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muốn phép chia có số chia là 7 số dư là 5 muốn phép chia đó trở thành phép chia hết và thường tăng thêm 2 đơn vị thì phải thêm vào số bị chia bao nhiêu đơn vị
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Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks. Rivers are one of the world's most important natural resources. Many cities are on large rivers, and (23)_______every country has at least one river that plays an important part in the lives of its people. Besides transportation, rivers (24) _______ food, water for crops, water to drink, and opportunities for recreation for people who live along their banks. And in order to get water for crops, engineers sometimes build a dam (25)_______a river and let the water become a lake behind the dam. Then people can use their water not only to irrigate fields but also to make electricity for homes and industries. However, the water often becomes (26) _______ when cities on river banks grow in size and the number of industries increases. We are learning that it is necessary to keep rivers clean if we want to enjoy the (27)_________of the natural resources. 23. A. many B. a lot C. plenty of D. almost 24. A. provide B. support C. assist D. create 25. A. over B. across C. among D. under 26. A. crowded B. overloaded C. polluted D. excited 27. A. interests B. benefits C. tips D. receipts Read the following passage and mark letter A, B, C or D on your answer sheet to indicate the correct word that best fits each of the numbered blanks. The natural environment includes all natural resources that are necessary for life: the air, the oceans, the sun and the land. Because they are vital for life, these resources must be protected from pollution and conserved. Ecologists study their importance and how to use them carefully. According to ecologists, resources are divided into two groups: renewable and non-renewable. When a resource is used, it takes some time to replace it. If the resource can be replaced quickly and easily, it is called renewable. If it cannot be replaced quickly and easily, it is called non-renewable. For example, grass for animals is a renewable resource. When cows eat the grass, the resource is used. If the soil is fertilized and protected, more grass will grow. Coal, however, is non-renewable because it takes millions of years to make coal. All fossil fuels are nonrenewable resources. 28. The natural environment consits of ______ A. the air and the land B. the oceans and the sun C. the sun and the land D. all natural resources 29. According to ecologists, there are ______resource groups. A. two B. three C. four D. five 30. If the resource can be ______, it is called renewable. A. burnt quickly B. replaced quickly C. divided properly D. used quickly 31. Grass for animals is a ______ resource. A. limited B. non-renewable C renewable D. clean 32. According to the passage, coal is non-renewable because it takes ______to make coal. A. hundreds of years B. thousands of years C. millions of years. D. billions of years

Mark letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions. 1. A. gather B. energy C. group D. biogas 2. A.nature B. change C. gravity D. basic Mark letter A, B, C or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. 3. A. expensive B. convenient C. engineer D. enormous 4. A. extensive B. dangerous C. important D. potential Mark letter A, B, C or D on your answer sheet to indicate the correct option to fill following spaces. 5. Non-renewable________ sources like coal and natural gases produce a lot of carbon dioxide. A. power B. fuel C. solar D. energy 6. This time next week we ________round the Mediterranean. A. will be sailing B. will sail C. will have sailed D. will be sailed 7. Hydroelectric power is produced by the fall of ________ trapped into a dam. A. air B. soil C. wind D. water 8. At 10 a.m. on Monday, they______ solar panels on the roof of my house toget power. A.will be putting B. will be put C. will putting D. will put 9.The school ______before new school year begins. A. will paint B. will be painted C. will be painting D. will painting 10. We try to make the future green by using vehicles or kinds of energy that are_______ A. environmentally friendly B. environment friendly C. environmentally friendship D. environmental friendly 11. Several governments try to the use of fossil fuels. A. waste B. save C. reduce D. increase 12. The wind, the sun, and the wave are some types of sources of energy. A. cheap B. costly C. changeable D. alternative 13. All the houses in our village will by solar energy. A. heated B. be heated C. being heated D. be heating Mark the letter A, B, C or D to indicate the underlined part that needs correction in each of the following questions. 14. You can save the electricity by turn off the lights when not using them. A B C D 15. A solution for the environmental problem will soon be finding by scientists. A B C D 16. Overpopulation is causing more problem than we can imagine. A B C D Mark letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following conversations. 17.Tom: "Congratulations! You've passed the exam." ~ John: "_______ " A. No, I don't think so B. Many thanks C. Sorry, I don't D. Not at all 18. Mike and Jenny are at their first meeting. - Mike: "Let me introduce myself. I'm Mike." - Jenny: "______. " A. You are welcome. B. It's my pleasure. C. I'm very pleased. D. Pleased to meet you. Mark letter A, B, C or D on your answer sheet to indicate the word CLOSET in meaning to the underlined word in the following question. 19.He’s bought me a smart new camera to change from my old one. A. recharge B. reuse C. replace D. redo 20. The city is facing serious pollution problems. A. hard B. minor C. false D. light Mark letter A, B, C or D on your answer sheet to indicate the word OPPOSITE in meaning to the underlined word in the following question. 21. Red minibuses often provide more convenient transport for riders. A. suitable B. available C. good D.unpleasant 22. The Glastonbury Festival is the most well-known festival in the UK. A. famous B. unpopular C. common D. favorite

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