Hãy phân biệt ý nghĩa của các câu lệnh Pascal sau đây:

Writeln('5+20=' , '20+5') ; và Writeln('5+20=' , 20+5);

Hai lệnh sau có tương đương với nhau không? Tại sao?

Viết đoạn kết bài mở rộng Tả cây tre ở làng quê.
 

Educating children at home as an alternative to formal education is an option chosen by families in many parts of the world. The homeschooling movement is popular in the United States, where close to one million Children are educated at home. In Canada, 1 percent of school-age children are homeschooled, and the idea also enjoys growing popularity in Australia, where 20,000 families homeschool their children. The movement is not limited to these countries. Homeschooling families can be found all over the world, from Japan to Taiwan to Argentina to South Africa.

         Homeschooling is not a novel idea. In fact, the idea of sending children to spend most of their day away from home at a formal school is a relatively new custom. In the United States, for example, it was not until the latter part of the nineteenth century that state governments began making school attendance compulsory. Before that, the concept of a formal education was not so widespread. Children learned the skills they would need for adult life at home from tutors or their parents, through formal instruction or by working side by side with the adults of the family.

When his parents are away, his oldest brother..................

   A. knocks it off                 B. calls the shots               C. draws the line               D. is in the same boat

Số chất ứng với công thức phân tử $C_2{H}_4{O}_2$tác dụng được với đá vôi là

   A. 1.                                  B. 2.                                  C. 3.                                  D. 4.

UNIT 9: CITIES OF THE WORLD

I. Choose the word whose underlined part is pronounced differently from the others.

1. a. prize b. excite c. design d. capital

2. a. cold b. photo c. continent d. poster

3. a. city b. capital c. nice d. excite

4. a. designed b. received c. cycled d. rewarded

5. a. tomorrow b. tower c. crowd d. around

II. Circle the odd one out.

6. A.Mexico B. Asia C. South Africa D. Australia

7. A.Amsterdam B. Stockholm C. Sweden D. Rio de Janeiro

8 A.sunny B. delicious C. cloudy D. awful

9. A.Times Square B. Big Ben C. Merlion D. Dickens

10.A.German B. American C. Italy D. English

III. Choose the word that is opposite in meaning to the underlined word. ( Chọn từ trái nghĩa với từ bị gạch chân)

11.Rio de Janeiro is an exciting city.

a. interesting b. dangerous c. boring d. expensive

12.The beaches in Sydney are clean and beautiful.

a. clear b. dirty c. famous d. fresh

13.It’s dangerous to walk around the city at night.

a. safe b. exciting c. cold d. popular

14.The dish is delicious with cheese.

a. tasty b. pleasant c. fatty d. awful

15.York is a historic city in North Yorkshire.

a. exciting b. modern c. famous d. quiet

16.The streets were very noisy throughout the night.

a. crowded b. busy c. quiet d. empty

17.That modern building is so ugly!

a. big b. impressive c. unattractive d. beautiful

18.We didn’t go camping last weekend. The weather was awful.

a. unpleasant b. nice c. bad d. terrible

IV. Write the comparative or superlative of the adjectives in brackets.

19.It’s today ____________ than it was yesterday. (warm)

20.Rio de Janeiro is one of ____________ cities in the world. (beautiful)

21.The second question was ____________ than the first one. (difficult)

22.Australia is ____________ continent on Earth. (old)

23.China is ____________ country in the world. (populated)

24.My exam results were ____________ than I expected. (bad)

25.Ms. Nicholson is ____________ teacher I’ve ever known. (good)

26.The city is ____________ than it used to be. (crowded)

27.Tokyo is still the world’s ____________ city with 37 million inhabitants. (large)

Electronic learning is a technology of education that implies self-motivation, communication, efficiency, and technology. E-learning is effective as it eliminates distances because the E-learning content is designed with media that can be accessed from properly equipped computers, and other means of internet accessible technology. 

        E-learning has its own advantages. However, the most important advantages lay in the reduction of time, efforts and cost.

       Furthermore, we can talk about the following advantages of E-learning with the increasing of communication between the student and themselves and between the students and the schools. A fast and easy way is needed to bring ever body together.

        Throughout different directions such as discussing forums, email, and chat rooms, researcher think that these things increase and motivate students to participate and react with the subjects in question.

          Another advantage of e-learning is that it makes all students feel equal. Since the communication tools give each students the opportunity to express his own opinion clearly and directly at any time without being embarrassed, in contrary to the traditional teaching halls which don’t have such feature due to the bad distribution of the tables or because of shyness or other reasons.

         E-learning provides teacher with great facilities that are accessible out of working hours, that is because the learner can send the inquiries to the teacher through the e-mail at any time, yet this feature is more useful and suitable for the teacher instead of being restricted at his desk.

