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taihtc
2 năm trước
Dùng CO khử hết 58 gam Fe3O4 thành Fe, lấy toàn bộ khí sản phẩm sục từ từ vào dung dịch nước vôi trong dư, sau phản ứng hoàn toàn thu được a gam kết tủa. Giá trị của a là
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giải thích nữa Question 1. My bother / wish / he / speak English / fluent / as / native speakers. A.My brother wishes he could speak English as fluently as native speakers. B.My brother wish he could Speak English fluently as native speakers. C.My brother wish he could speak English as fluent as native speakers. D.My bother wishes he could speak English as fluent as native speakers. Question 2: opinion / election / fair. A.As my opinion, the election was fair. B.In my opinion, the election was fair. C.According to my opinion, the election was fair. D.In my opinion, I think the election was fair. Question 3: Father’s Day / be / celebrated / third / Sunday / June / countries. A.Father’s Day celebrated the third Sunday in June in countries. B.Father’s Day is celebrated on the third Sunday in June in some countries. C. Father’s Day is celebrated on third Sunday in June in some countries. D.Father’s Day celebrated the third Sunday in June in some countries. Question 4: “Why don’t you postpone your trip till the autumn, Jim?” said Sarah. A. Sarah suggested that Jim should postpone his trip till the autumn. B.Sarah asked Jim why he postponed his trip till the autumn. C. Sarah wondered if Jim wanted to postpone his trip till the autumn. D.Sarah didn’t think it was a good idea for Jim to postpone his trip till the autumn. Question 5: No one has asked me that question before. A.That question has never been asked me before by anyone. B.I have never been asked that question before. C.I have ever been asked that question before. D.That question has ever been asked me by no one before.

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