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Tivimaio
2 năm trước
Dẫn khí H2 qua ống đựng 20g bột sắt (III) oxit nung nóng, sau phản ứng kết thúc thu được chất rắn X trong đó có 5,6g bột sắt a) Oxit sắt bị khử hết mấy % b) Mấy lít H2(đkt) bị khử và mấy g X
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Chọn câu trả lời đúng nhất: 1. Choose the best relative pronoun to fill in the blank: “The top students, …………… graduated with honors, received scholarships.” A.which B.all of whom C.all of which D.some of which 2. Which of the following sentences appears in an email of inquiry? A.I am writing to complain about my recent trip to Malaysia. B.I’m writing this email to ask you about some information related to the special offer for the summer vacation. C.I have a couple of complaints about my trip to Malaysia last vacation. D.We held a meeting on 21 January to discuss possible solutions. 3. Choose the most suitable sentence to tell someone how to avoid a common mistake. A.Don’t forget to turn off the oven when you leave. B.Not forget to turn off the oven when you leave. C.Forget to turn off the oven when you leave. D.Not to forget turn off the oven when you leave. 4. Choose the best answer to complete the following sentence: “I don’t know ……. she likes me or hates me.” A.who B.what C.which D.whether 5. Fill in the blank with suitable word(s) for the sentence of acknowledging. “Thank you for your email dated November 17 _______ about the unhelpful store clerk in our store in the Marina Store shopping mall.” A.complain B.complaining C.saying D.sending 6. Choose the correct relative pronoun to fill in the blank: “I had to meet with my neighbor, ......... dog I have been watching.” A.which B.whose C.who D.whom 7. In an opinion essay, …………. is a sentence that expresses the main idea of the essay. A.thesis statement B.topic sentence C.general statement D.supporting sentence 8. Anna needed some money, ______ she took a part-time job. A.or B.so C.but D.and 9. The first paragraph in an opinion essay is the …………... A.conclude B.introduction C.body D.conclusion

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