Bánh trước của một máy kéo có chu vi là 3,5m, bánh sau có chu vi là 4m. Khi máy kéo từ A đến B, bánh trước quay nhiều hơn bánh sau 30 vòng. Tính khoảng cách AB. ai giúp e với

các bạn giúp mk bài này 2. Give the correct form of the verb in the brackets. 1. When I (travel) …………. the Disney Land, I (see) …………. a lot of characters in fairytales. 2. She (watch) …………. TV while her mother (cook) …………. dinner for the family. 3. At this time yesterday, I (read) …………. a cooking book about Korean dishes. 4. Children often (go) …………. to sleep at 9 p.m. in the west. 5. The sun (rise) …………. in the east and (set) …………. in the west. 6. Hurry up! The bus (come) …………. 7. I (leave) …………. the house this morning to go to the supermarket. 8. Kathy (cut) …………. his hand when he (play) …………. with a sharp knife last night. 9. Snow White (bite) …………. into a poisoned apple out of the pond. 10. While she (sit) …………. by a pond crying, a frog (jump) …………. out of the pond.

CÓ BẠN NÀO GIÚP MIK ĐC KO Ạ ??????????????????????????????????????????????????????? 1. Which word has different STRESS? 1 điểm A.rediential B.environment C.cartography D.ecology 2. Which word has different STRESS? A.alternatively B.criminology C.unsuccessfully D.physiography 3. Which word has different STRESS? A.emergency B.geography C.temporary D.geology 4. Which word has different STRESS? A.demography B.astrology C.medication D.unnatural 5. Which word has different STRESS? A.nationalize B.television C.apology D.voluntary 6. Which word has different STRESS? A.yesterday B.evening C.geography D.attitude 7. Which word has different STRESS? A.awful B.guidance C.ecology D.safety 8. Which word has different STRESS? A.painting B.license C.photography D.member 9. Which word has different STRESS? A.passion B.color C.pattern D.psychology 10. Which word has different STRESS? A.exercise B.exporting C.example D.exactly

Câu 7: Tích vào ô trống những ý kiến đúng về xã hội Đại Việt thời Lê sơ. * A.Số lượng nô tì thời Lê sơ ít hơn so với thời Lý - Trần. B.Thương nhân, thợ thủ công là những lực lượng không được XHPK xem trọng. C.Nông dân và tá điền là hai tầng lớp khác nhau. D.Tá điền là lực lượng đóng thuế cao nhất trong xã hội.

Giải dùm mình bài 3 với ạ mình đanh cần gấp

Các bạn giúp mình với ạ ! Cảm ơn các bạn nhiều!! Khoanh vào đáp án đúng ( modal verbs) 1 she spoke in a low voice, but I....... What she was saying A.can understand. B. Could understand. C. Were dbleunderstand D. Could have under stood. 2 . Robert arrived without his books. He......it. A. Could has lost B. Would have lost c. Should have lost D. Will have lost. 3.Where đó you think roony is to day ?. " I have no idea he........ late". A. should have left b. would sleep c. would have sleep d. may have sleep 4 .The photos are black. The X-ray at the airport ______ them a. should have damage b. would have damagec. would damage d. must have damage 5. The children _________ “thank you” to you when you gave them their gifts a. will have said b. should have saidc. must say d. should say 6. Jean did very badly on the exam. She _________ harder. a. must have studied b. could have studiedc. sholud have studied d. must studied 7. These two boys are identical. They _________ twins. a. must have been b. should be c. must be d. should have been 8. Had we known your new address, we _________ to see you. a. came b. will come c. would have come d. would come

Write about the city of Seoul: -How is the city? -How are the people? -How's the food? -How is the weather?

Nêu các dạng của thể dị bội và cho ví dụ đối với mỗi trường hợp

Chất hữu cơ A và B có CTPT lần lượt là C6H6 và C7H8. A,B đều tác dụng được với lượng dư AgNO3/d.d NH3 tạo thành các chất kết tủa tương ứng là D và E (có phân tử khối đều lớn hơn chất hữu cơ ban đầu là 214). Viết CTCT có thể có của A và B.

Mong mng giúp đỡ ạ! Is the weather changing? Have you noticed that nowadays the weather isn’t what it used to be? Do you have memories of cold winters, rainy springs and autumns and warm summers? Why isn’t it like that anymore? What has happened? I spoke to Maria from Athens and Russell from London and they told me about their experiences. Maria told me that over the previous year she had noticed rather strange weather in her country. She said a Mediterrranean climate is normally cool or cold in the winter and warm in the summer, but last year things were different. To begin with, the autumn had seemed quite normal, pleasant, mild weather, temperatures in the 20s and quite dry, but the problem was that the autumn never seemed to end. It went on and on and the temperature became almost tropical. Every morning there was mist, but not much rain fell. By December, there was no sign of morning frost or the usual occasional thunderstorm. In fact, temperatures remained high for that time of year. Throughout the months of the winter, no snow fell – in fact, there was not a snowflake to be seen. There were a couple of weeks of quite cold weather around Christmas, and that was it. Spring came early because temperatures were so high. Then suddenly in May, a time of year in Greece which is usually early summer, it started to pour with rain and it didn’t stop. It was the wettest May anybody remembered. Finally, there was an unforgettable summer of non-stop heat-waves, followed by catastrophic forest fires spread by extremely high winds. It was the hottest summer in Greece for a long time. Russell agreed with Maria that the weather had been strange. Although the autumn and winter had been quite cold in Britain compared to Greece, there had been very little rain. They didn’t have a cold period with some thick snow, but it was basically a mild winter for Britain. In fact, it was so mild that animals and plants were confused about what time of year it was. As a result, flowers blossomed early and baby animals were born early. However, after a dry winter, the strangest weather was still to come to Britain. The summer arrived but instead of mild days, Britain experienced terrible rains which flooded the country. In many towns the roads turned into rivers as the rain poured down for days and days. In the end, the rain lightened but it was certainly a rainy summer. There is a lot of talk about why the weather seems to have gone crazy, but the general agreement among experts is that it is our fault. We are destroying our environment in many different ways, and the pollution we are producing is causing what is called ‘The Greenhouse Effect’. This phenomenon is causing climate change and affecting the weather by making the world warmer. I think now it’s up to us to find a solution to this problem. 1- In the first paragraph, the writer says the weather nowadays ___________. A. has changed C. is never cold B. is rainy in spring D. is warm in autumn 2- How did Maria say the weather in Greece had changed? A. It had been cool in the summer. C. It had been rainy in the autumn. B. All the seasons had been strange. D. There had been no spring. 3- What was different about the Greek summer? A. It was milder than usual. C. It was rather wet. B. It was always windy. D. It was hotter than usual. 4- Russell said the British winter was__________. A. not as cold as in Greece C. like spring B. wetter than usual D. colder than usual 5- Why was the British summer unusual? A. The rivers were drier. C. There was more rain. B. The days were milder. D. There was more pollution.