ai giúp vote 5 sao I. Pronunciation 1). Choose the word which has a different sound in the part underlined. 1.A. thankful B. there C. thermal D. thorough 2. A. growth B. show C. crown D. know 3. A. display B. dirty C. invent D. investigate 2). Choose the word which has a different stress pattern from the others. 4. A. historic B. physical C. aquatic D. botanical II. Choose A, B, C, D for each gap in the following sentences. 1Many fish in my lake have died because of the ………… water A. pollute B. pollution C. polluted D. polluting 2.My teacher always give us a clear ……….. A. explain B. explained C. explanatory D. explanation 3. You can see ………on the Canadian national flag A. the maple leaf B. the red leaf C. the rose D. the oak tree 4.Mary is ……most beautiful of ……three sisters. A. the/the B. a/the C. the/no article D. a/no article 5.Coal, oil and forests are the most important ……..resources A. industrial B. agricultural C. natural D. national 6. Vy had…..stomachache because she ate a big dinner. A. a B. an C. the D. no article 7. Have you taken notice …..the “stop” sign. A. at B. of C. to D. from 8.The Statue of Liberty is a major monument in New York which ……..freedom A. attracts B. symbolises C. decide D. understand III. Give the correct form of the words given to complete the sentences: 1.Are all type of pollution …….to the health of humans and animals HARM. 2. The polluted water results in the …….of many aquatic animals and plants. DIE 3. Both French and English are ……..language in Canada. OFFICE 4………habitats have been destroyed in recent year NATURE IV. Give the correct form of the verb. 1. If we meet at 9:30, we (have)………..plenty of time. 2. If you (find) …………a skeleton in the cellar, don't mention it to anyone. 3. The zookeeper would have punished her with a fine if she ( feed) ……….. the animals.. 4. If we send an invitation, our friends …..(come) to our party. V. Fill in each numbered blank with one suitable word or phrase . Acid rain will not be an easy problem(1)……. As more and more countries become …(2)… there will be more and more competition for petroleum for cars, home heating and industry . While ….(3)….petroleum contribute greatly…(4)….acid rain, it is less polluted than coal. Unfortunately, petroleum is more ..(5)…than coal and no one knows exactly ..(6) … petroleum is left. Therefore, there will be a pressure to burn coal for energy. Coal is a ..(7) ..dirtier energy source than petroleum. Since we already know how …(8).. acid rain is, it is important ..(9)… we increase our efforts to find a ..(10)…. Source of energy as quickly as possible, so that we can avoid further environmental damage. 1. A. solve B. to solve C. solved D. solving 2. A. industry B. industrial C. industrialize D. industrialized 3. A. firing B. shooting C. burning D. cooking 4. A. to B. for C. at D. with 5. A. expensive B. cheap C. clean D. dirty 6. A. how many B. how much C. how far D. how long 7. A. so B. many C. lot D. much 8.A. destroy B. destroyed C. destruction D. destructive 9. A. that B. if C. weather D. which 10. A. polluted B. polluting C. non-polluting D. non- polluted VI. Rewrite the sentence 1. Although he had a good salary, he was unhappy in his job. In spite of ………………………………… 2.He gets up early in the morning and he used to it. He is used to ………………………………… 3.He doesn’t study hard so he will fail the final exam next month. If………………………………………. 4.I will stay at home unless I am invited If……………………………………………………….

