trộn v1 lít dd H2SO4 0,5M với V2 lít dd H2SO4 2M được 700ml dd H2SO4 1,2M. Tìm V1,V2

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I Dùng từ để hỏi để đặt câu hỏi cho các câu trả lời 1 I san her last nigh (When) 2 Her neighbor gave her a nice dress (What) 3 They returned to America two weeks ago (When) 4 Mrs.robinson bought a poster (Who) 5 My father was in ha noi Last month (Where) 6 He travelled to Nha Trang by coach (How) 7 She went to the doctor because she was sick (Why) 8 Nam left home at 7 o'clock yesterday (what time) 9 They played soccer last week (What) 10 We decorated our classroom on saturday evening (when) 11 Hoa tried her new dress on (What) 12 He talked to his teacher about the film on TV (Who) II.Rewrite the following sentences so that their meaning stays the same,using the worlds given 1.There was a loud noise next to my door last night.so I couldn't sleep. -->Because............. 2.Tornadoes can move objects as big a car -->Objects............. 3.Your parents are happy because you be have yourself well -->If............. 4.They provided food then cleared up the debris -->After............ 5.Although he had a good salary,he was unhappy in his job -->In spite of............. 6.He gets up early in the morning and he us -->he is used to....................... 7.He doesn't study hard so he will fail the final exam next month. -->If................... 8. I will stay at home unless I am invited -->If........................... 9. The accident happened because the train driver ignored a warning light --> If the train driver................. 10. Mr. Mills lost his job because the train driver ignored a warning light. -->If Mr.Mills................ 11. If we don't hear from you within 7 day, the order will be cancelled -->Unless................................ 12. She is now leading a normal life as a result off all the support she received from social workers -->If she........................ 13. The train left before he got to the station -->By the time.................... 14. We couldn't make the machine work --> The machine................ 15. The hurricane blew the roof off the house --> The house........... 16.Oil was slowly coating the edge of the shore -->The edge of the shore.............. 17. The government shouldn't let this situation get worse -->This state......................