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1.Chứng minh rằng 2 số tự nhiên liên tiếp là 2 số nguyên tố cùng nhau
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1: Trình bày những thành tựu cơ bản trong công cuộc xây dựng CNXH ở Liên Xô từ 1945 đến nửa đầu những năm 70? Câu 2: Trình bày nguyên nhân dẫn đến sự khủng hoảng và sụp đổ của chế độ XHCN ở các nước Đông Âu và Liên Xô? Câu 3: Trình bày các giai đoạn phát triển của phong trào giải phóng dân tộc sau năm 1945 và một số sự kiện tiêu biểu của mỗi giai đoạn? Câu 4: Sự ra đời và ý nghĩa lịch sử của nước cộng hoà nhân dân Trung Hoa? Câu 5: Nêu những thành tựu của công cuộc cải cách, mở cửa ở Trung Quốc từ cuối năm 1978 đến nay? Ý nghĩa của những thành tựu đó? Câu 6: Hoàn cảnh ra đời, mục tiêu và nguyên tắc hoạt động của tổ chức ASEAN? Thời cơ và thách thức của Việt Nam khi gia nhập ASEAN?

I. Complete the dialogue with appropriate sen sentences. Write the letters of the sentences (A - G) A. How do the Scot celebrate Hogmanay B. I've always wanted to spend New Year in Scotland C. Was the street crowded with people D. What did you do for your holidays last year E. What else happened at the Hogmanay celebration F. Did you go to the street party G. Oh, what a night Jane: I can’t wait for the Christmas and New Year holidays. Andrew: Me too. (1) __________________________________________________ Jane: Well, I spent time with my family at Christmas. And then I flew to Edinburgh to visit some friends and spend my New Year holiday with them. Andrew: Lucky you! (2) __________________________________________________ Jane: In Scotland, they call New Year’s Eve Hogmanay and it’s the most fun. Andrew: (3) ____________________________________________________________ Jane: They celebrate it with street parties, concerts, fireworks and fire spectaculars. Andrew: (4) _____________________________________________________________ Jane: Yes, of course. We went to Princes Street for a massive street party. Andrew: (5) _____________________________________________________________ Jane: Yes, very ... I heard there were about 80,000 people in attendance. Andrew: (6) _____________________________________________________________ Jane: There were loads of bands playing different live music, a laser show and a huge fireworks display at midnight from the Edinburgh castle. Andrew: (7) _____________________________________________________________ Jane: It’s my most memorable holiday. You should go and spend New Year in Scotland.

BÀI ĐỌC ÔN TIẾNG ANH 9 I . Read the text carefully , then complete it with the words provided (2pts) Collapse more died damaged caused earthquake struck broke On January 17,1995, a strong earthquake (1)……….below Awaji Island across the bay from Kobe . It was t he most deadly (2)……………. to hit Japan since 1923 . The quake(3)……… ………buildings and bridges to (4)………….. and fires..(5)……..out throughout the city. In all, about 5000 people (6)……….and more than 21,000 people were injured. (7)……….than 30,000 buildings were (8)……………by the quake and resulting fires, and hundreds of thousands were left homeless. II. Đọc đoạn văn sau và chọn đáp án đúng điền vào chỗ trống (2đ) Read the following passage, then choose the best answer for each question. In many countries nowadays, electricity, gas and water are….(6)…… . Companies which produce household goods realize that consumers want …..(7)…….that both work effectively and save money. In North America, for example, household lighting accounts…...(8)…… 10% to 15% of the electric bill, ……..(9)………this amount can be reduced by replacing an ordinary 100-watt light bulb with an energy-saving one. Consumers can save about US $ 7 to US $ 21 per bulb doing so. In Europe, when you buy electrical goods…..(10)…..as refrigerators, freezers and washing machines, there is a labeling scheme telling you how …..(11)……efficient each model is, so you can compare…..(12)…..appliances and then choose which one to buy. The final result is that these ……(13)…….will save money as well as conserve the earth's resources. 6 . A. necessary B. necessarily C. necessities D. necessitate 7. A. produce B. production C. productive D. products 8. A. in B. for C. at D. from 9. A. so B. and C. but D. although 10 A so B. therefore C. such D. if 11.A. energetic B. energies C. energy D. energetically 12 A . differ B. different C. differently D. difference 13. A innovate B.innovative C. innovator D. innovations III/ Đọc đoạn văn sau và chọn từ đúng nhất để điền vào chỗ trống. (2,5đ) power- effective-nuclear-advanced-pollution-heat-stored-electricity-energy-panels Are you looking for a cheap, clean,(1).................source of power that doesn’t cause(2)................ or waste natural resources? Look no further than solar (3)................. from our sun. At present, most of our (4)................. comes from the use of coal and gas, oil or (5)................power. This power could be provided by the sun. One percent of the solar energy that reach the earth is enough to provide (6)................. for the total population. Many countries are already using solar energy. Solar (7)................... are placed on the roofs of our houses and the sun’s energy is used to (8)................. waster. The energy can be stored (9)............... for a number of days so on cloudy days you can use solar energy, too. Sweden has an (10)....................solar energy program. There, all buildings will be heated by solar energy and cars will use solar energy and cars will use solar power instead of gas by the year 2015. IX Read the following passage and do exercise below it Air pollution is caused of ill health in human beings. In a lot of countries, there are laws limiting the amount of smoke which factories can produce although there is not enough information on the effects of smoke on the atmosphere. Doctors have proved that air pollution causes lung diseases. The gases from the exhausts of cars have also increased air pollution in most cities. The lead in petrol produces a poisonous gas, which is often collected in busy streets circled by high buildings. Children who live in areas where there is a lot of lead in the atmosphere cannot think as quickly as other children, and are clumsy when they use their hands. *Questions 1. What does the air pollution cause? 2. Who has proved that air pollution causes lung diseases? 3. Is there air pollution in the city? Why or why not? 4. What happens to the children who live in areas where there is a lot of lead in the atmosphere?

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