Read the following passage about driving laws around the world, and then tick the correct answers: true (T), or false (F). In Sweden, it is necessary to keep your headlights on 24 hours a day. We understand that it is required for places as cold as Sweden during winter, but you cannot turn off your car’s lights even if it is June and the weather looks just fine. If you are driving in Beijing and you come across a zebra crossing, don’t stop or even try to slow down because this will get you in trouble with the law. In Thailand, it is compulsory to wear a shirt while driving. Women who go topless while driving can be fined equal to a few hundred baht. In Cyprus, you should keep both hands on the wheel. Drivers who unnecessarily raise a hand from the steering wheel can get fines, although we think that making some gestures at bad drivers is sometimes good. Don’t yell or curse while you are driving in Rockville, Maryland, USA although you are right. It is illegal to curse in public. You have to pay a fine up to $100 or go to prison up to 10 days. Before you drive off with a car in Denmark, you must check that the children in your car have the best places. Maybe the reason is that they can read books by Hans Anderson. Drinking and driving is illegal in Spain, but in Macedonia, if you are drunk, you cannot sit in the front seats. True False 1. Use your car’s headlights 24 hours a day in Sweden. o o 2. In Sweden, you have to turn on your car’s lights in June when theweather is bad. o o 3. In Beijing, it is against the law to stop at a zebra crossing. 4. In Thailand, you have to wear a shirt while driving. o o 5. There are no rules about what women have to wear while they aredriving in Thailand. o o 6. In Cyprus, you cannot shake your fist (a hand with the fingers and thumb held tightly in) at other drivers. 7. It is illegal to use bad language while you are driving in Rockville, Maryland, USA. o o 8. If you yell or curse while you are driving in Rockville, Maryland, USA and don’t pay the fine, you may be put in prison up to 90 days. 9. Children can have best places while they are riding in a car in Denmark. o o 10. Don’t sit in the front seats if you are drunk in Macedonia, Spain. o o

IV. Write the sentences, using the adjective + to-infinitive structure. EX: It/ difficult/ learn/ Japanese. -> It’s difficult to learn Japanese. 1. We/ delighted/ get/ your letter/ yesterday. 2. It/ not easy/ answer/ these questions. 3. Your writing/ difficult/ read. 4. I/ surprised/ see/ Paul/ the party/ last night 5. It/ impossible/ understand/ his theory. 6. They/ ready/ start/ now. 7. It/ cruel/ tease/ animal 8. you/ pleased/ see/ me/ again?

nguyenthithuan2009 gì đó ơi giúp mình ik. Đề đặt câu hỏi cho câu trên

Dãy chất nào sau đây tác dụng với nước tạo dung dịch làm quỳ tím hóa xanh? A. CO2, P2O5, SO3, N2O5 B. CuO, K2O, CaO, Na2O C. Fe2O3, PbO, CaO, BaO D. K2O, Na2O, BaO, CaO

Bài 1. Cho tam giác ABC vuông tại A. M,N,P lần lượt là trung điểm của AB, AC, BC. a/ Chứng minh rằng : Tứ giác BMNP là hình bình hành b/ Chứng minh rằng : Tứ giác AMPN là hình chữ nhật c/ Vẽ Q đối xứng với P qua N, R đối xứng với P qua M. CMR: R; A; Q thẳng hàng Bài 2: Cho tam giác ABC cân tại A, trung tuyến AM , I là trung điểm AC, K là trung điểm AB, E là trung điểm AM. Gọi N là điểm đối xứng của M qua I a/ Chứng minh tứ giác AKMI là hình thoi. b/ Tứ giác AMCN là hình gì? Vì sao?. c/ Chứng minh E là trung điểm BN d/Tìm điều kiện của ABC để tứ giác AMCN là hình vuông

Tính diện tích phần tô màu đậm trong hình dưới đây:

