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2 năm trước
hợp chất A có tỉ khổi so với khí oxi là 2 a) tính khối lượng mol của hợp chất b) hãy cho biết 5,6 lít khí A (ở đktc) có khối lượng là bao nhiêu gam MONG AD GIÚP EM
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68181 Oak City is very modern and beautiful. There aren't any (18) (19). Is there any pollution in the Oak City? There isn't much pollution so there isn't much tratfic. Everyone travels (20) everyone has got a lot of free time. Are there any unfriendly people in Oak City? No - so coe dnu spend a little time here! 17. A. neither 18. A. beautiful buildings and there's beautiful scenery around the city. bike and walks, so there aren't many accidents. No one works, so C. too C. pretty C. many C. with B. either D. so D. unpleasant D. lots D. by B. ugly В. по 19. A. some 20. A. on B. in II/ Read the following passage and answer the questions. 1 pt. Lan goes to Nha Trang with her family on holiday. Now, She stays at a hotel on the side of the beach. In the early morning, She goes to the sea and swim for an hour. Then she has breakfast in a canteen on the beach to enjoy fresh air in the morning, In the afternoon, She takes some photos of the sights. She is staying in Nha Trang for four days and takes a lot of nice photos. She is buying some postcards, some posters and souvenirs but without books for her friends. It is an enjoyable holiday because she is very happy and has a lot of fun. 21. Where does Lan go for her holiday? 22. What does she do in the early morning? 23. How long is she staying in Nha Trang? 24. Does she buy any books for her friends? PART D. WRITING (2.0 pts) Section I. Rewrite the sentences with the same meanings, using words giving. (1.0 pt) oll trees

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