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Mercury is the smallest member of the sun's family. It is only 3.100 miles across. It is also the sun's swiftest planet. Its yearly journey round the sun is only 85 days.

Mercury always keeps one side towards the sun. On this side it is always day, on the other side always night. We only see the lighted side.

Mercury appears to us like a yellowish orange star. The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset. People sometimes call mercury the morning star or evening star.

Mercury is half the size of the earth. Because it is much lighter, it has much less gravity. If you can visit Mercury in a spaceship, you will find it a strange world. Its low gravity makes you feel very light. If your weight on earth is 100 pounds, your weight on Mercury is only 27 pounds. Looking at the sun from Mercury, you can see that it's much more brilliant than it is seen from the earth. And the yellow centre of the sun appears three times bigger from Mercury.

On its lighted side, Mercury's temperature is about 300 degrees centigrate. But the dark side is extremely cold, but 150 degrees below zero so mercury is probably the coldest as well as the hottest of the planets.

21. A. Mercury is .......

A. the sun's fastest planet B. the coldest planet

C. the hottest planet D. all are correct

22. We cannot see the dark side of Mercury because .......

A. it moves very fast.

B. it always appears just before sunrise or soon after sunset.

C. it always keeps one side towards the sun.

D. it is too far for us to see.

23. When can we see Mercury? - We can see it ......

A. just before the sunset

B. just before sunrise

C. after the sunset

D. both A and C are correct

24. Why do we weigh much on the earth than on Mercury? - Because .......

A. Mercury is nearer to the sun. B. Mercury has got less gravity than the earth.

C. Mercury is much hotter. D. none are correct.

25. Why does the sun look bigger when it is seen from Mercury?

- Because .......

A. Mercury is the smallest planet of the sun.

B. Mercury is nearer to the sun.

C. Mercury is a light planet.

D. It only takes Mercury 88 days to move round the sun.

Chọn đáp án và giải thích chi tiết

1
14 tháng 8 2020

1/ swift= fast=> A

2/ Mercury always keeps one side towards the sun=> C

3/ The nearest planet to the sun, it is always seen near the sun, either just before sunrise or soon after sunset => B

4/ Because it is much lighter, it has much less gravity. => B

5/ B bởi gần thì nhìn mới to chứ :v

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionThe word distinguishing as it is used in this selection means ________.

A. elevating in nature

B. characteristics like all other planets

C. devastating in nature

D. characteristics that set it apart from other planets

2
29 tháng 6 2019

Đáp án D.

3 tháng 3 2022

D nhé bn

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionApproximately how much of the Earth’s atmosphere is nitrogen?

A. One-fourth

B. One-half

C. Three-fourths

D. All of it

2
28 tháng 5 2018

Đáp án C.

3 tháng 3 2022

C

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionThe main idea of this passage is that ________.

A. Earth is predominantly water.

B. There are life-supporting characteristics on Eart

C. Earth is the only planet with a moon

D. Earth has no common characteristics with other planets

2
7 tháng 10 2018

Đáp án B.

3 tháng 3 2022

B

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionWhat two factors help protect the Earth from radiation?

A. Magnetic field and atmosphere

B. Blue waters and white clouds

C. Rapid spin and molten nickel-iron core

D. The Sun and the Moon

2
24 tháng 11 2017

Đáp án A.

3 tháng 3 2022

A

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionIt’s probable that the next paragraph would discuss ________.

A. people on planets

B. the solar system as a whole

C. rings around Saturn

D. the Earth’s natural satellite – the moon

2
21 tháng 11 2018

Đáp án D.

3 tháng 3 2022

D

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionWhich of the following helps to create the Earth’s magnetic fields?

A. Its blue waters

B. Its nitrogen atmosphere

C. Its molten metal core

D. The moon

2
17 tháng 12 2018

Đáp án C.

3 tháng 3 2022

C

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.   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from...
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.

   As viewed from space, Earth’s distinguishing characteristics are its blue waters and white clouds. Enveloped by an ocean of air consisting of 78% nitrogen and 21% oxygen, the planet is the only one in our solar system known to harbor life. Circling the Sun at an average distance of 149 million kilometers (93 million miles), Earth is the third planet from the Sun and the fifth largest planet in the solar system.

 

   Our planet’s rapid spin and molten nickel-iron core give rise to an extensive magnetic field which, coupled the atmosphere, shields us from nearly all of the harmful radiation coming from the Sun and other stars. Earth’s atmosphere protects us from meteors as well, most of which burn up in the Earth’s atmosphere before they can strike the surface. The planet active geological processes have left no evidence of the ancient pelting it almost certainly received soon after it formed about 4.6 billion years ago. The Earth has a single natural satellite – the moon.

QuestionThe word consisting most nearly means ________.

A. hardening

B. withholding

C. containing

D. shortening

2
12 tháng 3 2019

Đáp án C.

