user-avatar
Kangkunn
2 năm trước
Một khu đất hình chữ nhật trong khu đô thị mới có chiều dài 400m, chiều rộng 150m. Người ta chia thành 100 lô đất như nhau để xây nhà. Hỏi: a) Diện tích khu đất đó rộng bao nhiêu héc ta? b) Mỗi lô đất rộng bao nhiêu mét vuông?
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

IV Read the passage and answer the questions.(1.0 point) Visual pollution has a greater effect on people than you may think. I remember when I went to a big city, I was really scared because so much graffiti on the buildings' wall. Then I looked up, and I saw a lot of power lines over my head. Although they were not dangerous, I still felt unsafe since I thought they might fall down. These things prevented me from enjoying the beautiful sights of the city. I also remember the time when I was a student at a university. Once I was so busy with my assignments that I did not tidy my room for two weeks. Looking at the messy room caused me so much stress that I did not want to study. Then I decided to clean the room and put my thing in their proper places. I also bought a small plants and placed it in a corner of the room. These simple actions increased my motivation and helped me to focus on my learning. Questions. 1.How did the author feel when she saw the power lines? …………………………………………………………………………………………………. 2.Why did she have that feeling? …………………………………………………………………………………………………… 3. What was she busy with? …………………………………………………………………………………………………… 4. What happened when she looked the messy room? …………………………………………………………………………………………………… V. Choose the correct answer for each gap to complete the following passage. Rivers are ____(1) ____ of the world’s most important natural resources. Many cities are on large rivers, and____ (2)____ every country has at least one river that ___(3)___ an important part in the lives of its people. Besides transportation, rivers ___(4)___ food, water for crops, water to drink, and opportunities for recreation for people who live along their ____(5)____. And in order to get water for crops, engineers sometimes build a dam (đập, đê) across a river and let the water become a lake ____(6)____ the dam. Then people can use their water not only to ___(7)___ fields but also to make electricity for homes and industries. ____(8)___, the water often becomes polluted when cities on river banks grow ____(9)____ size and the number of industries increases. We are learning that it is necessary to ____(10)_____ rivers clean if we want to enjoy the benefits of the natural resources. 1. A. one B. ones C. among D. those 2. A. most B. mostly C. almost D. about 3. A. takes B. makes C. occupies D. plays 4. A. supply B. provide C. distribute D. bring 5. A. banks B. shores C. sides D. beaches 6. A. behind B. on C. below D. under 7. A. take B. irrigate C. drain D. give 8. A. Moreover B. Therefore C. Thus D. However 9. A. of B. about C. in D. for 10. A. keep B. get C. hold D. maintain

I. Choose the best answer to complete each of the following sentences. 1. There are two main kinds of sports: team sports and ____ sport s. A. individual B. separate C. competitive D. popular 2. Football is the ___ sport in the world. It is considered “the king sport”. A. more popular B. popularer C. most popular D. populares 3. It is ______ to skate there because the lake has just been frozen. A. dangerous B. safe C. popular D. interesting 4. This river is not ______ enough for children to swim in. A. clear B. clean C. polluted D. cold 5. We took part _______ a running race last summer and won the first prize. A. on B. at C. about D. in 6. _________ is one of the most ancient of all sports. A. Horse racing B. Racing horse C. Race horse D. Horse race 7. After school, we _____ basketball or badminton. A. play B. do C. go D, make 8. Hoang looks so cool. He always wears ______ clothes. A. sporty B. sport C. usual D. uniform 9. People usually do ______ with the music. A. karate B. volleyball C. Judo D. aerobics 10. There are over one hundred _______ taking part in this competition. A. person B. student C. competitors D. player

1. David had gone home before we arrived. -> After ……………………………………………………………………………………. 2. The light had gone out before we got out of the office. -> When……………………………………………………………………………………. 4. After my father had watered all the plants in the garden , my mother came home. -> Before …………………………………………………………………………… 5. There was a loud noise next to my door last night, so I couldn’t sleep. -> Because............................................................................................................................ 6. Because it rained heavily, the roads are flooded. (due to) ->................................................................................................................................................. 7. Eating too much sugar can result in health problems. (lead to) -> .............................................................................................................................................. 9. The factory is located near our village. There is air pollution and noise pollution. -> If ………………………………………………………………………………………………….. 10.The local people have to use water from the polluted river.They don’t have fresh water. -> If …………………………………………………………………………………………………. 11.People throw rubbish in the street.The street doesn’t look attractive. -> .If....................................................................................................................................................... 12. Tornadoes can move objects as big as a car. → Objects…………………………………… 13. People have played chess for around two thousand years. -> Chess............................................................................................................................. 14. They took residents of flooded villages to a safe place las tnight -> Residents of flooded villages.........................................................................................................

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team