)……to secondary school.

2, Read the text and choose the best option.(1,0p)

Our class are going (1)… a trip to the mountains. Everyone (2)….bringing some thing to eat(3)…. to drink. Kate is bringing some bread and oranges. Mary is bringing some bananas and eggs. Liz is bringing ten apples and two big (4)…of Coca cola. Peter is bringing a lot of meat and I am bringing some orange juice, pork and chicken. Now we (5)…hungry . We are sitting (6)….. a big tree and (7)…… lunch. Peter is eating a lot (8)….. he doesn’t have breakfast. We are talking and laughing a lot (9)….. we are eating. (10)…… we have lunch, we go hiking in the mountains.

Every one of us are happy because we are having a lot of fun

1, A-on

B-in

C-to

D-for

2, A-are

B-is

C-likes

D-enjoy

3, A-and

B-both

C-or

D-0

4, A-cans

B-bottles

C-packets

D-boxes

5, A-are feeling

B-feel

C-are

D-B+C

6, A-on

B-below

C-under

D-beneath

7, A-taking

B-cooking

C-having

D-preparing

8, A-and

B-so

C-as

D-if

9, A-when

B-as soon as

C-because

D-while

10, A-After

B-Then

C-Before

D-Finally

IV, WRITING

1, Rewrite the sentences without chaning their meaning.(1,0p)

1, I get to work in half an hour by bike.

It ……………………………………………….

2, How much were these books ?

What…………………………………………..?

Did your classmates enjoy listening to music?

Were…………………………………………………?

3, They had a two-week summer vacation

Their…………………………………………………..

4, She’ll probably take an English course for six weeks.

She ………………………………………………………..

5, It isn’t important for you to finish the work

You don’t ……………………………………………..

6, She works more hours than him (many)

……………………………………………………….

7, Aren’t you going hiking next weekend?(of)

……………………………………………………………?

8, Mr Jack produces the most rice of all farmers.

No ………………………………………………………..

9, How long did it take her to travel to her hometown?

How…………………………………………………………?

10, It is impossible for the boys to play soccer here

The ……………………………………………………………..

2, Rearrange the words or phrases to make the meaningful sentences.(1,0p)

1, takes/ father/ it/ my/ to/ learn/ speak/ English/ three/ months/ to.

2, please/ three/ I/ have/ local/ can/ stamps ?

3, week/ they/ a / moved/ new/ Ha Noi/ last/ to/ apartment/in .

4, not/ keep/ difficult/ will/ to/ in/ be/ too/ touch/ each other/it/ with.

5, always when/ we/ with/ them/ we/ speak/ meet/ English/ them.

6, good/ what/ play/ you / a/ rehearsing/ , girls/ are !.

7, I / to/ before/ camping/ Shall/ go/ take/ the/ you/ dentist’s ?

8, studying/ we/ lots/ together/ on/ had/ weekends/ of/ fun .

9, in /with / Does/ behave/ her/ lovely/ she/ a / seldom/ way / neighbors/?

10, walk/ tonight/ has/ a/ he/ go/ to/ with/ girl friend/ out/ his/for/.

#Mẫu giáo

14

NT

Nguyễn Trang Như

16 tháng 4 2016

nhiều quá ai mà giải nổi hả bạn, bạn chịu khó ghi ra từng câu rồi mọi người sẽ giải giúp bạn nhé !!

Đúng(0)

LI

Life is good

16 tháng 4 2016

ko dc

Đúng(0)

DM

Dương Minh

5 tháng 10 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 below.Because writing has become so important in our culture, we sometimes think of it as more real than speech. A little thought, however, will show why speech is primary and writing secondary to language. Human beings have been writing (as far as we can tell from surviving evidence) for at least 5000 years; but they have been talking for much longer,...

Đọc tiếp

#Mẫu giáo

1

NH

Nguyen Hoang Hai

5 tháng 10 2019

Tác giả trong bài đọc tranh luận rằng _________

A. Nói là ngôn ngữ cơ bản hơn viết

B. viết trở nên quá quan trọng trong xã hội ngày nay

C. tất cả những người học để nói chuyện phải tìm hiểu để viết

D. tất cả các ngôn ngữ cần phải có một hình thức viết

Dẫn chứng: “Furthermore, we all learn to talk well before we learn to write; any human child who is not severely handicapped physically or mentally will learn to talk: a normal human being cannot be prevented from doing so.”

