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When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important single fact about it-at this moment in time. It appears probable, however, that sunlight will be the color we know for only a negligibly small part of the Sun's history. Stars, like individuals, age and change. As we look out into space, We see around us stars at all stages of evolution. There are faint blood-red dwarfs so cool that their surface temperature is a...
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When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important single fact about it-at this moment in time.

It appears probable, however, that sunlight will be the color we know for only a negligibly small part of the Sun's history. Stars, like individuals, age and change. As we look out into space, We see around us stars at all stages of evolution. There are faint blood-red dwarfs so cool that their surface temperature is a mere 4,000 degrees Fahrenheit, there are searing ghosts blazing at 100, 000 degrees Fahrenheit and almost too hot to be seen, for the great part of their radiation is in the invisible ultraviolet range. Obviously, the "daylight" produced by any star depends on its temperature; today(and for ages to come) our Sun is at about 10,000 degrees Fahrenheit, and this means that most of the Sun's light is concentrated in the yellow band of the spectrum, falling slowly in intensity toward both the longer and shorter light waves.

That yellow "hump" will shift as the Sun evolves, and the light of day will change accordingly. It is natural to assume that as the Sun grows older, and uses up its hydrogen fuel-which it is now doing at the spanking rate of half a billion tons a second- it will become steadily colder and redder.

1. What is the passage mainly about?

(A) Faint dwarf stars (B) The evolutionary cycle of the Sun

(C) The Sun's fuel problem (D) The dangers of invisible radiation

2. What does the author say is especially important about the Sun at the present time?

(A) It appears yellow (B) It always remains the same

(C) It has a short history (D) It is too cold

3. Why are very hot stars referred to as "ghosts"?

(A) They are short- lived. (B) They are mysterious.

(C) They are frightening. (D) They are nearly invisible.

4. According to the passage as the Sun continues to age, it is likely to become what color?

(A) Yellow (B) Violet (C) Red (D) White

5. In line 15, to which of the following does "it" refer?

(A) yellow "hump" (B) day (C) Sun (D) hydrogen fuel

Help me! Thank you!

1
6 tháng 12 2016

Sư Từ đây :)))

Bài 3: Điền vào chỗ trống dạng so sánh đúng của từ trong ngoặc.1. He is (clever) ……………………. student in my group. 2. She can’t stay (long) …………………….than 30 minutes.3. It’s (good) ……………………. holiday I’ve had.4. Well, the place looks (clean) …………………….now.5. The red shirt is better but it’s (expensive) ……………………. than the white one. 6. I’ll try to finish the job...
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Bài 3: Điền vào chỗ trống dạng so sánh đúng của từ trong ngoặc.

1. He is (clever) ……………………. student in my group. 
2. She can’t stay (long) …………………….than 30 minutes.
3. It’s (good) ……………………. holiday I’ve had.
4. Well, the place looks (clean) …………………….now.
5. The red shirt is better but it’s (expensive) ……………………. than the white one. 
6. I’ll try to finish the job (quick).…………………….
7. Being a firefighter is (dangerous) ……………………. than being a builder.
8. Lan sings ( sweet ) ………………..than Hoa
9. This is (exciting) ……………………. film I’ve ever seen.
10. He runs ( fast )………………….of all.
11. My Tam is one of (popular) ……………………. singers in my country.
12. Which planet is (close) ……………………. to the Sun?
13. Carol sings as (beautiful) …………………….as Mary, but Cindy sings the (beautiful) …………………….
14. The weather this summer is even (hot) ……………………. than last summer.
15. Your accent is ( bad ) …………………..than mine.
16. Hot dogs are (good) …………………….than hamburgers. 
17. They live in a (big) ……………………. house, but Fred lives in a (big) ……………………. one.
18. French is considered to be (difficult) …………………….than English, but Chinese is the (difficult)  …………………….language.
19. It’s the (large)……………………. company in the country.



