user-avatar
thaiha13092003
2 năm trước
Để làm sạch FeSO4 có lẫn CuSO4 , có thể dùng hóa chất nào sau đây? A: Al B: Dung dịch NaOH C: Dung dịch H2 SO4 loãng D: Fe
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

II. Find and correct the mistake 1. Where(A) time is (B) it (C)? – It’s ten (D) o’clock. 2. My(A)mother watch (B) T.V in (C) the (D) evening. 3. Nam go(A)to (B) school at (C) 6.20 A.M in (D) the morning. 4. LiLi have(A)lunch at (B) 11.30 in (C) the morning (D). 5. I go(A)to (B) school on (C) 6.30 A.M in (D) the morning. III. Read the passage and then answer the following questions: Hi, my name is Peter. This is my father. He gets up at six o’clock. He has breakfast at 6.30 A.M. He goes to work at 7 o’clock. He works from 7.30 A.M to 4.30 P.M. He watches T.V in the evening. He goes to bed at 10.45 P.M. 1. Who is this? – This………………………………………………………………………. 2. What time does he get up? – He gets…………………………………………….. 3. What does he do at 6.30? – He has………………………………………………… 4. What time does he go to work? – He goes……………………………………….. 5. How many hours does he work a day? – He works…………….. hours a day. 6. What does he do in the evening? – He watches………………………………….. 7. What does he do at 10.45? – He………………………………………………………… 8. Where is he at 8.30 A.M? – He is………………………………………………………… IV. Circle the odd one out (tìm từ không cùng nhóm 1. A. eleven  B. twelve  C. twenty  D. time 2. A. where  B. what  C. when  D. o’clock 3. A. lunch  B. breakfast  C. ice-cream  D. dinner 4. A. evening  B. morning C. afternoon  D. work 5. A. go  B. watch C. have  D. lunch 6. A. school  B. work  C. bed  D. ten 7. A. Monday  B. Tuesday  C. January  D. Friday 8. A. at  B. from  C. to  D. T.V

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team