Câu 3: Trong quá trình học tập và rèn luyện cũng như trong cuộc sống để đạt được mục tiêu đề ra đòi hỏi mỗi người phải không ngừng kiên trì, nỗ lực với cả một quá trình...bởi, đẻ thực hiện được những mục đích lớn lao thì trước hết phải bắt đầu từ những việc nhỏ, đơn giản, bình thừơng nhất. Cần tránh nóng vội, chủ quan, hấp tấp.Hãy chứng minh câu nói trên là đúng trong quá trình chống dịch COVID hiện nay.
Bài tập vận dụng VD1: Hoà tan hoàn toàn 7,45 gam KCI vào 200ml H2O thu đưoc dung dịch A. Tính nồng độ %, nồng độ mol/l của dung dịch A. VD2: Hoà tan hoàn toàn 0,2 mol NaOH vào 500ml H20 thu được dung dịch B. Tính nồng độ %, nồng độ mol/l của dung dịch B. VD3: Hoà tan hoàn toàn 2,8 gam KOH và 5,85 gam NaCl vào 600 ml H2O thu được dung dịch C. Tinh nồng độ %, nồng độ mol/l của dung dịch C. VD4: Hoà tan hoàn toàn 4,6 gam Na vào 100 gam H20 thu được dung dịch D. Tính nồng độ %, nồng độ mol/I của dung dịch D. VD5: Hoà tan hoàn toàn 2,74 gam Ba vào 200 gam H2O thu được dung dịch E. Tính nồng độ %, nồng độ mol/l của dung dịch E. VD6: Hoà tan hoàn toàn 5,85 gam K và 13,7 gam Ba vào 400ml H2O thu đưoc dung dịch F. Tính nồng đo %, nồng đo mol/l của dung dịch F.
Exercise 1: Complete the sentence. Put in the present simple form of the verbs. 1. I ………………………….(study) my lesson every night. 2. My sister usually ……………….………(not take) sugar in her coffee. 3. He ………………...(like) to play football. 4. Your English lessons …………………………….(be) easy. 5. My boss always………..…………(rest) after lunch. 6. She always………………………(cook) dinner for her family. 7. Water always ………………………(freeze) at zero degree centigrade. 8. This student ………………………(study) hard every day. 9. My little boy often………………………(play) football at weekends. 10. Ann……………………… (speak) German very well. 11. She ……………………… (go) to school three days a week. 12. He ……………………(study) English very well. 13. It………………………(rain) in the Winter. 14. I……………………… (eat) my breakfast at 6 o’clock every day. 15. Mary and Peter……………………… (not go) to work on Saturday. Exercise 2: Arrange these words in order to make a question. 1. does / what time / get up / she → ………………………………?– At seven o’clock. 2. for / does / have / breakfast / she / what →………………………………..? – A bread and an egg. 3. to work / she / does / go / how → ………………………………?– By bus. 4. she / does / what / in the evening / do → ………………………….…… ?– She watches television. 5. bed / time / does / go to / what / she → ………………………………? – At nine o’clock. Exercise 3: Complete the sentences. Put in the past simple form of the verbs. 1. Mr. John. ………………………….…(teach) me French last year. 2. He ………………………..(live) in London from 1980 to 1985. 3. When…………….…you ………….…..(see) her ? Yesterday morning. 4. …………………..he………..(come) to see you last night ? Yes he did. 5. She ………………….……..(meet) her friend at the class meeting last Sunday. 6. I……………………..……..(study) music when I was at school. 7. They ………………………………..(sell) their car last year. 8. We………………………….…(walk) to Hoang Van Thu park three days ago. 9. We ………………………….….(spend) a lot of time playing game. 10. He ………………………………..…..(see) a terrible accident some days ago. 11. We ……………………….…….(say) to our friends last week. 12. Jack ……………………….…….(go) to the shop last night? 13. My mother……………………….…….(buy) some eggs at supermarket yesterday. 14. John……………..(fell) and ……………..(break) his arm. 15. He…………….. (attend) the birthday party yesterday. Exercise 4: Are the adverbs in the right position or not? If they are correct, put a tick. If they are not, write the correct answer. 1. He sings always when he's having a shower. ……...................................... 2. He speaks fluently five languages …………………………… 3. I was totally unprepared for the news. ……………………………. 4. The traffic isn't usually as bad as it was this morning. .............................................. 5. John frequently was away from home in his new job. .............................................. 6. They are at home these days hardly ever. .............................................. 7. I could never understand why he got so annoyed. .............................................. 8. Being alone brought her usually a sense of peace. .............................................. 3 / 10 9. Jim never phones me. I have always to phone him. ............................................... 10. She drives always carefully a car. …………………………….. 11. He gets up early seldom …………………………….. 12. He never may return to home …………………………….. Exercise 5; Find mistakes and then correct them. 1 The police is looking for the bank robbers who stole a large sum of money from the bank. ---------------------------------------------------------------------------------- 2. Mary immediate comes home after she finishes school ---------------------------------------------------------------------------------- 3. Our pets, two cats and a dog, needs to be taken care of while we are going out. ---------------------------------------------------------------------------------- 4. John did shouted at me when he met me at the station. ---------------------------------------------------------------------------------- 5. He sometimes plays badminton or joining a group of workers for talking. ---------------------------------------------------------------------------------- 6. Some parents believe that most of the homework are useless . ---------------------------------------------------------------------------------- 7. I’ d rather to stay home than go out tonight. ---------------------------------------------------------------------------------- 8. In the winter , old people wears special clothes to protect themselves from the cold . ---------------------------------------------------------------------------------- 9. It was an extremely frightened experience in my life. ---------------------------------------------------------------------------------- 10. These days, children has to do a lot of activities at school. ---------------------------------------------------------------------------------- Exercise 1: Complete the sentence. Put in the present simple form of the verbs. 