hỗn hợp Y có khối lượng 47,6 gam gồm 2 anken kế tiếp nhau trong dãy đồng đẳng tác dụng vửa đủ với 300ml dung dich Brom 0,2M a) xác định CTPT b) Tính phần trăm về khối lượng của anken trong hỗn hợp Y.

Vẽ anime full line, màu... Bán thân với giá 5ng/1câu Nhóm nào chứa đc k te

Cho xin ý kiến đi, mik muốn vẽ sát thủ mà khó quá ;-; Vẽ anime sát thủ nha, nữ hay nam đều đc Full line, full màu

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Em đinh mua một bộ màu nhưng không biết mua loại màu nướ nào. Các anh chị tư vấn hộ em với, cái loại dễ mua, dễ tô và nhiều màu

Mình rất cần giải hộ mình với ạ Thanks trước ạ

I. Put the underlined letters in order to complete the sentences. Some answers have two words. 1. Children don't usually play cei yeckho because it's very dangerous. 2. Teenagers in our town go ksgnebrtaaoid every Saturday. 3. Girls often like nysticsgam, and lots of boys do too. 4. The sport of tcikcer is more popular with men than with women. 5. In England, and some other countries, tkrciec is a popular ball game. 6. Some people say icamearn football is a bit like rugby. 7. I like drastakeboing and basketball. What do you like? 8. My mum doesn't let me play divoe mages every day. 9. I'm wearing a hat, scarf and gloves today because we are gnsowordbnai. 10. My brothers and I only play odvie smage when we finish our homework.

V.Rewrite the following sentences into conditional ones beginning with the given words: 1. As he is often absent from class, he can’t keep pace with her classmates. (If he íf 2. Be careful, or you make a wrong decision. (If you …..) 3. Today is very cold, so we couldn’t go swimming. (If today ….) 4. I give back the book because I don’t bring enough money . (If I ……….) 5. Don’t make noise or you’ll wake up the baby. (If you ……) 6. Stop talking or you won’t understand the lesson. (If you……) 7. If you don’t invite her, I’m sure she won’t come. (Unless you .) 8. Work harder if you don’t want to lose your job. (Unless……) 9. If you don’t go away, I will phone the police. (Unless …….) 10. My father isn’t here, therefore he can’t give us some advice. [If my father ……] VI Read the passage and choose the correct answer A, B, C or D. Environmental pollution is a term that (1)______ to all the ways by which man pollutes his surroundings. Man dirties the air with (2)______ gases and smoke, (3)_____ the water with chemicals and other substances, and damages the (4)_____ with too many fertilizers and pesticides. Man also pollutes his surroundings (5)_____ various other ways. For example, people ruin natural beauty by (6)_____ junk and litter on the land and in the water. Environmental pollution is one of the most serious problems facing mankind today. Air, water and soil are necessary to the (7)_____ of all living things. Badly polluted air can cause illness, and (8)_____ death. Polluted water kills fish and other (9)_____ life. Pollution of soil reduces the amount of land that is available for growing food. Environmental pollution also brings ugliness to man’s (10)_____ beautiful world. 1. A. means B. refers C. provides D. reduces 2. A. thick B. natural C. exhaust D. influent 3. A. purifies B. pumps C. sprays D. poisons 4. A. soil B. forests C. streets D. beaches 5. A. on B. in C. by D. with 6. A. spoiling B. leaving C. scattering D. gathering 7. A. survival B. environment C. development D. growth 8. A. so B. ever C. too D. even 9. A. animal B. marine C. human D. plant 10. A. nature B. natural C. naturally D. natured

Một quầy bán thực phẩm có 3650 kg cá , buổi sáng bán đc 1800 kg cá , buổi chiều bán đc 1150 kg cá . Hỏi quầy đó còn bao nhiêu kg cá ? ( giải bằng hai cách ) m.n giúp nhanh vs , em tui đg cần :33

Cho tam giác nhọn abc có ad là phân giác trong góc A ( d thuộc bc) . Đường thẳng qua d song song với ab cắt ac tại i , đường thẳng qua d song song ac cắt ab tại k . Chứng minh rằng tam giác idk là tam giác cân