       By e-learning, the attendance is not necessary as the new technology provides the communication methods without the need to be available in a specific place or time.

T / F

tôi yêu bạn viết bằng tiếng anh

For many people who live in cities, parks are an important part

of the landscape. They provide a place

for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people

often overlook is that parks also provide considerable environmental benefits.

One benefit of parks is that plants absorb carbon dioxide-a key pollutant-and emit oxygen which

humans need to breathe. According to one study, an acre of

trees can absorb the same amount of carbon

dioxide that a typical car emits in 11,000 miles of driving

Parks also make cities cooler. Scientists have long

noted what is called the Urban Heat Island Effect: building

materials such as metal, concrete, and asphalt

absorb much more of the sun's heat and release it much more

quickly than organic surfaces like trees and

grass. Because city landscapes contain so much of these

building materials, cities are usually warmer than surrounding rural areas, Parks and other green spaces help to

mitigate the Urban Heat Island Effect.

Unfortunately, many cities cannot easily create more parks

because most land is already being used for buildings, roads, parking lots, and other essential parts of

the urban environment. However, cities could

benefit from many of the positive effects of parks by

encouraging citizens to create another type of green space: rooftop gardens. While most people would not think of

starting a garden on their roof, human beings

have been planting gardens on rooftops for thousands of

years. Some rooftop gardens are very complex and

require complicated engineering, but others are simple

container gardens that anyone can create with the

investment of a few hundred dollars and a few hours of work Rooftop gardens provide many of the same benefits as other require complicated engineering, but others Heat Island Effect, which can save people money. In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills. Rooftop vegetable and herb gardens can also provide fresh food for city dwellers, saving them money and making their diets everyone can enjoy, they are also a smart environmental investment.

7) Which of the following pieces of information would, if true, most weaken the author's claim that rooftop gardens are good for the environment?

A. Parks have many benefits that rooftop gardens do not share

B. More pollution is produced during rooftop garden construction than rooftop plants can remove from the air.

C. Extremely high winds atop tall city buildings can severely damage some plants.

D. The overall environmental benefits that result from driving less exceed those of planting a rooftop garden.

8) Which of the following best describes the organization of the passage?

A. A hypothesis is stated and then analyzed.

B. A proposal is evaluated and alternatives are explored.

C. A viewpoint is established and then defended.

D. A thesis is presented and then supported.

9) Based on information in the passage, it can be inferred that the author would most likely endorse a program that

A permitted the construction of buildings in city park land provided they have rooftop gardens

B. extended discounts on plants to customers who use them to create rooftop gardens

C. offered free admission to schools willing to take their students on field trips to the city park

D. promised vacation getaways to cooler destinations for those trapped in the city at the peak of summer

Chọn câu trả lời đúng và giải thích tại sao ?? 

They will ask you a lot of questions at the interview.

Ex1: Fill in the gaps so as to build correct type 3 conditional sentences.

1. If you _________ (have) some protection, you _________ (damage) your eyes.

2. It ______ (be) impossible to enter the building if the porter _____ (not / be) there.

3. If the flight hadn’t been delayed, my boss __________ (arrive) on time to the meeting.

4. If the driver ________ (stop) at the red sign, I _________ (not / have) the accident.

5. I __________ (eat) the soup if it __________ (not / be) so salty.

6. If the thieves __ (rob) the whole jewellery store, the owners would have been ruined.

7. If you ________ (take) your umbrella, you ________ (not / catch) a cold.

8. I __________ (manage) to escape the storm if I __________ (be) more cautious.

9. The burglars ______ (escape) to a foreign country if the police ____ (not / catch) them.

10. If you _______ (learn) to play the piano, you could have participated in the contest.

11. If you ______ (study) more, you ______ (get) a better mark.

12. There _____ (be) a fight if the police ________ (not / arrive) in time.

Ex2: Fill in the blanks with either second or third conditional. 

1. You ____________ (notice) my new haircut if you had been more attentive.

2. If you _____________ (enjoy) modern art, we could visit the new exhibition.

3. If you had eaten at lunch, you ______________ (not / be) so hungry now.

4. If there were an ashtray in the house, we _____________ (not / need) to go to the balcony to smoke a cigarette.

5. I would apply for the job if I ____________ (know) how to write an application letter.

6. If I _____________ (go) to the job interview, I might have got the job.

7. You would need to find another job if you _____________ (move) to a new town.

8. I would exercise twice a day if I _____________ (have) more time.

9. If the T-shirt _____________ (not / be) so loose, I would wear it.

10. If the factory ______________ (not / close), many workers wouldn’t be unemployed.

11. If there hadn’t been for the snow, most European airports ___ (not / close) during Christmas time.

12. If there wasn’t for the fire, we _______________ (freeze) to death.

13. I would eat your adorable meatloaf if I _____________ (not / be) a vegetarian.