 

6
14 tháng 7 2019

1. He is (clever) ………the cleverest……………. student in my group.
2. She can’t stay (long) ……longer……………….than 30 minutes.
3. It’s (good) …………the best…………. holiday I’ve had.
4. Well, the place looks (clean) ………cleaner…………….now.
5. The red shirt is better but it’s (expensive) ………more expensive……………. than the white one.
6. I’ll try to finish the job (quick).………quickly…………….
7. Being a firefighter is (dangerous) ………more dangerous……………. than being a builder.
8. Lan sings ( sweet ) ……sweetlier …………..than Hoa
9. This is (exciting) ……the most exciting ………………. film I’ve ever seen.
10. He runs ( fast )………fastest………….of all.
11. My Tam is one of (popular) …………the most popular…………. singers in my country.
12. Which planet is (close) …………the closest…………. to the Sun?
13. Carol sings as (beautiful) …………beautifully………….as Mary, but Cindy sings the (beautiful) ………beautifulliest…………….
14. The weather this summer is even (hot) …………hotter…………. than last summer.
15. Your accent is ( bad ) ……worse……………..than mine.
16. Hot dogs are (good) ……better……………….than hamburgers.
17. They live in a (big) ………big……………. house, but Fred lives in a (big) ……………bigger………. one.
18. French is considered to be (difficult) ………more difficult…………….than English, but Chinese is the (difficult) ………most dificult…………….language.
19. It’s the (large)…………largest…………. company in the country.

8 tháng 10 2016

1. He is (clever) ………the cleverest……………. student in my group. 
2. She can’t stay (long) ……longer……………….than 30 minutes.
3. It’s (good) …………the best…………. holiday I’ve had.
4. Well, the place looks (clean) ………cleaner…………….now.
5. The red shirt is better but it’s (expensive) ………more expensive……………. than the white one. 
6. I’ll try to finish the job (quick).………quickly…………….
7. Being a firefighter is (dangerous) ………more dangerous……………. than being a builder.
8. Lan sings ( sweet ) ……sweetlier …………..than Hoa
9. This is (exciting) ……the most exciting ………………. film I’ve ever seen.
10. He runs ( fast )………fastest………….of all.
11. My Tam is one of (popular) …………the most popular…………. singers in my country.
12. Which planet is (close) …………the closest…………. to the Sun?
13. Carol sings as (beautiful) …………beautifully………….as Mary, but Cindy sings the (beautiful) ………beautifulliest…………….
14. The weather this summer is even (hot) …………hotter…………. than last summer.
15. Your accent is ( bad ) ……worse……………..than mine.
16. Hot dogs are (good) ……better……………….than hamburgers. 
17. They live in a (big) ………big……………. house, but Fred lives in a (big) ……………bigger………. one.
18. French is considered to be (difficult) ………more difficult…………….than English, but Chinese is the (difficult)  ………most dificult…………….language.
19. It’s the (large)…………largest…………. company in the country.

Lan Mau secondary schoolClass: …A3Full name:.......................................................WRITTEN TEST 1School year : 2016-2017English 7 (45 minutes)MarkTeacher’s comments........................................................................................................................................................................................................................................................A. ( LISTENING ( 2.pts)Part 1.Are the sentences true or false? A...
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Lan Mau secondary school
Class: …A3
Full name:.......................................................
WRITTEN TEST 1
School year : 2016-2017
English 7 (45 minutes)


Mark


Teacher’s comments
........................................................................................................................................................................................................................................................


A. ( LISTENING ( 2.pts)
Part 1.Are the sentences true or false?
A good night’s sleep
T
F

1.Some people can sleep well with a television on.



2. It is good to play video games before bed.



3. It is good to turn your mobile off when you go to bed.



4.It is bad to play loud music while you study




Part 2. Complete the sentences with a word from the box.
Earlier in the evening (0) Welcome Turn off
useful advice down low

0. Welcome to the show, Doctor Baker.
1. Do your hardest homework _______________.
2. _______________ your mobile when you go to bed.
3. Play music if you like. But turn the sound _______________.
4. That is very _______________ for our young listeners.
B. LANGUAGE FOCUS: (3,5 pts)
I. Choose the word which has the underlined part pronounced differently from the others. (1.0 p)
1. a. fun b. run c. music d. sun
2. a. relax b. snack c. area d. atlas
3. a. celebration b. collection c. education d. question
4 . a. score b. receive c. scout d. comics
II. Choose the suitable words or phrases for the banks. ( 1,5.point )
1/ Hoa _________ eating Vegetables because it`s good for her health.
A. dislikes B. likes C. hates D. doesn’t like
2.Don’t read in bed, _______ you’ll harm your eyes. A. or B. and C. but D . so
3. It`s good to____ blood because you can save people`s lives.
A. help B. use C. donate D. collect
4. They_____ the beach one week ago. A. cleaned B. clean C. cleaning D. to clean
5.I _________playing board games interesting because I can play them with my friends.
A. think B. find C. say D. tell
6. The room smells bad. Somebody __________ in here.
A.smoke B.smoked C.has smoked
III. Supply the correct forms or tenes of the verbs in parentheses. ( 1.0 point )
1/ Nga________________ her homework yet. ( not do)
2/ Last year, I________________ Hue with my family .( visit)
3/ We ________________ for 3 years. ( learn)
4/ Dou you like ________________ part in " Be a Buddy"? ( take)
C. READING ( 2 pts)
I. Read the passage and answer the questions ( 1.p)
My father has unusual hobby, carving eggshells. As everyone knows, carving eggshells is verry difficult, eggshells are very fragile. My dad can make beautiful pieces of art from empty eggshells. It’s amazing. He started the hobby five years ago arter a trip to the US where he saw some carved eggshells in an art gallergy. My father did not go to class to learn how to carve. He learned everything from the Internet.
What is the hobby of writer’s father?
………………………………………..……………………………………………………..
When did he start the hobby?
……………………………………………………………………………………………...
Why is carving eggshells difficult ?
……………………………………………………………………………………………..
Did he go to class to learn how to carve?
……………………………………………………………………………………………..
II.Read and match sentence 1- 4 to a – d. ( 1.0 point )
Advice
Reason

