Đáp án:
Giải thích các bước giải:
bài 9: Thời gian tiêu thụ là : 60*10^6 / 6*10^6 = 10 (s)
bài 10: Số tế bào hồng cầu được tạo ra là : 25*10^5 * 60 * 60 =9*10^9 (tế bào)
bài 9:
Thời gian tiêu thụ là : 60.10^6 / 6.10^6 = 10(s)
bài 10:
Số tế bào hồng cầu được tạo ra là : 25*10^5 * 60 * 60 =9*10^9 (tế bào)
helppppppppppppppppppppppp meeeeeeeeeeeeeeeeeee
II. Complete the second sentence so that it means the same as the sentence before: 1. They intend to make this beach a clean and beautiful place again. They plan…………………………………………………………………….. 2. The students started to collect old clothes for their charity programme last week. The students have...………………………………………………………….. 3. If I don't leave now, I'll miss my train. Unless I leave ………………………………………………………………….. 4. Students at our school do a lot of outdoor activities. Students at our school take……………………………………………………… 5. Phuc is the most intelligent student in the class. No student ………………………………………………………………………
III. Choose the best answer. 1. Goods carried on a ship are called ------A. items B. merchandise C. cargo D. articles 2. Marianne seemed to take --------at my comments on her work. A. annoyance B. insult C. offence D. indignation 3. ---------the phone rang later that night did Lan remember the appointment. A. Just before B. Not until C. Only D. No sooner 4. John -----------his friend to go camping with him. A. attracted B. suggested C. appealed D. persuaded 5. He lost the race because he ----------petrol on the last lap. A. got out of B. ran out of C. made out of D. put out of 6. By the age of twenty-five he had ----------his ambition of becoming a pianist. A. obtained B. achieved C. completed D. reached 7. The drunken man was --------crazily from one side of the street to the other. A. racing B. scrambling C. marching D. staggering 8. A…………….. woman is needed to take care of two small children. A.confident B. reliable C. confidential D. faithful 9. My landlady is chasing me up -----------the rent, as it’s now three weeks late. A. of B. about C. for D. with 10. These clothes will be inappropriate for this evening. A. unsuitable B. unnecessary C. unattractive D. unavailable 11. The government hopes to _________ its plans for introducing cable TV. A. turn out B. carry out C. carry on D. keep on 12. I’ll be back in a minute, Jane. I just want to ________ my new tape recorder. A. try out B. try on C. look up D. take up 13. We can communicate with friends by ______of e-mail. A. means B. paths C. methods D. uses 14. Learning a foreign language also includes learning the ________ of that country. A. reputation B. scenery C. culture D. nature 15. We have worked out the plan and now we must put it into ________. A. practice B. reality C. fact D. deed 16. There were 50 ________ in the talent contest. A. competitors B. examinees C. customers D. interviewees 17. Her job was so ________that she decided to quit it. A. interesting B. stressful C. satisfactory D. wonderful 18. She ________ her husband’s job for his ill health. A. accused B. blamed C. caused D. claimed 19. Anne: “Make yourself at home.” - John: “__________” A.Yes, can I help you? B. Don’t mention it.C. Thanks! Same to you. D. That’s very kind. Thank you. 20. Minh: “Do you mind if I borrow a chair?” - Hung: “__________. Do you need only one?” A. I'm sorry B. Not at all C. Yes, I do D. Yes, I would
giúp em vs Huhuhu em sẽ cho 5sao ai trả lời
Lấy 3 ví dụ về biện pháp để tiết kiệm điện
I. Rearrange the words and phrases given to make meaning full sentences: 1.in/ Linh/ ocean fish./ is/ interested/ ……………………………………………………………………….. 2. many sports./ not/ I’m/ at/ good/ ……………………………………………………………………….. 3. like/ you/ best?/ Which/ will/ room/ ……………………………………………………………………….. 4. tomorrow./ We/ going/ are/ on/ picnic/ a/ ……………………………………………………………………….. 5. environment./ save/ They/ to/ want/ the/ ………………………………………………………………………..
Nếu có sai đề thì cứ làm đi rồi chỉ ra chỗ sai nhé
mọi người giúp mình với, mình đang cần gấp
Cho hình chữ nhật ABCD . Trên cạnh AB lấy điểm M , trên tia BC lấy điểm N sao cho góc MDN = 90 độ . Vẽ hình chữ nhật MDNP, chứng minh 5 điểm M , D , N , P , B cùng nằm trên 1 đường tròn (đừng làm tắt với ạ ;-;)
II. Find the word that has different stress pattern in each line. 6. A. domestic B. possible C. physical D. musical 7. A. refugee B. trainee C. Japanese D. engineer 8. A. physiography B. alternatively C. criminology D. unsuccessfully 9. A. repetitive B. electrical C. priority D. energetic 10. A. unhelpful B. unusual C. imprecise D. imperfect III. Find the words with the underlined parts pronounced differently from the others. 11. A. prepares B. erupts C. stops D. photographs 12. A. typhoon B. goose C. food D. flood 13. A. looked B. suggested C. minded D. decided
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