(1+tan^2x) (1+sinx)=cos 2x/1-sin 2x

IV. Read the passage and answer the questions. It was the first lesson after the summer holidays at a small school in England. The lesson was about the seasons of the year. “There are four seasons in the year,” said the teacher, “They are spring, summer, autumn, and winter. In spring, it is warm and every thing begins to grow. In summer ,It is hot and there are many flowers in the fields and gardens. In autumn, there are many vegetables and much fruit. Everybody likes to eat fruit. In winter, It is cold and it often rains. Sometimes there is snow on the ground.” Here the teacher stopped and looked at one of the pupils “stop talking, Tom,”he said. “Now listen to me. Can you tell us when is the best time of apples?” “Yes, sir,” answered Tom. “It is when the farmer is not at home and there is no dog in the garden.” 1. Where did the lesson take place? ………………………………………………………………………… 2. What was the lesson about? ………………………………………………………………………… 3. What did the teacher ask Tom to do? ………………………………………………………………………… 4. What did the teacher asked the class to do? ………………………………………………………………………… 5. Did the teacher say “Stop talking, Tom,”? ………………………………………………………………………… V. Write the correct form of the words given in capital letters to complete the following sentences. 1. Their children have quite ………………characters. DIFFERENCE 2. My brother bought a new…………..rod yesterday. FISH 3. Mr. Jane runs his business very ………….. SUCCESS 4. I like the city life because there are many kinds of ………. ENTERTAIN 5. The scouts do the……………..work. VOLUNTEER 6. Is there anything……………… on TV tonight? INTEREST 7. What is the correct……………..of this word? PRONOUNCE 8. My uncle often spends his free time doing volunteer work at a local............. ORPHAN 9. Relax for some minutes and you’ll feel more………….. COMFORT 10. In electronics, we learn to repair ...................appliances. HOUSE VI. There is one mistake in each of the following sentences. Find out and correct it. 1. He has waited there for a quarter past six. (1)…………….. 2. Surface mail is many cheaper than air mail. (2)…………….. 3. They do their best to keeping the family happy. (3)……………. 4. The armchair is in the living room, among the television and sofa. (4)……………. 5. Tourists usually have a bus to the countryside. (5)…………… VII. Fill in the blank with one suitable word. Charlie Chaplin was born in a very poor part of London. (1) ………………father was a comedian and his mother worked (2) ………………a dancer and a singer. Neither of them (3) ………………successful so the family (4) ……………… very little money. The first time he himself earned (5) ……………… by dancing and singing, he was only five years old. He did many kinds of jobs, but what he loved best was working (6) ………………the theatre. When he (7) ……………… about fifteen, he joined a traveling theatre company and went on trips to America. On one such tour, (8) ……………… was offered a part in a film, so he went to Hollywood, where he eventually became both a famous actor (9) ……………… film director. He died in Switzerland in 1977, at the (10) ……………… of 88. There is now a statue of him in Leicester Square, London, the city of his birth and early up-bringing. VIII. Fill in each blank with one suitable preposition. 1. It’s 2.5 km…………my school………..the movie theatre. 2. I live ………..Xuan Dieu street……….my grandparents 3. She is talking…………her students in the school yard. 4. My new house is different……….my old house. 5. My father is a farmer. He works………..a farm. 6. Does your aunt work ……….the central hospital? – Yes, she is a nurse there. 7. I’m always busy. I must work ………..early morning until night. 8. Mr. Minh is a journalist. He writes ………..Tuoi Tre newspaper. 9. This apartment is suitable………….my family. 10. I often help my parents ………….the housework after school.

She was born and spent her childhood in gia nghia town (use grew)

