Số 0,05 viết  thành tỉ số % là

tính nhanh 20,21 : 0,5 + 20,21 : 0,25 - 20,21 : 0,125 + 86

Một cái thùng hình lập phương đựng đầy dầu có cạnh 0,5m. Hỏi cả thùng dầu nặng bao nhiêu ki-lô-gam biết mỗi lít dầu nặng 1,7kg và thùng không dầu nặng 3,2kg? (1 dm3=1l)! Giúp mình đi, rồi mik tick cho nha!!!!!

I. Choose the word or phrase which best completes each of the following sentences. Indicate your answer by
writing A, B, C or D on the answer sheet. (0.4pt/each)
1. We sometimes ...................... to the National Museum, but I’m not really interested in old things.
A. goes                        B. go                           C. are going                             D. have gone
2. She is too busy to think of any kind of entertainment. She ...................... goes out with her friends.
A. hardly                     B. always                    C. usually                                D. regularly
3. The kids ...................... for their dad to take them home, but he hasn’t arrived yet.
A. waiting                   B. wait                        C. waited                                D. are waiting
4. He ...................... at the meeting on Monday because he was away on business.
A. didn’t                     B. wasn’t                     C. hasn’t                                  D. isn’t
5. How fast .......................... when the accident happened?
A. did he drive            B. was he driving        C. he was driving                    D. is he driving
6. What time _________ work? At 5.00
A. are you usually finish                                 B. you usually finish
C. usually you finish                                       D. do you usually finish
7. It was a sad story ...................... it had a happy ending.
A. because                   B. so                            C. although                             D. when
8. Who ...................... to Italy last year?
A. did go with            B. went with you        C. you went with                    D. you did go with
9. He stood up immediately. .................. , he ran after the girl.
A. After                      B. Next that                C. After that                           D. After then
10. My father is standing next to me in the picture. He is quite short and a bit ....................
A. medium weight      B. extra weight           C. overweight                         D. heavy weight
11. My brother is very .................... . He enjoys giving things to people.
A. mean                       B. funny                      C. generous                             D. talkative
12. My baby girl always thinks she is a princess. She wears lots of sparkling necklaces around her neck and
............... around her wrist.
A. rings                       B. scarves                    C. bracelets                             D. socks
13. They spent the morning .................... the museum.
A. in                            B. at                            C. in front                               D. on
14. What kind of presents did you often get .................. Christmas when you were small?
A. on                           B. in                            C. at                                        D. of
15. The best moment to enjoy in my life was when I ................... on Australian Bondi beach.
A. sunbathed               B. swam                      C. went skiing                         D. sightseeing
16. I’d love to travel and explore the world but until now I have never gone..................
A. abroad                    B. shopping                 C. cycling                                D. sailing
17. I’d like to .................. Rosie out to dinner at the weekend, but I’m afraid she will refuse.
A. meet                       B. get                          C. invite                                  D. have
18. If you don’t mind, please ............... me your home phone number, so I can contact you in the evening.
A. take                        B. have                        C. give                                     D. get
19. We ............... a wonderful evening on Saturday. It was a great party.
A. were                       B. had                         C. got                                      D. took
20. (At a hotel): ‘I have a problem with the Wi-fi in my room. I can’t get a signal.’
‘I’m sorry, sir. I’ll .................... to IT.’
A. put you through     B. send you up            C. call you                               D. talk to you

1.             _______  It’s a clean source of energy. Sailboats couldn’t move without this power.

2.             _______  It can be found in only some places of the earth. It comes from depth inside the earth.

3.             _______  This energy can be dangerous. It was used to make bombs in World War II.

4.             _______  They will be run out within a relatively short time. The first letters of the words are both

“f”.

5.             _______  We can make this energy almost every day. Panels are used to create this energy.

6.             _______  When it moves from a high place to a lower place, it makes energy. This energy is used to create electricity. 

As I remember, (1) in the 50s and 60s, Ha Noi was not as crowded as it is today. Bicycles and cyclos were the main means of transport and the few motorbikes that were around were (2) by rich people. It was rare to see cars or jeeps.

Meanwhile, the tram was the only method of public transport. An old tram station is now home (3) several retail outlets that look out over the lake in Dinh Tien Hoang Street.

At that time, Hanoians always travelled by tram, not only for its (4) but also the price. For just five cents you could travel one-way to it’s terminus in the former Ha Dong Province, (5) is now part of the expanded Ha Noi.