1.Eat a lot of red fruits and vegetables
2. Eat less high-fat food
3.Don’t read or study when there’s not enough light
4.Eat enough calories.
a. because it is harmful for your eyes.
b. or you will become weak and tired.
c.to keep you from getting fat.
d .because they provide vitamin A, which is good for the eyes.

1………………2……………..3……………….4………………
D. WRITING (2,5 pts)
I. Complete the following sentences with the words given ( 0,5 pt )
1/ My school / donate books for street children/ for 2 years.
→ …………………………………………………………………………………………….
2/ They/ clean- up/ their streets/ yesterday.
→ …………………………………………………………………………………………….
II. Rewrite the sentences so that their meaning doesn’t change:(1pt)
1/ Mary was sick, so she could not go to school.
→ Because …………………………………………………………………………………………….
2. The last time I met him was 3 years ago
→ I haven’t …………………………………………………

1
26 tháng 10 2016

Bạn học lớp cô Lan đúng ko

27 tháng 10 2016

ko bạn mik cop trên mạng

Give correct form of Word:1, What is the (long) ........................................ of this river ?2, I want to (long) ........................... my trousers . They are too short.3, What is the (wide) ...................... of your house ?4, She needs (wide) .................... her knowledge.5, Mr Quang spent his (child) .............................. in Cambodia.6, David Beckham is very (fame) .........................7, He is very rich due to his (fame) .....................8, This...
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Give correct form of Word:

1, What is the (long) ........................................ of this river ?
2, I want to (long) ........................... my trousers . They are too short.
3, What is the (wide) ...................... of your house ?
4, She needs (wide) .................... her knowledge.
5, Mr Quang spent his (child) .............................. in Cambodia.
6, David Beckham is very (fame) .........................
7, He is very rich due to his (fame) .....................
8, This book is very (interest) ....................................
9, Ann is interested in (collect) ............................. coins.
10, She has a big (collect) ............................ of stamps.
11, She becomes a famous (collect) ...............................
12, The door was (lock) ................................ you could come in.
13, She is a (beauty) ....................... girl she also sings (beauty) .......................
14, Don’t use that car . It’s (safe) ..............................
15, You should pay attention to the (safe) ..................... in the kitchen.
16, She drives car (safe) ....................... .She had many accidents.
17, They are (different) ............... . Their (different) ................. can be realized easily.
18, Trung and his brother like (act) .......................... movies very much.
19, We held many (act) .................................on March 26th.
20, Michale Faraday made a lot of (invent) ................... He was a great (invent) ...........
21, Those clothes are (suit) ................... for cold weather.
 

1
5 tháng 3 2017

1. leghth

2. lengthen

3. width

4. widen

5. childhood

6. famous

7. fame

8. interesting

9. collecting

10. collection

11. collector

12. unlocked

13. beautiful_beautiful

14. unsafe

15. safety

16. unsafety

17. different_ difference

18. action

19. activities

20. inventions_ inventor

21. suitable

Chúc bạn học tốt nhéhihi

30 tháng 6 2016

 

Đặt câu hỏi cho từ gạch chân

1.Hoa's father is a farmer.

 What does Hoa's father do ?

2.The doctor works in the hospital. 

=> Where do the doctor work ?

3.The dentist takes care of people's teeth.

Who does take care of people's teeth ?

4. They are playing games with their friends

=> Who are they playing games with ?

5.He is sad because gets bad english marks

Why is he sad ?

6.They travel around the world by plane

=> How do they travel around the world ?

7.They are going to stay in hue for a week

How long are they going to stay in Hue ?