ai giúp tớ VII. Read the passage and answer these questions below: England is not a large country. No town in England is very far from the sea, and many English families spend their summer holidays at the seaside. There are no high mountains in England, no very long rivers and very large forests. There are many towns in England. No town is very far from another. The English countryside between the towns is like a carpets of many colors. In Spring and summer, the fields, meadows and forests are light green or dark green, and the gardens are green , red, blue, yellow and white with flowers. Questions 1.Is England a large country? ................................................................................................................................................. 2. Where do many English families spend their summer holidays? ................................................................................................................................................. 3. Are there many towns in England? ................................................................................................................................................. 4. What is the English countryside like? ................................................................................................................................................. VIII. Rewrite the sentences below without changing their original meaning. 1. Radioactive pollution is very dangerous. It can cause abnormal growth. [since] 2. We did not go to school. It rained heavily . [because] 3. I don’t have much money now, but I want to buy a new computer. If 4. Light pollution happens. There is a change in animals’ living patterns. If 5. Acid rain is dangerous. Trees’ leaves are damaged. [because of] I. One of the four underlined parts each sentence is not correct in Standard English. If Lucia had been here now, she would find out the truth about her uncle’s accident. .............................. If had I known you were in financial difficulty, I would have helped you. ........................................ If a student takes a course on Computer Science, it will take him four years doing the course. ................. If she had finished the work, she can go home. ........................................ Unless there had been the heavy storm, the climbers will not have died. ........................................ If I had spoken more confident at the interview, they would have offered me the job. .............................. II. Complete each sentences with the correct form of the verb in brackets (3 points) 1. Phuc enjoyed (chat) .................................................... on the phone with her friends. 2. He has decided (go) ........................................................... to work in a school in a quite remote area. 3. We’ll need (call) .....................................him more often. 4. She dislikes (communicate) .....................................through message board or online meetings. 5. I tried (explain) ......................................it to him, but he didn’t understand 7. Which TV programme (you, watch) ........................................ at 9 p.m. tomorrow? 8. They didn’t mind (work) ....................................late to complete the task. 9. He intends (stay) ........................................ there for at least three years. 10. We plan (have) .................................................a picnic this Sunday. Would you like to join us? 11. I’ll need (take) ....................................the bus to Nguyen Du Street. 12. You should avoid (use) ................................... too much shorthand in formal online communication. 13. I hope you (not work) ........................................ when I arrive at 8 p.m. today! III. Change the following sentences from active into passive form. 1. Somebody has taken my briefcase. 2. The teacher returned our written work to us. 3. She had finished her report by soon. 4. The mad dog bit the little boy. 5. The police have arrested five suspects. 6. The doctor ordered him to take a long rest. 7. I am lightening a paper. 8. A group of students have met their friends at the rail way station. 9. They didn’t allow Tom to take these books home. 10. The teacher won’t correct exercises tomorrow. 11. Marry has operated Tom since 10 o’clock. 12.This is the second time they have written a letter to us. 13. Mr. Smith has taught us French for two year. 14. They didn’t look after the children properly. 15. Nobody swept this street last week. 16. People drink a great deal of tea in England.

Một khung dây tròn đặt trong chân không có bán kín R = 12 cm mang dòng điện I = 48 A. Biết khung dây có 15 vòng. Tính độ lớn của véc tơ cảm ứng từ tại tâm vòng dây

Câu 1: Cho đường thẳng : y = (m - 2)x + 2 (d) a, Chứng minh rằng đường thẳng d luôn đi qua một điểm cố định với mọi giá trị của m b, Tìm giá trị của m để khoảng cách từ gốc tọa độ đến đường thẳng d bằng 1 c, Tìm giá trị của m để khoảng cách từ gốc tọa độ đến đường thẳng d là lớn nhất. Câu 2: Cho đường tròn ( O;R) đường kính AB và điểm C thuộc đường tròn ( C khác A và B ) . Vẽ OH vuông góc với dây AC tại H . a, Chứng minh H là trung điểm AC và OH song song với BC b, Tiếp tuyến tại C của đường tròn ( O) cắt tia OH tại D. Chứng minh đường thẳng DA là tiếp tuyến tại A của đường tròn (O) c, Chứng minh DA^2 phần OA^2 = DH phần OH d, Tìm vị trí của điểm C trên đường tròn ( O) sao cho diện tích tam giác ADC bằng 1,5 lần diện tích tam giác ABC. Câu 3: Cho hàm số y = -x phần 2 có đồ thị là ( d1) và hàm số y = 2x + 3 có đồ thị là ( d2) a, Vẽ ( d1) và (d2) trên cùng một mặt phẳng tọa độ b, Xác định các hệ số a, b biết đường thẳng ( d3) : y = ax + b song song với (d1) và cắt (d2) tại một điểm trên trục tung. Câu 4: Cho đường tròn ( O; R) đường kính AB. Lấy điểm H nằm giữa nằm giữa hai điểm A và O. Vẽ dây CD vuông góc với AB tại H. a) Chứng minh H là trung điểm của CD và tính góc ACB b) Gọi E là điểm đối xứng với A qua H. Chứng minh tứ giác ACED là hình thoi, suy ra DE vuông góc với BC tại F c) Chứng minh HF là tiếp tuyến của đường tròn (I) đường kính EB d) Tìm vị trí của điểm H trên đoạn AO sao cho tam giác BCD đều và tính diện tích tam giác BCD theo R.