$b:b+0×b$$=1+0$$=1$$-----$$a×1+0$$=a+0$$=a$
Đáp án:
a)Đáp án: 1 b)Đáp án: a
Giải thích các bước giải:
a)$\frac{b}{b}$+0×b=1+0=1
b)a×1+0=a+0=a
26. Plastic waste has entangled many marine creatures and __________ their population. (REDUCE) 27. The river has been __________ with toxic waste from local factories.(POLLUTE) 28. A lot of trees have been cut to make way for this new ________ area.(RESIDENT) 29. After the flood, there was a(n) ____________of cholera in the region and the underlying cause was linked to foods consumed that failed to meet the minimum hygiene standards. (BREAK) 30. You can have a say for our ocean by ____________this project. (JOIN) 31. Marine life is being ____________due to the huge amount of plastic waste dumped into our sea every day. (THREAT) 32. This factory has pumped ____________sewage into the sea, causing masses of fish to die in the past two months. (TREAT) 33. My uncle doesn’t want to live in the city center, because he cannot stand too much artificial lighting. He prefers country life where at night he can have peace and quiet with ____________light. (NATURE) 34. Trucks ____________tons of garbage here every day. (DUMP) 35. My aunt lives in Kellyville, a big suburb of Sydney. It’s a nice, peaceful and green ____________area. (SUBURB)
Giúp mình bài này ạ ...............................
Giúp mình bài này ạ .........................
IV. Supply the correct form of the word in the blanks (1.5pts) 25.She wants to be an ________________________in the future (account) 26.We can reach solar energy _______________________(effect) 27. VinFast will introduce _________________ cars and buses in Vietnam(electricity) 28. _______________________is a new idea in form of device or method (innovate) 29.The pesticides used on many farms are ______________________the water supply (pollute) 30. He left early to avoid ____________________________ ( disappoint) V. Rearrange the sentences from the cues given (0.5 pt) 31. energy-saving bulbs /We can reduce /by using / the electricity consumption ______________________________________________________________________________ 32. and pesticides /Too many fertilizers / to the soil /are damaging/ _______________________________________________________________________________ VI. Rewrite the second sentences so that it has a similar meaning to the 1st sentence. (2pts) 33. The matter is very difficult so I can’t explain -> Because____________________________________________________________ 34. The principal encouraged our students to study hard -> The principal suggested our___________________________________________ 35. She didn’t finish her work yesterday because of her laziness -> As__________________________________________________________________ 36. Practice sports or you will be sick easily. -> If __________________________________________________________________
I. CHOOSE THE LETTER A,B,C OR D TO INDICATE THE WORD THAT DIFFERS FROM THE OTHER THREE IN THE POSITION OF PRIMARY STRESS IN EACH OF THE FOLLOWING QUESTIONS. 1. A. depend B. begin C. agree D. happen 2. A. vendor B. enjoy C. attend D. attract 3. A. entertain B. occasion C. astounding D. contestant 4. A. measure B. sculpture C. structure D. behave 5. A. cavern B. fortress C. event D. jgloo
II. Choose the word or phrase that best fits the blank space in the following passage( 1,5 pts) The water pollution problem Water pollution affects drinking water, rivers, lakes (13)_____ oceans all over the world. In many developing(14)______, it is usually a leading cause of death, by people drinking from (15)_______ water sources. You can help: -Never throw rubbish away anyhow. Always look (16)_____ the correct waste bin. -Use water (17)_____. Do not keep the tap running when not in use. -(18)_______ throw chemical, oil, paint and medicine down the sink. 13. a. and b. but c. or d. however 14. a. country b. countries c.city d. capital 15. a. polluted b. pollutant c. pollution d. pollute 16. a. up b. after c. at d. for 17. a. careful b. wisely c. helpful d. clean 18. a. Do b. Don’t c. Did d. Didn’t
Viết GT,KL và vẽ hình giúp mình
I. Choose the best answer: ( 3.0 pts) 1.I think we shouldn’t throw trash______the water. A. with B. over C. away D.in 2.What about using public buses _______motorbike? A. replacing for B. substitute C. instead of D. instead for 3. Is he interested in ________________ the other students? A. help B. helped C. to help D. helping 4. When is the __________________ coming to mend the burst pipe? A. electrician B. poet C. plumber D. preservationist 5.You should minimize your water in use. A. talk about B. come from C. turn on D. cut down 6.We have to stay at home ___________________ it is raining heavily. A. but B. however C. therefore D. because 7. Don’t be frightened! The snake is not ___________________. A. poisonous B. guilty C. direct D. viable 8. Everyone must take part in preventing ____________. A. foams B. forestation C. deforestation D. natural resources 9. The woman said she was sad that some tourists ____________ this area. A. avoided B. wandered C. spoiled D. wrapped 10.The streams will be covered ___________________ foam. A. about B. with C. for D. from
giả sử em gặp một người phụ nữ đáng thương đang trong tình cảnh lang thang cơ nhỡ. người đó cầu xin em giúp đỡ bằng cách cho cô ấy ở lại nhà làm người giúp việc cho gia đình . trong trường hợp này em sẽ xử xự như nào
1. These_______________will conserve the Earth’s resources (innovate) 2. We feel very________________today ( happiness) 3. There are __________________saving methods and inventions to use solar energy (energy) 4. If people stop using dynamite for fishing, a lot of sea creatures will be well ………………….._______(preservation) 5. Scientists are looking for an _______________way to reduce energy consumption (effect) 6. Lan spoke English ………………..after she lived in England for several months.( nature) 7. The_____________of waste paper can save a great amount of wood pulp( recycle) 8. He shouted and looked at me _____________when I broke the vase (anger) 9. …………………..knows no law (necessary) 10. The government tried to re-educate the law-breakers ____________(efficiency)
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