1. I ………………………….(study) my lesson every night. 2. My sister usually ……………….………(not take) sugar in her coffee. 3. He ………………...(like) to play football. 4. Your English lessons …………………………….(be) easy. 5. My boss always………..…………(rest) after lunch. 6. She always………………………(cook) dinner for her family. 7. Water always ………………………(freeze) at zero degree centigrade. 8. This student ………………………(study) hard every day. 9. My little boy often………………………(play) football at weekends. 10. Ann……………………… (speak) German very well. 11. She ……………………… (go) to school three days a week. 12. He ……………………(study) English very well. 13. It………………………(rain) in the Winter. 14. I……………………… (eat) my breakfast at 6 o’clock every day. 15. Mary and Peter……………………… (not go) to work on Saturday. Exercise 2: Arrange these words in order to make a question. 1. does / what time / get up / she → ………………………………?– At seven o’clock. 2. for / does / have / breakfast / she / what →………………………………..? – A bread and an egg. 3. to work / she / does / go / how → ………………………………?– By bus. 4. she / does / what / in the evening / do → ………………………….…… ?– She watches television. 5. bed / time / does / go to / what / she → ………………………………? – At nine o’clock. Exercise 3: Complete the sentences. Put in the past simple form of the verbs. 1. Mr. John. ………………………….…(teach) me French last year. 2. He ………………………..(live) in London from 1980 to 1985. 3. When…………….…you ………….…..(see) her ? Yesterday morning. 4. …………………..he………..(come) to see you last night ? Yes he did. 5. She ………………….……..(meet) her friend at the class meeting last Sunday. 6. I……………………..……..(study) music when I was at school. 7. They ………………………………..(sell) their car last year. 8. We………………………….…(walk) to Hoang Van Thu park three days ago. 9. We ………………………….….(spend) a lot of time playing game. 10. He ………………………………..…..(see) a terrible accident some days ago. 11. We ……………………….…….(say) to our friends last week. 12. Jack ……………………….…….(go) to the shop last night? 13. My mother……………………….…….(buy) some eggs at supermarket yesterday. 14. John……………..(fell) and ……………..(break) his arm. 15. He…………….. (attend) the birthday party yesterday. Exercise 4: Are the adverbs in the right position or not? If they are correct, put a tick. If they are not, write the correct answer. 1. He sings always when he's having a shower. ……...................................... 2. He speaks fluently five languages …………………………… 3. I was totally unprepared for the news. ……………………………. 4. The traffic isn't usually as bad as it was this morning. .............................................. 5. John frequently was away from home in his new job. .............................................. 6. They are at home these days hardly ever. .............................................. 7. I could never understand why he got so annoyed. .............................................. 8. Being alone brought her usually a sense of peace. .............................................. 3 / 10 9. Jim never phones me. I have always to phone him. ............................................... 10. She drives always carefully a car. …………………………….. 11. He gets up early seldom …………………………….. 12. He never may return to home …………………………….. Exercise 5; Find mistakes and then correct them. 1 The police is looking for the bank robbers who stole a large sum of money from the bank. ---------------------------------------------------------------------------------- 2. Mary immediate comes home after she finishes school ---------------------------------------------------------------------------------- 3. Our pets, two cats and a dog, needs to be taken care of while we are going out. ---------------------------------------------------------------------------------- 4. John did shouted at me when he met me at the station. ---------------------------------------------------------------------------------- 5. He sometimes plays badminton or joining a group of workers for talking. ---------------------------------------------------------------------------------- 6. Some parents believe that most of the homework are useless . ---------------------------------------------------------------------------------- 7. I’ d rather to stay home than go out tonight. ---------------------------------------------------------------------------------- 8. In the winter , old people wears special clothes to protect themselves from the cold . ---------------------------------------------------------------------------------- 9. It was an extremely frightened experience in my life. ---------------------------------------------------------------------------------- 10. These days, children has to do a lot of activities at school. ----------------------------------------------------------------------------------