Quy đồng mẫu số các phân số a) âm 1 phần 6, 1phần âm 9, âm 1 phần mười hai b) 2 phần 3, 1 phần âm 4, âm 5 phần 6 ( giải rõ giúp e vs ạ, e đag cần gấp)

Các câu hỏi liên quan

I. Choose the words whose underlined part is pronounced differently from that of the others in each group. 1. A. abundant B. nuclear C. truck D. dump 2. A. played B. crossed C. described D. terrified 3. A. decided B. danced C. discussed D. pronounced 4. A. bread B. great C. instead D. spread 5. A. blood B. vocabulary C. doubtful D. boring 6. A. hydroelectric B. environment C. solar D. biogas 7. A. pleasure B. feed C. heat D. meat 8. A. plentiful B. electric C. renewable D. energy 9. A. few B. knew C. new D. sew 10. A. nuclear B. truck C. abundant D. dump II. Choose the word whose main stressed syllable is placed differently from that of the other in each group. 1. A. musician B. enormous C. natural D. improvement 2. A. effective B. plentiful C. dangerous D. limited 3. A. population B. education C. consumption D. satisfaction 4. A. energy B. countryside C. changeable D. volunteer 5. A. renewable B. artificial C. unfortunate D. continuous 6. A. different B. serious C. effective D. regular 7. A. dangerous B. countryside C. energy D. volunteer 8. A. incapable B. sincere C. loyalty D. success 9. A. development B. satisfaction C. population D. education 10. A. interfere B. convenient C. referee D. cigarette Choose the best answer to complete each of the following sentences. 1. The wind, the sun, and the wave are some types of __________ sources of energy. A. changeable B. alternative C. cheap D. costly 2. Remember to __________ the lights before going to bed. A. turn B. turn on C. turn off D. stop 3. People will reduce energy __________ as much as possible. A. consume B. consumption C. expense D. expenses 4. Nuclear power is expensive and dangerous __________ our environment. A. for B. to C. in D. with 5. Human is looking for a clean, cheap and __________ sources of energy. A. effective B. effect C. effectively D. effectiveness 6. Low energy light bulbs should be used to __________ electricity. A. spend B. buy C. convert D. save 7. We must __________ the amount of water our family used every day. A. lower B. reduce C. lessen D. narrow 8. At this time next month we __________ to Ha Long Bay for a holiday. A. will go B. will going C. will be gone D. will be going 9. By the middle of the 21st century, people in developing countries __________ more renewable energy. A. uses B. will be using C. used D. have 10. Fossil fuels are very common in our society but they __________ the environment. A. renew B. provide C. waste D. pollute 11. When you save energy, you not only save money, you also reduce the demand for __________ such as coal, oil, and natural gas and that is a great way to play a part in saving the planet. A. carbon footprint B. electricity C. fossil fuels D. biogas 12. In India, the demand for __________ has always been more than the supply. A. shortage B. sources C. slogan D. electricity 13. __________ energy is produced by collecting sunlight and converting it into electricity. A. Hydro B. Nuclear C. Solar D. Wind 14. There are many available __________ power sources in Vietnam including sun, wind, water, etc. A. nuclear B. hydro C. renewable D. solar 15. Laos and Cambodia have big plans for building up to 11__________ on the lower Mekong. A. dams B. slogans C. energy D. coals

Choose the letter A, B, C or D to complete the sentences with given words Question 3: Some/ people/ think/ buffalo-fighting/ Hai Phong/ violent. A. Some people think that buffalo-fighting in Hai Phong is violent. B. Some people think that buffalo-fighting in Hai Phong are violent. C. Some people thinks that buffalo-fighting in Hai Phong are violent. D. Some people thinks that buffalo-fighting in Hai Phong is violent. Question 4: Thanh Giong Festival/ commemorate/ Saint Giong/, an imaginary/ hero/ the/ Vietnamese. A. Thanh Giong Festival commemorates Saint Giong, a imaginary hero of the Vietnamese. B. Thanh Giong Festival commemorates Saint Giong, an imaginary hero of the Vietnamese. C. Thanh Giong Festival commemorate Saint Giong, an imaginary hero of the Vietnamese. D. Thanh Giong Festival commemorate Saint Giong, a imaginary hero of the Vietnamese. Question 5: I think/ it/ be/ waste/ of/ money/ buy/ expensive/ offerings. A. I think it be a waste of money to buy expensive offerings. B. I think it be a waste of money buying expensive offerings. C. I think it’s a waste of money buying expensive offerings. D. I think it’s a waste of money to buy expensive offerings. Rearrange the sentences to make meaningful sentences Question 6: During/ all/ stop/ the/ banks/ shops/ festival/ and/ servicing. A. During the festival, all banks and shops stop servicing. B. During the festival, all banks stop servicing and shops. C. During the festival, all stop banks and shops servicing. D. During the festival, banks and shops stop servicing all. Question 7: The/ by/ festival / as/ recognized / UNESCO / was/ of/ an/ intangible/ the/ cultural heritage / mankind. A. The festival was recognized by UNESCO as an intangible cultural heritage of mankind. B. UNESCO festival was recognized by the mankind as an intangible cultural heritage. C. The festival was recognized cultural heritage as by UNESCO an intangible of mankind. D. The festival was recognized mankind by UNESCO as an intangible of cultural heritage. Question 8: held/ is/ festival/ attend/ mountainous/ Although/ it/ people/ in/ many/ a/ the. A. Although held the festival is in a mountainous area, many people attend it. B. Although the festival is held it in a, many people attend mountainous area. C. Although the festival is held in a mountainous area, many people attend it. D. Although the festival is held many people in a mountainous area, attend it. Question 9: Festival/ first/ This/ have/ is/ Firework/ the/ first/ I/ ever/ time/ attended/ a/ Firework Festival. A. This is the first time I have ever attended a Firework Festival. B. This is Firework Festival I have a the first time ever attended. C. This is the time first I have ever Festival attended a Firework. D. This is time I have ever the first attended a Firework Festival. Question 10: every/ crafts/ honoring/ Carnival Hue/ Vietnamese/ February/ is/ traditional/ held. A. February Carnival Hue is held every honoring traditional Vietnamese crafts. B. Vietnamese is held Carnival Hue every February honoring traditional crafts. C. Carnival Hue is held honoring every February traditional Vietnamese crafts. D. Carnival Hue is held every February honoring traditional Vietnamese crafts. Rewrite sentences without changing the meaning Question 11: Let’s go to the Flower Festival tomorrow. A. Why not go to the Flower Festival tomorrow? B. What not go to the Flower Festival tomorrow? C. When not go to the Flower Festival tomorrow? D. Where not go to the Flower Festival tomorrow? Question 12: Don’t miss the opening ceremony of the festival. A. Let’s miss the opening ceremony of the festival. B. Do not remember the opening ceremony of the festival. C. Forget the opening ceremony of the festival. D. Remember to attend the opening ceremony of the festival. Question 13: This is the most wonderful performance I have ever seen. A. It’s such a boring performance that I can’t see. B. I have never seen a more wonderful performance before. C. This performance is the worst I have ever seen. D. I don’t like this performance. Question 14: This show is suitable for children under the age of 10. A. This show is proper for children under the age of 10. B. This show is super for children under the age of 10. C. This show is probable for children under the age of 10. D. This show is enable for children under the age of 10. Question 15: The theater has 1000 seats. A. There are one thousand seats in the theater. B. The theater are one thousand seats. C. Seats have one thousand in the theater. D. One thousand seats are there in the theater