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Nhinhi12k1
2 năm trước
Bài tập 14: Nguyên tố X có thể tạo thành với Al hợp chất AlaXb , mỗi phân tử gồm 5 nguyên tử , PTK là 150 . Hãy xác định nguyên tố X?
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VIII. Complete the following sentences with the correct form of the words in brackets. 1. Street are decorated with ________________ lights and red banners. (colour) 2. There are many _________ differences between the two communities. (culture) 3. She gave a wonderful ________________ as the Iron Lady – the former British Prime Minister Margaret Thatcher. (perform) 4. There were lively New Year ________________ all over the town. (celebrate) 5. When we heard she’d got the job, we all went off for a ________________ drink. (celebrate) 6. It is ________________ in America to eat turkey on Thanksgiving Day. (tradition) 7. What forms of ________________ do you participate in during the festival? (entertain) 8. The hall looked very ________________ with its Christmas tree. (festival) 9. Her eyes were wide with ________________ when she heard the news. (excite) 10. The Chinese New Year marks the ________________ of spring and the start of the Lunar New Year. (begin) XI. Read the text and choose the best answers: SAFETY TIPS FOR BUS PASSENGERS Always maintain a queue while waiting (1)______ a bus. Never stand on queue on the middle of the road. At the time of boarding a bus do not try to run or chase the bus. Once you are inside the bus, (2)______ a seat and hold firmly on the handrail if you are standing. Never try to (3)______ an overcrowded bus. Avoid (4)______ inside of a bus because your high-pitch noise may distract the attention of the driver and it could lead to a major (5)______ accident. 1.A.for B.to C.on D.in 2.A.hold B.sit C.take D.find 3.A.choose B.go C.wait D.board 4.A.shout B.shouting C.to shout D.shouts 5.A.road B.way C.path D.street XVI. Rewrite the sentences in the passive voice. 1. We usually lock the safe carefully. The safe .......................................................................................................... 2. We keep the safe in the bedroom on the second floor. The safe .......................................................................................................... 3. Yesterday the thieves stole everything in it. Yesterday everything in it .............................................................................. 4. We told the police about it. The police ....................................................................................................... 5. The police checked everything in the house. Everything in the house .................................................................................. 6. The police questioned everybody in the house. Everybody in the house .................................................................................. 7. The police surrounded the house. The house ....................................................................................................... 8. The police did not think that they caught the thieves. The police did not think that the thieves ......................................................... 9. We will use less electricity in the future. Less electricity ……………………….. 10.The students in my school will use public transport when travelling long distances. Public transport …………………… 11.I will turn off the lights when leaving a room or going to bed. The lights …………………….. 12.Wind power will offer a great deal of energy next century. A great deal of energy ……………… 13.We will use sources of energy more effectively for our future. Sources of energy ……………………. 14.People in the countryside will increase the use of biogas for cooking. The use of biogas …………………. 15.They will build a hydro power station in the North of the country next decade. A hydro power station ……………. 16.We will solve the problem of energy shortage by using solar energy. The problem of energy shortage …………..

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