cho pt :\(x^2-2x-m^2+2m=0\)

tìm m để pt có 2 nghiệm phân biệt thỏa mãn \(x_1^2+2x_2=3m\)

Sớm mai thức dậy ảo mờ

Sương giăng mái bếp đợi chờ bình minh

Đông về khói tỏa bản mình

Khói kia tiếc nuối thân mình chẳng bay

(khói sương-Lãng Du Khách)

Cảm nhận về bức tranh thiên nhiên trong đoạn thơ trên

Speech is one of the most important means of communicating. It consists of far more than just
making noises. To talk and also to be understood by other people, we have to speak a language, that is,
we have to use combinations of (23)______that everyone agrees stand for a particular object or idea.
Communication would be impossible if everyone made up their own language.
Learning a language properly is very (24)_____. The basic vocabulary of English is not very
large, and only about 2000 words are needed to speak it quite (25)_____. But the more words you know,
the more ideas you can (26)______and the more precise you can be about their exact meaning.
Words are the (27)_____ thing we use in communicating what we want to say. The way we
(28)______ the words is also very important. Our tone of voice can express many emotions and show
whether we are pleased of angry, for instance.
23 A. systems B. talks C. languages D. sounds
24 A. easy B. important C. expensive D. simple
25 A. fluent B. perfect C. good D. well
26 A. grow B. need C. pass D. express
27 A. most B. main C. certain D. full
28 A. send B. say C. talk D. pass
V. Read the passage carefully and choose the best answer A, B, C or D to each question below. (1.0pt)
Every day on radio, on TV, and in the newspaper, we hear, see or read about many problems in
the world, for example, pollution problems.
Air pollution is the first kind. It mostly comes from fumes released from motorbikes, cars, airplanes,
trains and poisonous gases emitted from factories. Also, waste is dumped any where, even in the city
where many people are living. The second pollution problem is sea pollution. Many people earn their
living from fishing in the sea, and the fish they catch feed many people. But the sea has become so
polluted from oil spills and factory wastes that the fish are dying. This pollution is not only killing the
fish, but is also affecting those people who eat fish.
Seldom do you find a place nowadays that is not polluted. This problem is growing more difficult
every day. We must find a good solution that makes the world a better place to live.
29. We hear, see and read about problems in the world _________
A. every year B. once a week C. every day D. every week
30. What causes the air pollution?
A. fumes from vehicles. B. poisonous gases from factories.
C. waste from everywhere. D. all are correct.
31. The sea has become polluted because of _________
A. oil spills and factories wastes B. polluted land
C. smoke from factories D. people
32. In order to make the world a better place to live, we _________
A. should find a good solution. B. should not prevent pollution

SECTION B: Phonetics (1.0pt)

 Mark the letter A, B or C   on  your answer  sheet to indicate the the word whose underline part differs from the other three in pronunciation in  each of the following questions. You will listen TWICE  . (1.0 pt)

9. a. come             b. once                  c. love         d. continue

10. a. busy             b. visit                   c. museum  d. conversation

11. a. who             b. what                  c. where       d. while

12. a. invite                     b. tropical              c. divide       d. primary

SECTION C : Grammar and vocabulary. (3 pts)

Mark the letter A, B or C   on  your answer  sheet to indicate the appropriate answer to each of the following questions.

13. If he ……me, I will be ready to help him.

        A. ask                     B. will ask            C. asks                           D. to ask

14. Paola needs ............her  writing skill or she will fail in the coming written examination.

        A. to improve          B. improve                      C. improving                   D. to be improved

15. .............you want to keep fit, you should do more exercises.

         A. Although                     B. If                                C. When                D. Whether

16. They enjoy..............to music in the evening.

      A. being listened        B. listened             C. listening            D. listen

17. A daily newspaper was published in Germany in 1550, ……….?

        A. isn’t it                B. is it                            C. was it               D. wasn’t it

18.“Can I try your new camera?” – “__________”

     A. I’m sorry, I can’t. Let’s go now           B. I’m sorry. I’m home late

     C. Sure. I’d love to. Sure                         D. But please be careful with it.

19. In the summer my brother always wears shirts with short……

      A. hands          B. arms                          C. sleeves             D. shoulders

20. This new blouse is lovely, and very…….

     A. fashion                  B. style               C. lifestyle              D. fashionable

21. Lunar New Year is the festival  ………..popular in China, too.

      A. which was            B. which are          C. which is            D. in which

22.”Goodbye . have a nice weekend”.     – “ Goodbye ,    …………….”

      A. Me,too            B. You are welcome    C. not at all               D. the same to you

23.Last  night we came to the show late ............................. the traffic was very bad.

      A. despite                  B. so                       C. although              D. because

24. ould you give me the reasons for……………the Mother's Day?