8 tháng 12 2016

1.from - of

2. fewer - less

3. to travel - traveling

4. some - any

5. going - to go

6. weight - weigh

7. hoa will - will hoa

8. a - an

9. saw - see

10. more strong - stronger

4.

Choose the word in the parentheses to complete the following sentences: 1.Each of the girls ...................many books. (has / have/ having/ to have ) 2.I love this painting of an old man. He has such a beautiful .................. smile. ( childhood/ childish/ childless/ childlike ) 3.I never wear yellow because It doesn’t ................. me. (match/ fit/ like/ suit ) 4.Always ..............honest in whatever you do. (to be/ be/ being/ are ) 5.If we use her house, we must pay the...
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Choose the word in the parentheses to complete the following sentences:
1.Each of the girls ...................many books. (has / have/ having/ to have )
2.I love this painting of an old man. He has such a beautiful .................. smile.
( childhood/ childish/ childless/ childlike )
3.I never wear yellow because It doesn’t ................. me. (match/ fit/ like/ suit )
4.Always ..............honest in whatever you do. (to be/ be/ being/ are )
5.If we use her house, we must pay the ................... . (fee/ fare/ rent/ tip )
6.A prisoner ........................ this morning. (is hanged/ is hung/ was hanged/ was hung )
7.Scientists are doing their research work in the ................(museum/office/library/laboratory)
8.The Browns have moved into a huge .................(two-storey house/house of two storey/
two-storeys house/ house two storey )
9.In pain as a result of the fall, he ...............slowly home.(stepped/ wound/limped/sped)
10.I think he’s unwell, he was complaining ...............a headache this morning. (at/ of/ from / against )

27
22 tháng 12 2019

Choose the word in the parentheses to complete the following sentences:
1.Each of the girls ...................many books. (has / have/ having/ to have )
2.I love this painting of an old man. He has such a beautiful .................. smile.
( childhood/ childish/ childless/ childlike )
3.I never wear yellow because It doesn’t ................. me. (match/ fit/ like/ suit )
4.Always ..............honest in whatever you do. (to be/ be/ being/ are )
5.If we use her house, we must pay the ................... . (fee/ fare/ rent/ tip )
6.A prisoner ........................ this morning. (is hanged/ is hung/ was hanged/ was hung )
7.Scientists are doing their research work in the ................(museum/office/library/laboratory)
8.The Browns have moved into a huge .................(two-storey house/house of two storey/
two-storeys house/ house two storey )
9.In pain as a result of the fall, he ...............slowly home.(stepped/ wound/limped/sped)
10.I think he’s unwell, he was complaining ...............a headache this morning. (at/ of/ from / against )

22 tháng 12 2019

Choose the word in the parentheses to complete the following sentences:
1.Each of the girls ...................many books.

(has / have/ having/ to have )
2.I love this painting of an old man. He has such a beautiful .................. smile.
( childhood/ childish/ childless/ childlike )
3.I never wear yellow because It doesn’t ................. me.

(match/ fit/ like/ suit )
4.Always ..............honest in whatever you do.

(to be/ be/ being/ are )
5.If we use her house, we must pay the ................... .

(fee/ fare/ rent/ tip )
6.A prisoner ........................ this morning.

(is hanged/ is hung/ was hanged/ was hung )
7.Scientists are doing their research work in the ................(museum/office/library/laboratory)
8.The Browns have moved into a huge ................

(two-storey house/house of two storey/two-storeys house/ house two storey )
9.In pain as a result of the fall, he ...............slowly home.

(stepped/ wound/limped/sped)
10.I think he’s unwell, he was complaining ...............a headache this morning.

(at/ of/ from / against )

21 tháng 7 2016
  1. No one enjoy (go) …going…….to hospital.
  2. What are you (do)……doing……at the moment? I (watch) ……am watching…….T.V.
  3. We (be) ……have been………students in four years.
  4. A new school (build) ………is built………near our school now.
  5. Will You (be) ……be……..angry if he refuses to help you?
  6. I will send him the message as soon as he (return)……returned…………
  7. A lttle girl can’t spend all her time (listen) ………listening……..to stories.
  8. He sent a telegram for his mother (learn) ………to learn…….good news.
  9. + Where are you?

+ I am upstairs. I (have)………am having……… a bath.

21 tháng 7 2016

II. Give the correct form of the  verbs in brackets to complete the following sentences. (10 marks)- Mỗi đáp án đúng cho 1 điểm.

1 going

2 are …..doing, am watching

3 will be is being built

4 will …be

5 returns

6 listening

7 to learn                     

9. am having