Bài 1: Cho 32g Cu tác dụng với O2 thu được CuO a) PTHH b) Tính thể tích O2 cần dùng? đktc? c) Tính khối lượng CuO thu được Bài 2: Hòa tan 13g Zn bằng axit H2SO4 thu được ZnSO4 và H2 a) PT b) Thể tích khí H2 sinh ra ở đktc c) Tính khối lượng H2SO4 phản ứng

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1. Finish the following sentences in such a way that it means exactly the same as the sentences printed before . (2 points) 1. Your hair looks too long. You should have it cut soon. -> Your hair looks too long. You......................................................................... 2. It’s essential that children have the same educational opportunities. -> Children need....................................................................................................... 3. Because of Mary’s shyness, she didn’t have many friends. -> Mary didn’t.......................................................................................................... 4. “Karen won’t be here tomorrow.” Ann told me. -> Ann said............................................................................................................................ 5. Penguins cannot fly. -> It is impossibble.................................................................................................... 6. Most parents spend little time talking to their kids. -> Most parents do......................................................................................... 7. You need to put on more warm clothes. It’s cold outside. -> It’s necessary.............................................................................................. 8 Tom is absent today, because he is ill. -> Because of.................................................................................................. 9. “Meet me at the gate of my school!” Sue said -> Sue told me.................................................................................................. 10 I couldn’t speak English until I entered secondary school. -> I was ................................................................................................... 11 1. In general, attending kindergarten in the US is voluntary. -> Attending kindergarten in the US ........................................................ 12. You need to put on more warm clothes. -> It’s necessary.............................................................................................. 13. Tom is absent today, because he is ill. -> Because of.................................................................................................. 14. “Tickets will be on sale here next Friday!” Nick said -> Nick said that.............................................................................................. 15. My son couldn’t talk until he was at the age of two. -> My son was ................................................................................................