Có những chất: Na2O, Na, NaOH, Na2SO4, Na2CO3, NaCl. a) Dựa vào mối quan hệ giữa các chất, hãy sắp xếp các chất trên thành một dãy chuyển đổi hóa học. b) Viết các phương trình hóa học cho dãy chuyển đổi hóa học ở câu a.

I. Find the odd one out A, B, C, or D. 1. A. affect B. replace C. effect D. fly 2. A. density B. overcrowded C. crime D. megacity 3. A. explosion B. hunger C. slum D. float 4. A. space B. safely C. poverty D. slum dog 5. A. criminal B. drive C. doctor D. student II. Complete the following tag questions. 1. It is a new cartoon, ……………………………….? 2. They don’t want to sell their house, …………………………? 3. This machine never works very well,…………………………? 4. Your parents should stay in the hotel,…………………………? 5. We can’t go camping today,………………………..? 6. She is late,……………………….? 7. Let’s go to Lan’s house,………………………..? 9. You grandparents don’t prefer living in the city,………………………….? 10. The tourists will never be allowed to visit the slums again,………………………?

hãy vẽ góc kề bù xoy và yoz,xoy =60 độ

tìm x nguyễn để phân số là số nguyên : ( mình đang cần gấp ạ)

Mọi người giúp mình tiếng anh với ạ mình cảm ơn

III. Read the following passage and answer the questions below. The two children have been in London. They were surprised at the crowds everywhere. They decided to travel on the tube railway. They found that they had to be quick and get on the train or it would go off without them. One day they went to Hype Park and walked along on the grass to Kensington Gardens in bright autumn sunshine. This was different from the crowded streets, and Mary said that it was like being back home. The leaves of the great trees were turning red, brown and yellow, birds were flying about, there were lots of flowers and ducks swimming about on the Round Pond. Only the noise from the street in the distance reminded them of the town. 1. Where have the children been? ……………………………………………………………….. 2. What made them surprised? ……………………………………………………………….. 3. What did they decide to do? ……………………………………………………………….. 4. Where did they go one day? ……………………………………………………………….. 5. In which season did they go there? ……………………………………………………………….. IV. Choose the best option A, B, C or D to complete the sentence. 1. Overpopulation problems………………both the rich and the poor. A. cause B. reduce C. happen D. affect 2. The major cause of death for children living in the slums is……………. A. immigration B. malnutrition C. density D. illiteracy 5. The city has to find…………………….to homeless people immediately. A. calories B. solutions C. earnings D. systems 6. The immigrants will hardly find accommodation in the city,………………..? A. will they B. won’t they C. will it D. won’t it 7. Disease spreads more quickly in overcrowded areas,……………….? A. isn’t it B. doesn’t it C. is it D. does it 8. Living in the country is healthier than that in the city because in the countryside, there is…..…traffic. A. higher B. fewer C. more D. less 9. people move to the city with the hope that they can get…………..food and better healthcare. A. more B. bigger C. less D. fewer 10. ………………accidents were recorded this year than that year; 23 cases compared to 42 cases. A. Less B. More C. Fewer D. Lower V. Make the questions for the underlined parts in the following sentences 1. Most of my classmates go to school by bike ……………………………………………………………… 2. It is about three kilometres from my house to school .……………………………………………………………… 3. The students are playing football in the school yard .………………………………………………………………

cho em hỏi người là vật thể đúng không ạ

Giải bài 3 và 4 hộ!! Ai làm đúng tcho 5 sao!

làm hộ mk vs ạ chia ở thì hiện tại tiếp diễn

vẽ kumoko dạng nhện ở trạng thái arachne 50 điểm đó xấu = gì thì biết rồi