      A. celebrated              B. celebrating          C. celebration          D. celebrate

SECTION D: Reading comprehension (2pts)

Part 1: Reading the following passage and  mark the letter A, B or C   on  your answer  sheet to indicate the the word or phrase that best fits  each of the numbered blanks from 25 to 28 . (1.0 pt)

   I went to Australia on a student program last year and I like to (25)_______you about it. I was very (26)_______when I knew I was going to Australia because I had never been there before. I didn’t think about the problems of speaking English (27)_______I met my host family. At first I couldn’t communicate with them because my English was so bad. All the five years I had been learning English wasn’t much used at all (28)_______we didn’t have real practice at school. Even though my grammar was good, my pronunciation wasn’t. My problem is pronouncing ‘l’ and ‘r’. For example, Australian people often asked “What do you eat in Vietnam?” I wanted to tell them that we eat rice, but they didn’t understand when I said “We eat lice”…

25.  A. say                      B. tell                             C. talk                  D. speak

26.  A. exciting                B. excites                        C. excited             D. excite

27.  A. after                    B. until                            C. when               D. while

28.  A. although              B. even                           C. because           D. so

Part 2: Read the passage and mark the letter A, B or C   on  your answer  sheet to indicate the correct answer to each of the following questions  (1.0pt).

Ted Robinson has been worried all the week. Last Tuesday he received a letter from the local police. In the letter he was asked to call at the station. Ted wondered why he was wanted by the police, but he went to the station yesterday, and now he is not worried any more. At the station he was told by a smiling police-man that his bicycle had been found. Five years ago, the policeman told him, the bicycle was picked up in a small village four hundred miles away. It’s now being sent to his home by train. Ted was most surprised when he heard the news. He was amused too, because he never expected the bicycle to be found. It was stolen twenty years ago when Ted was a boy of fifteen.

29.  Ted was worried because_________.

A. he didn’t know why the police wanted him    B. he received a letter

C. the police would catch him                   D. he went to the police station yesterday

30.   The police who talked to Ted was_________.

A. worried                B. surprised              C. pleasant               D. small

31.  Why was Ted very surprised when he heard the news?

A. Because his bicycle was found when he was a boy of fifteen.

B. Because his bicycle was stolen 20 years ago.

C. Because the bicycle was sent to him by train.

D. Because he thought he would never find the bicycle.

32.  Which of the following statements is NOT true?

A. Ted is no longer anxious now.

B. Ted is 35 years old now.

C. The policeman told Ted the good news 5 days ago.

D. The police asked Ted to go to their station.

II.  Find the word which has a different sound in the part underlined(1pt).

III. Choose the best answer to complete each sentence(3 pts).

13. Thousands of lives were saved ______the scientists had warned them about the tsunami.

14. That is the girl _________ eyes are beautiful.

15. - “Why don’t we go to the cinema this evening?” - “_________”

16. I ________ in the cafe when my sister came.

17. “Buy me a hat on your way back, _________?”

18. I’ll give you a lift to the supermarket if you _________ in a hurry.

19. Miss Nhung speaks English _______ than you do.

20. My daughter wishes she _________ in Da Nang for the festival next week.

21. Jack said ______________________.

     A. that he is planning a trip then                   C. that he was planning a trip now

     B. he is planning a trip now                            D. he was planning a trip then

 22. The air we breathe mainly consists ______ oxygen and nitrogen.

A.  of                     B. in                             C. off                             D. with

23. Typhoons, floods or droughts can easily ______ a harvest.

     A. finish                       B. destroy                     C. provide                      D. defeat

24. We need to protect our …………. resources.

IV. Choose the best options to complete the text (1.5pt)

The tourist industry is considered to be (25)__ largest industry. Before 1950, one million people traveled abroad each year but by 1990s, the figure had risen to 400 million every year. Such large number of tourists; however, are beginning to cause problems. For example, on the Alps the skiers are destroying the mountains they came to enjoy. Even parts of Mount Everest in the Himalayas are reported to be covered (26) __ old tins, tents and foods that have been thrown away.  But at a time (27)___ we have greater freedom to travel than ever before, more and more people are asking how they can enjoy their holidays without causing problems by spoiling the countryside. Now there is a new holiday guide called “Holidays that don’t cost the earth”. It tells you how you can help the tourist industry by (28)____ your travel agent the right before you go on holiday.

V. Read the passage carefully, then choose the best answer (A, B, C or D ) for each space(1.0 pt)

One of the most urgent environmental problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes, reservoirs and even entire seas have become vast pools of poison. Lake Baikal in Russia is one of the largest lakes in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial wastes which pour into the lake every day. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world’s water surface. But it is the dumping ground for 50% of all marine pollution. Almost 16 countries regularly throw industrial wastes a few miles off shore.

Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

 29. One environmental problem in the world today is ________.

            A. acid rain                                         C. safe water shortage                      

           B. industrial pollution                        D. population explosion

30. Which of the following is NOT the reason that makes water undrinkable?

       A. acid rain                                               C. garbage                                           

       B. industrial pollution                               D. high cost

31. What is a serious problem of Lake Baikal in Russia?

            A. It contains a rich variety of animals and plants.

            B. It is polluted by massive volumes of industrial wastes discharged into it.

            C. It has 1,300 rare species that do not exist anywhere else in the world.

            D. The government did not have the power to enforce laws and regulations.

32. How many countries throw industrial wastes into the Mediterranean Sea regularly?

              A. exactly 16      B. exactly 15          C. nearly 16    D. less than 15