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chuthu.bvdkhb
2 năm trước
dùng CO để khử hỗn hợp A gồm a mol FeO và b mol Fe2O3 thu được hỗn hợp chất rắn B gồm x mol Fe2O3 y mol Fe3O z mol FeO t mol Fe.tìm biểu thức liên hệ của a,b,x,y,z,t.
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I. Choose the correct word to complete each sentence. 1. English isn’t actually the official/ government language in Britain. 2. Some research into second language learning suggest that oral fluency/ accuracy may increase with moderate amounts of alcohol. 3. In learning a second/ two language, some people are very strict and want a rule for everything. 4. The old woman couldn’t speak English, so her grandchildren had to interpret/ translate for her. 5. Many words in English are borrowed/ lent from French. II. Put the verb in brackets into the correct tense. 6. My English ___(improve) if I lived in UK for six months. 7. If I spoke perfect English, I ___(have) a good job. 8. If I ___(have) 6.0 in IELTS, I would get the scholarship to study in America. 9. She ___(travel) all over the world if she could speak English or Chinese. 10. Amy can only speak one language, but if she could speak two languages, she ___(apply) for a job at the Multicultural Center. III. Rearrange the words to make up meaningful sentences. 11. of foreign always Beginners language meet first difficulties at. ................................................................................................................................................ 12. I had started to overcome problems English when I these learning. ................................................................................................................................................ 13. The different in letter English puzzles a lot pronunciation because the same has me sounds. ................................................................................................................................................ 14. In to have listen an accent just repeat like the speakers, I often to tapes order and native after them. ................................................................................................................................................ 15. It English me a how long took tenses time to learn to master the in grammar. ................................................................................................................................................

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