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cuocsongmauden99
2 năm trước
Cho các chất: `CaO`; `P_2O_5`; `CuO`, `Fe_2O_3`, dung dịch `HCl`, dung dịch `H_2SO_4` đặc. Chất nào có thể dùng làm chất hút ẩm và giải thích
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Các câu hỏi liên quan

1.Multiple choice 1. The sun __________ in the west. A. rises B. not rise C. doesn’t rise D. rise 2. The audience didn’t laugh ___________ his joke. A. for B. on C. at D. with 3. ___________ is a person who lives next- door or near you. A. neighbor B. relative C. cousin D. assistant 4. He is __________ to have good friends. A. lucky enough B. luckily enough C. enough lucky D. enough luckily 5. What is she like? – She is ___________________. A. tall B. thin C. beautiful D. kind 6. My sister’s hair is not _____________. A. sociable B. curly C. slim D. fat 7. Is your sister good enough _________________ all these poems? A. to understand B. understand C. understands D. understood 8. My nephew is studying hard __________ his exam next Friday. A. in B. at C. for D. to 9. My father ___________ me a new bike two days ago. A. took B. had C. bought D. brought 10. She’s tall and thin. She has ______________ . A. black hair long B. long black hair C. hair long black D. black long hair

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