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Viết công thức của các lọa phân tử Cu2O bt Cu có đồng vị 65 63 và oxi có đvi 16 17 18( giống bài 6 sgk lp 10 trang 18 nhg thay CuO_> Co2O. Viết công thức của H2O bt đvi H 1,2 đồng vị O 16 17 18 ( giúp mk vs ạ mk cần gấplawms lm giống bì trong sgk í chỉ thấy thôi
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Dear Jane, I'm sorry for not(1)__ to you for two months. In my postcard sent to you when I was on vacation in July, I told you about a new friend of(2)__, Lisa Moran, who lives near my uncle's farm in Napan Valley, California. You may be curious to know what she is(3)__. Well, Lisa is of our age-17- and not very tall or slim. In fact, she has(4)__ rounded shoulders and a plump face. The best(5)__ on Lisa's face are her green eyes and the two simples on her checks. She(6)__ lively with her hair cut short and dressed in(7)__ clothes- jeans and a T-shirts. When I first met her at my cousin's birthday party, I was attracted by her(8)__ and pleasingly direct manners. Curiuosly enough, Lisa has the same(9)__ in music as you and I. That's(10)__ about Lisa for the moment. How have you been doing with your school work? Please write soon. 1. A.write. B.to write. C.writing. D.wrote 2. A. I. B.me. C.my. D.mine 3. A.looking. B.like. C.seen D.similar 4. A.slightly. B.hardly C.scarcely. D.reasonably 5. A.aspects. B.points C.features. D.marks 6. A.feels. B.seems C.appears. D.looks 7. A.casual. B.formal C.sports. D.trendy 8. A.light-hearted. B.high-handed. C.self-centered D.easy-going 9. A.taste. B.hearin C.sense. D.way 10. A.all. B.enough C.end. D.most

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