Part VII- Complete the second sentence so that it has a similar meaning to the first sentence. 1. It is over two years since they left their homeland. (They haven’t …………………………) 2. “How many cars are there in front of your house, Mai?” I said (I asked …………………...) 3. No one introduced me to newcomers in the festival. (I ……………………………………..) 4. The food was too bad for the children to eat. (The food was so ……………………………) 5. It’s no use persuading her to join in that activity. (There is no ……………………………..) 6. I am on the fifth page of the essay I am typing. (So far ……………………………………) 7. The dog keeps stealing my socks. (The dog is ……………………………………………...) 8. Hoa found it easy to translate this poem into French. (Hoa had no ………………………..) 9. Collect all of dirty clothes by 8 o’clock tomorrow morning. (Let all ………………………) 10. Mary is the most graceful girl at school. (No girl …………………………………………..) Part VIII- Write a letter about 150 – 200 words to a pen friend about your neighborhood. I. Choose one of word whose underlined part is pronounced differently from the others. 1. A. christmas B. character C. school D. church 2. A. traveled B. surprised C. worked D. climbed 3. A. tour B. pour C. your D. course 4. A. towel B. down C. window D. flower 5. A. cook B. food C. too D. pool II. Choose the best answer to complete the following sentences. 1. His handwriting is terrible. It’s not easy at all ….........what he writes. A. to see B. to read C. reading D. seeing 2. The city is ……………….on the shore of Lake Michigan. A. visited B. lied C. laying D.located 3. Kim Tan town is……………….. busier. A. becoming B. doing C. making D. having 4. The Smiths never go out in the evening, ……………….? A. do they B. don’t they C. doesn’t he D. does he 5. Ba is strong enough…………….. his father with the work on the farm. A. helping B. help C. helps D. to help 6. Last week my child …………… to the biggest zoo in town by my wife. A. took B. were taken C. went D. has gone 7. I tried my. ……………not to laugh, but I couldn’t. A. good B. well C. best D. better 8. Are you proud…………….your country and its tradition ? A. about B. on C. of D. for 9. I want to ask my parents ................... some money. A. from B. for C. with D. about 10. You are very different ........................ your brother. A. to B. for C. with D. from 11. I am better ........................ English than Nam. A.than B. with C. at D. for 12. He seldom goes fishing, ...................? A. doesn't he B. is he C. does he D. isn't he 13. Heavy rains …….the plane for several hours A. stopped B. prevented C. delayed D. kept 14. You must go to school ……the ages of 5 and 16. it is compulsory. A. from B. over C. during D. between 15. Sorry to keep you………… A. wait B. waiting C. to wait D. waited III. Give the correct form of the verbs in brackets . 1. I‘ve decided (stop) ……………...smoking. 2. I (visit) .........................singapore two years ago. 3. Look at those black clouds. It (rain). 4.We are tired of (work)…………… for low salary. 5. This is the second time you (break)……a cup. 6. (you/do) …………… the homework yet? 7. Mai is in her room. She (play) the guitar. 8. The teacher said that we should ( not make ) …………… noise in class. 9. Water …………( cover) most of the Earth’s surface. 10. The gate ……………...( lock) at 6.30 p.m everyday.

Giải cho thật chính xác nha: Give the correct form of the following words

Hai người cùng xuất phát tại hai địa điểm A và B vào lúc 6h, AB cách nhau 60km. Người thứ nhất đi xe máy từ A đến B với vận tốc vị 500m/phút, người thứ hai đi xe đạp từ B ngược về A với vận tốc v2=2s/9 m/s. a .Hỏi sau bao lâu hai xe cách nhau 20km. c. Nếu xe thứ nhất khởi hành từ lúc 6h, xe thứ hai khởi hành từ lúc 7h thì hai xe gặp nhau lúc mấy giờ? Điểm gặp nhau cách A bao xa? giúp mình câu 1 b,1c với

PART III - Put the correct form of the words: 1. Joanne wants to become a __________ in the future. (science) 2. Many rural areas in Viet Nam have been __________ in the last few years. (urban) 3. The book was so ________ that we didn’t want to read it. (interest) 4. There are a lot of _______________ in the competition. (contest) 5. Linda’s __________ made the party less exciting. (absent) 6. He didn’t win the championship, so he felt very _____________ . (hope) 7. Because of his _________, they failed the exam. (lazy) 8. Vinamilk company has served customers a lot of _____________ recently. (produce) 9. Tet holiday is one of the most important __________ for Vietnamese people. (celebrate) 10. Laura loves all of Vietnamese dishes, _______________ Nem. (special) PART IV - Find and correct a mistake in each sentence: 1. The boy was enough intelligent to solve that problem. 2. The girl helped me with the needlework yesterday is my classmate. 3. They asked their friends not play soccer in the road. 4. Hanh is the same weigh as my sister. 5. It is careless for you to leave your book on the train. 6. My brother used to going to the movies with our father. 7. Hoa asked me if I could have a picnic with her in the country or not. 8. Most of monkeys both in the forest and in the zoo are interesting in bananas. 9. It takes Nam thirty minutes going to school on foot everyday. 10. Not only Ha but also her friends was present in my fifteenth birthday party. Part V- Choose the most suitable answer A, B, C, or D to complete the following passage. Air pollution is caused ________(1) ill health in human beings. In a lot of countries, there are ________(2) limiting the amount of smoke factories can produce although there is not enough _______(3) on the effects of smoke on the atmosphere. Doctors have ________(4) that air pollution causes ________ (5) diseases. The gases from the exhausts of cars _______(6) also increased air pollution in most cities. The ________ (7) of petrol produces a poisonous gas, which is often collected in busy streets circled by high buildings. Children _______(8) in areas where there is a lot of lead in the atmosphere can not think as ________(9) as other children, and are clumsy when they _______(10) their hands. 1. A. from B. on C. over D. of 2. A. laws B. ideas C. problems D. regulations 3. A. news B. article C. information D. newspaper 4. A. agreed B. pointed C. disagreed D. proved 5. A. lung B. heart C. liver D. stomach 6. A. had B. have C. has D. having 7. A. water B. lead C. gas D. exhaust 8. A. lived B. live C. to live D. living 9. A. quick B. slowly C. quickly D. slow 10. A. touch B. use C. handle D. collect PART VI - Read and fill a suitable word in each blanket: Christmas is always held ________(1) December the twenty fifth every year. Every family in England decorates a Christmas tree and puts ________(2) in the middle of the living room. And Santa Claus plays an important _________(3) in this festival. There is a poem to relate him. In 1823, the patron saint of children, Saint Nicholas appeared in a poem ________(4) A Visit Saint Nicholas. The character in the poem _______(5) a fat jolly man who wore a _______ (6) suit and gave children ________ (7) on Christmas Eve. The poem, which was ________(8) by Clement Clarke Moore, an American professor, became popular __________(9) the USA. Santa Claus is based _______(10) the description of Saint Nicholas in this poem. IX. Rewrite the following sentences so that the meanings stay the same. 1. She eats more chocolate than I. I ……………………………………………………………. 2. Vinh keeps forgetting his homework. Vinh is ……………………………………………………………. 3. Keeping the environment clean is very important. It’s…………………………………………………………………. 4. No one helped Lan to do the homework. Lan ……………………………………………………………… 5. It’s three years since I last spoke to her. I haven’t…………………………………………………………… 6. Tam doesn’t type as fast as she used to. Tam used …………………………………………………………. 7. How long is it since you used the car? When …………………………………………………………….. 8. We started living here 15 years ago. We have…………………………………………………………... 9. Let’s meet inside the centre ,at the cafe corner? How………………………………………………………………. 10. Nam is very strong, he can do heavy work. Nam is strong ………………………………………………………………..

