giải giùm mình đi làm ơn Bài 1: Cặp chất nào sau đây xảy ra phản ứng hóa học: a. Flo và hiđro b. Clo và oxi c. Lưu huỳnh và hiđro d. Đồng và clo e. Cacbon oxit và nước g. Magie và lưu huỳnh Bài 2: Hãy chọn các hóa chất sau: HCl, CO2, CO, Cl2, H2O điền vào chỗ trống thích hợp và hoàn thành phương trình phản ứng sau: a. MnO2 + ….. MnCl2 + ….. + H2O b. Mg + ….. MgO + C c. Fe3O4 + ….. Fe + ….. d. CaCO3 + ….. CaCl2 + ….. + H2O e. NaOH + …… NaCl + ….. + H2O g. NaOH + …... NaCl + NaClO + …..
cho hình chóp S.ABCD có đáy ABCD là hình thang đáy lớn là AD và AD=2BC, AC giao với BD tại o. Gọi M là trung điểm với SD, G là trọng tâm tam giác SCD. a. xác định giao tuyến của mặt phẳng (BOG) và mặt phẳng (SBC) b. chứng minh OG song song với mặt phẳng (SBC) c. Xác định thiết diện của hình chóp với mặt phẳng |(BCG). thiết diện hình là gì? Mình cảm ơn ạ :3
what time is it là gì ? dịch nghĩa nha
F. CORRECTION I. Choose the underlined word or phrase (A, B, C or D) that needs correcting. 1. If a drop of oil is placed in a glass of water, it would float to the top. A B C D 2. The Tuoi Tre is a daily newspaper that is wide read by both teenagers and adults. A B C D 3. My parents wouldn’t let me staying up late when I was a child. A B C D 4. Her children are used to picking up after school every day. They don’t have to walk home. A B C D 5. I’m usually right about the weather, amn’t I? A B C D 6. Could I change seats with you? I’d like sitting next to my friends. A B C D 7. Watch television to the exclusion of all other activities is not a healthy habit for a growing child. A B C D 8. Hans is only fourteen, but he seems enough old to stay out until ten. A B C D 9. I think that’s an interesting thought, isn’t that? A B C D 10. Greeting enough sleep is important in order not fall asleep is class. A B C D 1. The bad weather didn’t make my flight be delayed, but the terrorism does. A B C D 12. Kevin had took home lots of nice souvenirs last time, so he didn’t buy anymore. A B C D 13. A tour guide was showing the tourists around when a something fell down from the sky. A B C D 14. If you decide to start the trip, you must reserve a seat in advance on planes or trains. A B C D 15. I bet you will never have the nerve to start an expedition to an Amazon rainforest. A B C D 16. My trip to the countryside was fantastic. The locals were extremely welcome. A B C D 17. Did you have a chance to do any sightsee? A B C D 18. I find it absolutely astonished that you didn’t like Paris. A B C D 19. You’re a third person to ask me about the trip. A B C D 20. When he was ten, he taught himself to play a violin. A B C D
Cuộc kháng chiến chống quân Lương xâm lược đã diễn ra như thế nào? Vì sao Triệu Quang Phục lại đánh bại được quân Lương, giành lại độc lập cho đất nước
giới thiệu một cuốn sách ko quá 200 từ Dế Mèn Phiêu Lưu Kí
Ex 1. Put the verbs in brackets into the correct form of conditional sentence type 1. 1. If people (pollute) the environment, a lot of animals (die) . 2.If water (consist) germs, people (get) ill. 3 . If the poles (melt) , huge landmasses (be) under water. 4. Many precious animals (disappear) , if people (cut down) trees. 5. If nuclear waste (throw) away, it (be) very dangerous. 6. If the emission of CO2 (continue) at high rate, the climate (destroy) . 7. We (save) the trees If we (save) paper. 8. If schools (teach) about environmental problems, All students (know) how to protect the environment. 9. If more people (travel) by bike or bus, we (not have) traffic jam. 10. If the government (fine) heavily to the factories, they (not dump) sewage into the ocean. Ex 2. Put the verbs in brackets into the correct form of conditional sentence type 2. 1. If I (be) the president, I (pass) harder regulations for using fertilizers in agriculture. 2. If I (be) you, I (not eat) that genetically modified potatoes. 3. If big corporations (care) more about the environment and less about their own pockets, the pollution from factories (not increase) so fast. 4. He (sort) his trash, if he (be) smart. 5. If the seas (pollute) , maybe the population of whales (recover) . 6. If I (not throw) this can of Coke into the bushes, I (not know) that Coke is poison for wild animals. 7. If the factories (not dump) untreated waste into the ocean, fish (die) massively. 8. What (do) you if you (be) President. 9. If the air (not be) dirty, the breathing problems (reduce) . 10. If I (own) a lonely island, I (build) a huge house by the beach.
Ai giải giúp mình với ạ VIẾT LẠI CÂU DÙNG TỪ CHO SẴN (VIẾT TỪ CHỮ ĐẦU TIÊN CHO SẴN SAU MŨI TÊN) 1.This car can run very fast. I bought it last year 2.Can you tell me your hometown ? You were born and grew up there. ---> Can you _______ 3.The woman was very miserable. Her husband had gone out with some friends
giúp mình nha, trả lời đúng cho ngay 5 sao.
Ai giải được câu 3,4,5mình cho 5sao Giải 1 câu cũng được Giải rúp mình với
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