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Anrio1122
2 năm trước
Bài 7: Có thể điều chế bao nhiêu kilôgam nhôm từ 1 tấn quặng booxxit có chứa 95% nhôm oxit, biết hiệu suất phản ứng là 98%.
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giải giúp em ạ In the home, you must (31)___________ matches, lighters and candles out of the reach of children. You must have a smoke detector on the floor, and test them monthly. In the (32)__________, you must keep sharp knives, scissors, hot meals and drinks out of reach of children. You must keep children out of the kitchen during (33)__________. In the bathroom, you must check the bath water temperature before children get (34)_______, and always run the cold water first before adding the hot. In the (35)__________, you must keep furniture away (36)__________ the windows, to make sure children do not climb up and fall out of open windows. 31 a. to keep b. keep c. keeping d. kept 32. a. bathroom b. bedroom c. kitchen d. living room 33. a. to cook b. cooking c. cook d. cooked 34. a. in b. on c. to d. off 35. a. bathroom b. bedroom c. kitchen d. living room 36. a. in b. on c. for d. from

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