PART I - Choose the word A, B, C or D whose underlined part is pronounced differently from the others. 1. A. rubbish B. uniform C. umbrella D. thumb 2. A. appear B. weather C. bread D. headache 3. A. project B. belong C. woman D. concert 4. A. think B. though C. mother D. these 5. A. eraser B. baseball C. suitcase D. waterfall Choose the word A, B, C or D whose main stress is different from the others in the group. 6. A. pencil B. raincoat C. arrive D. notebook 7. A. enjoyable B. power C. permission D. explore 8. A. photography B. minority C. heroic D. visit 9. A. translation B. difficult C. unluckily D. agree 10. A. Vietnamese B. engineer C. celebration D. product PART II- Choose the best answers to completes each sentence. 1. Hoa __________________ coins and stamps since she was six. A. was collecting B. has collected C. collected D. will collect 2. His brother is a _________________ boy. He always tells a joke. A. handsome B. humorous C. sociable D. energetic 3. Do you mind if I __________________ your car to work? A. drive B. driving C. to drive D. drove 4. They are ____________ that their son won the championship. A. delighted B. pleasing C. sad D. interesting 5. My sister regretting ___________ Mai’s glasses yesterday. A. to break B. broken C. breaking D. break 6. Hoa dances more _______________ than her classmates. A. beauty B. beautiful C. beautifully D. beautify 7. They will hold a meeting in the large room ____________ the morning of next Sunday. A. in B. on C. at D. of 8. Minh loves playing chess _____________ his sister enjoys skipping in their free time. A. when B. because C. while D. during 9. One hundred dollars ______________ an big amount of money for her. A. is B. are C. were D. is being 10. Don’t overheat the victim _____________ blankets or coats. A. on B. for C. with D. from 11. We are going to __________ a small plane to Ha Long Bay this weekend. A. drive B. ride C. take D. give 12. They as well as Mai ___________________ in the field at this time last Sunday. A. was working B. were working C. has worked D. have worked 13. Thanks _______ Alexander Graham Bell’s invention, I can communicate with each other easily. A. for B. from C. on D.to 14. We must _________ the environment from the pollution every day. A. save B. protest C. protect D. waste 15. In our opinion, there are a lot of differences _________ two twins. A. from B. without C. with D. between 16. If you _______________ your work, let’s play volleyball with them in the garden. A. finish B. are finishing C. have finished D. will finish 17. Have a picnic with ______________ in the mountain tomorrow. A. Hanh and I B. Hanh and me C. I and Hanh D. me and Hanh 18. Study is no _____________ restricted to just one location. A. longer B. long C. longest D. the longest 19. My son was hit _______________ a stick while he was working in the field. A. by B. with C. without D. out 20. Nam and Manh have played badminton for two hours, but __________ of them are tired. A. none B. both C. neither D. all

Trên mạch thứ nhất của một gen ở một sinh vật nhân sơ có tỉ lệ A1+T1/G1+X1=1/4. Hãy xác định: a. Tỉ lệ G2+X2/A2+T2 trên mạch thứ hai của gen. b. Nếu mạch thứ nhất của gen là mạch khuôn được sử dụng để tổng hợp phân tử mARN thì phân tử này có tỉ lệ A+U/tổng số nu của nó là bao nhiêu?

Làm hộ nha 5 giờ đi hok rồi Có 1 câu thôi