a+b= - 4 ⇒ a = -4 - b (1)b+c= - 6 => c = -6 - b (2)c+a= 12 thay (1) (2) vô ta được pt : -6 - b + -4 - b = 12 ⇒ b = - 11 có b = -11 thay vô (1)(2) có a = 7 ; c = 5
$a+b=-4; b+c=-6; c+a=12$
$⇒a+b+b+c+c+a=(-4)+(-6)+12=2$
$⇒2(a+b+c)=2$
$⇒a+b+c=2:2=1$
$⇒c=1-(-4)=5$
$⇒b=(-6)-5=-11$
$⇒a=7$
Read the text below and choose the correct word for each space. For each question, mark the correct letter A, B, C or D. HONEY Honey is a sweet liquid made by bees. It (1) ............. of water and sugars. Bees may travel as (2) ............. as seventy-five thousand kilometers and visit over two million flowers to produce just half a kilo of honey. The color and flavor of honey depend (3) ............. the type of flower visited. In (4) ............., there are more than three hundred (5) ............. of honey. The lighter-colored ones are generally milder in flavor than darker honey. In ancient (6) ............., honey was the main sweet food, as sugar was very (7) ............. Honey was of great (8) ............. to the ancient Egyptians, who used it as payment. Today, honey is produced and eaten in (9) ............. part of the world. Research suggests that it prevents tiredness and improves athletic performance. However, honey is not just food - it (10) ............. be taken for sore throats and is used in many skin and hair-care products. Trung tâm Anh Ngữ Nhung Phạm 27N7A KĐT Trung Hòa Nhân Chính – 0946 530 486 – 0964 177 322 2 1 A. involves B. contains C. includes D. consists 2 A. well B. long C. soon D. far 3 A. to B. on C. for D. with 4 A. case B. order C. fact D. place 5 A. varieties B. collections C. sets D. differences 6 A. seasons B. times C. years D. dates 7 A. distant B. rare C. small D. slim 8 A. cost B. price C. value D. charge 9 A. all B. some C. most D. every 10 A. shall B. need C. can D. ought
chị giúp em với chị nhungpham ơi II. If a word or phrase in bold is correct, put a tick. If it is incorrect, rewrite it correctly. 1. Hardly Tom had opened the door when the dog ran out into the street. ................. 2. Only when I read the book did I realize why it was so special. ................. 3. Not only you passed the exam, but you also got an A! ................. 4. Not until do I see Greg next week will I know whether he got the job. ................. 5. No sooner had we found our seats than the film began. ................. 6. At no point while the race is taking place members of the public are not allowed onto the track. ................ 7. Under no circumstances do the equipment to be used without supervision. ................. 8. Little I thought that one day my best friend would become prime minister. ................. 9. Never did I be so pleased to see someone else succeed. ................. 10.Hardly I had put the baby to bed when she started crying. .................
Chị giúp em với chị nhungpham ơi I. Using the words given and other words, complete the second sentences so that it has a similar meaning to the first sentence. Do not change the word given. 1. You should never use a lift immediately after an earthquake. account On ........................................................................ a lift immediately after an earthquake. 2. We had never listened to such an interesting speech. before Never ........................................................................ such an interesting speech. 3. They wouldn’t reject such an offer. means By ........................................................................ such an offer. 4. Julie had just arrived when the lights went out. sooner No ........................................................................ the lights went out. 5. I never received good marks in Math at school. receive Not ........................................................................ good marks in Math at school. 6. The waitress told me that the restaurant was about to close and I’d scarcely started eating. when Hardly ........................................................................ the waitress told me that the restaurant was about to close. 7. He can’t leave the court until he has testified. can Not until he ........................................................................ the court. 8. You mustn’t interrupt me during the meeting. No Under ........................................................................ me during the meeting.
Đổi sang câu nghi vấn Giúp mình nhé
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Giải hộ bài 2 với nha Cành nhanh càng tốt
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