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Cho khí H2 tác dụng với Fe2O3 đun nóng thu được 11,2g Fe. Khối lượng Fe2O3 đã tham gia phản ứng là:
Thích Trả lời Chia sẻ

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1. choose the word that has different stress pattern A. collect B. advise C. family D. prepare phần hai la mã : choose the best answer to complete the following sentences 1. she arrived early ................. order to get a good seat A . on B. in C. out D. at 2. It's difficult early ................... your direction A. to follow B. following C. to follwing D. followed 3. would you mind .................. in the front of the taxi , Mart ? A. sit B. to sit C . sitting D. siting 4. the boy .....................over there is my brother A. Stand B. stood C. standing D. being stood 5. I was cooking for dinner .......................... A . then the phone rang B. then the phone was ringing C. when the phone rang D. when the phone was ringing 6. the leader said that ......................ta award the prize to you A. he is pleasing B. he was pleasing C. he is pleased D. he was pleased . ( Làm hộ tớ vs ạ ) .

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