I still remember on (6) from school, my friends and I would go to the lake to catch the tram to Botanical Garden. The sound, clang-clang, clang-clang could be regularly heard from early in the morning until late in the evening, come rain or (7) . Time, ... decades have passed, but there is still a clang (8) in my mind from my childhood.

1. a. move b. place c. set d. back

2. a. bought b. owned c. sold d. proceeded

3. a. with b. in c. to d. by

4. a. convenience b. importance c. comfort d. condition

5. a. that b. which c. where d. this

6. a. days out b. out days c. off days d. days off

7. a. light b. rise c. shine d. brighten

8. a. somewhat b. somewhere c. somehow d. someway

1.      Mark Twain was famous _________ his exciting adventure stories.

A.  for B. at    C. of    D. with

2.      My tooth is painful. I must go to see the dentist and get it _________________.

A.  pull out       B. to pull out   C. pulled out   D. pulling out

3.      These days almost everybody ________________ the danger of smoking.

A.  know of      B. is aware about        C. is aware of D. are aware of

4.      I’m sorry, I opened your letter instead ______________ mine.

A.  up   B. of    C. in    D. on

5.      What’s ___________________ here?  What have you done with my documents?

A.  going to happen     B. going on     C. going along             D. gone on

6.      Gravity, _______________ by Isaac Newton, is being widely applied in physics.

A.  discover      B. discovered C. discovering             D. to discover

7.      Ah, you must be Mary’s husband. Do come in and ____________ every one.

A.  see B. look            C. find             D. meet

8.      There is water below the earth’s surface _____________ everywhere.

A.  most           B. in    C. most of       D. almost

9.      Travellers __________________ their reservations well in advance if they want to fly during the Christmas holidays.

A.  had better get         B. had to get better     C. had better to get     D. had better got

10.  Oh no! It’s already 5 p.m, but I haven’t ____________________ the letters.

A.  finished typing B. been finished typing C. finish to type                 D. been finishing typing 

11.  The United States spends more money on advertising _____________ country in the world.

A.  than many B. other than   C. than any other        D. than other

12.  I remember _____________ the letter a few days ago but I can’t remember exactly when.

A.  to receive    B. received      C. receiving     D. I receive

13.  Look! The yard is wet. It _______________ last night.

A.  must rain    B. couldn’t have rained C. must have rained D. should have rained 14. Could you please tell me when _______________?

            A. does the next train leave B. the next train leaves C. the next train leave D. the train next leave

15.  “I saw you studying at the library last night.”

            A. couldn’t have         B. might have C. wouldn’t have        D. shouldn’t have

16.  Many of his friends found it surprising ______________ his career as a worker in a steel factory.

19.  He doesn’t write to his parents as often as he ________________.

A.  used to       B. use to          C. got used to D. get used to

20.  She’s a law student and she ________________ for four years now.

A.  studies        B. is studying C. has been studying   D. studied

 giúp với mik cần gấp 

1.     The TV set has broken down. I’ll phone the _______________. (ELECTRIC)

2.     I don’t find him very communicative. (COMMUNICATE)

3.     Recent achievements in science and _______________ have given us instant and world-wide communication. (TECHNICAL)

4.     He is out of work. He is _______________. (EMPLOY)

5.     He got mark 9. It’s a(n) _______________ result. (COURAGE)

6.     Their office equipment needs to be _______________. (MODERN)

7.     Look at this picture of Bill and his father. You can see clearly the _______________, aren’t you? (LIKE)

1.  They are going to build a bridge across the river.

A.  They will be building a bridge across the river.

B.   People are planning to build a bridge across the river.

C.   A bridge across the river is going to be built.

D.  A bridge across the river will be being built.

2.  My father hardly believes in ghost stories.

A.  My father never believes in ghost stories.

B.   Ghost stories are not what for my father to believe.

C.   It’s impossible my father believes in ghost stories.

D.  It’s unusual for my father to believe in ghost stories.

3.  We have run out of rice today.

A.  We have run in the street to buy rice today.

B.   We have been out in the market to buy rice today.

C.   There’s no rice left for us today.

D.  There is not any rice in our house today. 4. I wish I hadn’t told you the news.

            A. I am regretting to tell you the news.          B. I regret to tell you the news.

            C. I regretted to tell you the news.     D. I regret having told you the news.

5. She is so intelligent that she understands everything very quickly.

A.  So intelligent is she that she understands everything very quickly.

B.   She is very intelligent that she understands everything very quickly.

C.   An intelligent student she is that she understands everything very quickly.

Such an intelligent student she is so that