3 tháng 3 2022

C

I. use a relative pronoun to combine each pair of sentences. put in the commas where necessary 3. there are some words. they are very difficult to translate 4. the sun provides us with heat and light. it is one of milions of stars in the universe 5. students will be punished. their homework is late 6. i was looking for a book this morning. i've found it now 7. is that the car? you want to buy it 8. sandra works in advertising. you were talking to her 9. lake Prespa is a lonely beautiful...
Đọc tiếp

I. use a relative pronoun to combine each pair of sentences. put in the commas where necessary

3. there are some words. they are very difficult to translate

4. the sun provides us with heat and light. it is one of milions of stars in the universe

5. students will be punished. their homework is late

6. i was looking for a book this morning. i've found it now

7. is that the car? you want to buy it

8. sandra works in advertising. you were talking to her

9. lake Prespa is a lonely beautiful lake. it's on the north Greek border

10. the little girl ate sweets the whole way. she sat next to me on the coach

11. is Zedco a company? it was taken over last year

12. Felix Reeve is a journalist. his tape recorder was stolen

13 this famous picture is worth thousands of punds. it was damaged during the war

14. i don't know the name of the woman. i spoke to her on the phone

15. we often go to visit our friends in Bristol. it is only 30 miles away

16. this is Mr. Carter. i was telling you about him

17. they've caotured all the animals. they escaped from the zoo

18. a scientist has won the Nobel Prize. He discovered a new planet

19. the river is the Wye. it flows through Hereford

20. we climbed to the top of the tower. we had a beautiful view from there

1
3 tháng 10 2018

I. use a relative pronoun to combine each pair of sentences. put in the commas where necessary

3. there are some words. they are very difficult to translate

-> There are some words which are very difficult to translate

4. the sun provides us with heat and light. it is one of milions of stars in the universe

-> The sun, which is one of milions of stars in the universe, provides us with heat and light

5. students will be punished. their homework is late

-> Students whose homework is late will be punished

6. i was looking for a book this morning. i've found it now

-> Now I've found the book (which) I was looking for this morning

7. is that the car? you want to buy it

-> Is that the car (which) you want to buy ?

8. sandra works in advertising. you were talking to her

-> Sandra, whom you were talking to, works in advertising

9. lake Prespa is a lonely beautiful lake. it's on the north Greek border

-> Lake Prespa, which is on the north Greek border, is a lonely beautiful lake

10. the little girl ate sweets the whole way. she sat next to me on the coach

-> The little girl who sat next to me on the coach ate sweets the whole way

11. is Zedco a company? it was taken over last year

-> Is Zedco a company which was taken over last year ?

12. Felix Reeve is a journalist. his tape recorder was stolen

-> Felix Reeve, whose tape recorder was stolen, is a journalist

13 this famous picture is worth thousands of punds. it was damaged during the war

-> This famous picture which was damaged during the war is worth thousands of pounds

14. i don't know the name of the woman. i spoke to her on the phone

-> I don't know the name of the woman (whom) I spoke to on the phone

15. we often go to visit our friends in Bristol. it is only 30 miles away

-> We often go to visit our friends in Bristol which is only 30 miles away

16. this is Mr. Carter. i was telling you about him

-> This is Mr. Carter whom I was telling you about

17. they've caotured all the animals. they escaped from the zoo

-> They've captured all the animals escaped from the zoo

18. a scientist has won the Nobel Prize. He discovered a new planet

-> A scientist who discovered a new planet has won the Nobel Prize

19. the river is the Wye. it flows through Hereford

-> The river which flows through Hereford is the Wye

20. we climbed to the top of the tower. we had a beautiful view from there

-> We climbed to the top of the tower, from which had a beautiful view

* Những từ mình đặt trong ngoặc là những từ có cũng được mà không có cũng không sao nha *

6 tháng 1 2019

We're having a great time here. It's beautiful, and the sun (1) ..is.. shining. Yesterday I went water-skiing ! What (2) ...do. you think of that ?

I'm (3) ..sitting.. at a table in our hotel room and writting a few postcards. The room is fine, but we (4) ..don't.. like the food very much. But it (5) ..doesn't.. matter because we (6) ...go. out to a restaurant every evening.

We're both (7) ..being.. very lazy at the moment. I (8) ..get.. up quite late in the morning, and Nigel (9) ..gets.. up even later. You know of course how much Nigel's work (10) ..important.. to him and how he's (11) ..often.. talking about it. Well, the holiday is so good that he's forgotten all about work. So it's the perfect holiday. The only prolem is that it's (12) ..wasting.. us a lot of money. But we'll worry about that later.

5 tháng 1 2019

We're having va great time here. It's beautiful, and the sun (1) ..is.. shining. Yesterday I went water-skiing ! What (2) ...do. you think of that ?

I'm (3) ..not.. at a table in our hotel room and writting a few postcards. The room is fine, but we (4) ..don't.. like the food very much. But it (5) ..is.. matter because we (6) ...go. out to a restaurant every evening.

We're both (7) ..being.. very lazy at the moment. I (8) ..get.. up quite late in the morning, and Nigel (9) ..gets.. up even later. You know of course how much Nigel's word (10) ..is hard.. to him and how he's (11) ..not.. talking about it. Well, the holiday is so good that he's forgotten all about work. So it's the perfect holiday. The only prolem is that it's (12) ..wasting.. us a lot of money. But we'll worry about that later.