Tạm dịch:Hơn nữa, tất cả chúng ta học cách nói tốt trước khi chúng ta học viết; bất kỳ đứa trẻ nào mà không bị khuyết tật nghiêm trọng về thể chất hay tinh thần sẽ học nói: một người bình thường không thể bị ngăn cản làm việc đó

Đáp án A

Đúng(0)

DM

Dương Minh

1 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 below.Because writing has become so important in our culture, we sometimes think of it as more real than speech. A little thought, however, will show why speech is primary and writing secondary to language. Human beings have been writing (as far as we can tell from surviving evidence) for at least 5000 years; but they have been talking for much longer,...

Đọc tiếp

#Mẫu giáo

1

NH

Nguyen Hoang Hai

1 tháng 5 2019

Để thể hiên rằng học viết cần phải nỗ lực, tác giả đưa ra ví dụ về ___________

A. những người tìm hiểu nguyên lý cơ bản của lời nói

B. trẻ em khuyết tật nặng

C. những người thông minh không thể viết

D. những người nói nhiều ngôn ngữ

Dẫn chứng: “On the other hand, it takes a special effort to learn to write. In the past many intelligent and useful members of society did not acquire the skill……..,”

Tạm dịch: mặt khác, nó cần một nỗ lực đặc biệt để học viết. Trong quá khứ nhiều thành viên thông minh và hữu ích của xã hội đã không có được kỹ năng đó…..,

Đáp án C

Đúng(0)

DM

Dương Minh

8 tháng 11 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.For a time, the Hubble telescope was the brunt of jokes and subject to the wrath of those who believed the U.S. government had spent too much money on space projects that served no valid purpose. The Hubble was sent into orbit with a satellite by the Space Shuttle Discovery in 1990 amid huge hype and expectation. Yet after it was in position, it simply...

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.

For a time, the Hubble telescope was the brunt of jokes and subject to the wrath of those who believed the U.S. government had spent too much money on space projects that served no valid purpose. The Hubble was sent into orbit with a satellite by the Space Shuttle Discovery in 1990 amid huge hype and expectation. Yet after it was in position, it simply did not work, because the primary mirror was misshapen. It was not until 1993 that the crew of the Shuttle Endeavor arrived like roadside mechanics, opened the hatch that was installed for the purpose, and replaced the defective mirror with a good one.

Suddenly, all that had originally been expected came true. The Hubble telescope was indeed the “window on the universe,” as it had originally been dubbed. When you look deep into space, you are actually looking back through time, because even though light travels at 186,000 miles a second, it requires time to get from one place to another. In fact, it is said that in some cases, the Hubble telescope is looking back eleven billion years to see galaxies already forming. The distant galaxies are speeding away from Earth, some traveling at the speed of light.

Hubble has viewed exploding stars such as the Eta Carinae, which clearly displayed clouds of gas and dust billowing outward from its poles at 1.5 million miles an hour. Prior to Hubble, it was visible from traditional telescopes on earth, but its details were not ascertainable. But now, the evidence of the explosion is obvious. The star still burns five million times brighter than the sun and illuminates clouds from the inside.

Hubble has also provided a close look at black holes, which are described as cosmic drains. Gas and dust swirl around the drain and are slowly sucked in by the incredible gravity. It has also looked into an area that looked empty to the naked eye and, within a region the size of a grain of sand, located layer upon layer of galaxies, with each galaxy consisting of billions of stars.

The Hubble telescope was named after Edwin Hubble, a 1920s astronomer who developed a formula that expresses the proportional relationship of distances between clusters of galaxies and the speeds at which they travel. Astronomers use stars known as Cepheid variables to measure distances in space. These stars dim and brighten from time to time, and they are photographed over time and charted. All the discoveries made by Hubble have allowed astronomers to learn more about the formation of early galaxies.

According to the passage, a Cepheid variable is __________ .

A. a mirror

B. a star

C. a Hubble calculations

D. the dimming and brightening of a star

#Mẫu giáo

1