bài tập halogen 10 ( ôn hè )
... proton và nơtron . 3. Trong các câu sau , câu nào sai khi nói về t/c hoá học của ozon ? A. Ozon kém bền hơn oxi B. Ozon oxi hoá cả các kim loại Au , Pt C. Ozon oxi hoá Ag thành Ag 2 O D. Ozon ... ®Þnh C% cđa 2 dd ®Çu . A. 38 ,75 % vµ 28 ,75 % B. 39 ,75 % vµ 29 ,75 % C. 40 ,75 % vµ 30 ,75 % D. KÕt qu¶ kh¸c 21. Cho dd NaOH 20 % t¸c dơng võa ®đ víi dd FeCl 2 10 % , ®un nãng trong kh«ng khÝ ®Ĩ ph...
Ngày tải lên: 04/07/2013, 01:25
Anh 6 on he 2009
... Hoang is … doctor. 4- There is … lamp on the table. 5- Is your father … engineer? No, he isn’t. He s … teacher. 6- We live in … house on Ngo Quyen street. 7- Is there … clock on your classroom? 8- ... This is Mai. She is my classmate. She is twelve years old. She is a student. She lives in a big city. She is in Grade 6. She gets up at six every morning. She washes her face at 6.10....
Ngày tải lên: 02/09/2013, 19:10
... English 7) II. Rewrite these questions using “ how + adj 1. What’s the length of the Nile River ? 2. What’s the depth of the Amazon River ? 3. What’s the width of the schoolyard ? 4. What’s the breadth ... ? 6. What’s her height ? 7. What’s the thickness of the Great Wall of China ? 8. What’s the height of Mount Everest? 9. What’s the weight of these books ? 10. What’s the age of your fat...
Ngày tải lên: 04/08/2013, 01:25
Đề cương ôn tập Anh 7-HKI
... ………………………does she iron her own clothes?- On Sunday morning 2. ………………………do you do ?- I go fishing. 3. ………………………do you go to the amusement center?- Once a week 4. ………………………helped you with cleaning the floor?- ... computer. 7. She weighs 40 kilos . 8. Mary and Peter are the same height. 9. The clothing store opens every day. 10. Susan will return on Sunday. IV. Fill in the blanks w...
Ngày tải lên: 04/08/2013, 01:25