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hanhim
2 năm trước
Giải thích lý do luôn ạ :< Câu 28 : Kí hiệu về số lượng NST trong các tinh trùng sinh ra từ 1 tế bào sinh tinh 2n có 1 cặp NST tương đồng không phân li ở giảm phân I là Câu 29 : Sự rối loại phân li 1 cặp NST tương đồng ở các tế bào sinh dục của cơ thể 2n trong giảm phân I có thể hình thành các loại giao tử bất thường là
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Part 3: Circle the correct answer: (Comparison) 1. Of the four shirts, which is__________expensive? A. the best B. the most C. the more D. the greater 2. The bigger the flat, the__________the rent is. A. expensive B. more expensive C. expensively D. most expensive 3. His father's illness was__________we thought at first. A. more seriously as B. as seriously as C more serious than D. as serious than 4. My brother felt tired last night, so he went to bed__________usual. A. more earlier than B. as early than C. more earlier as D. earlier than 5. Mary is__________from other women I know. A. different B. as different C. differs D. more different 6. The teacher speaks English__________we do. A. fluently B. more fluently C. most fluently D. more fluently than 7. It is the________accident in the history of the city. A. badest B. most bad C. worse D. worst 8. Nga sings_________ than this singer. A. well B. better C. gooder D. more good 9. Going by motorbike isn't__________convenient as going by car. A. so B. as C. more D. A & B are correct. 10. Of the two tables, the round one is__________ A. the nicest B. the nicer C. nicer D. a nice one

Part 2: Fill in the blanks. Using the words below: (although/ so/ neither…nor/ though/ neither/ both/ but also/ nor/ although/ even though) 1. He decided to quit the job _________ he got the high salary. 2. When he came to the counter of pay he found that he had _________ cash _________ his credit card with him. 3. ______________ the students nor their lecturer uses English in the classroom. 4. The second-hand car Patrick bought was almost new _________ it was made in the 1990s. 5. Mai worked hard, ______ she passed her exam. 6. ____________ she was very tired, she helped her brother with his homework. 7. Keith decided to give up his job _______________ I advised him not to. 8. Neither Louise ____________ Edna will be at school today, because they’re ill. 9. I’m so lucky! I went to __________Spain and Tenerife this year! 10. Not only John ___________ his two brothers play football as their recreation every weekend.

cHỈ CẦN ĐÁP ÁN THÔI NHÉ II. Read the following passage and choose the correct answer. The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity. Converting waste products to gases or oil is also an efficient way to dispose of waste. Experimental work is being done to derive synthetic fuels from coal, oil shale and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness - power with giant windmills. Geothermal power, heat from the earth, is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but today it supplies only four percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of the temperature differences in ocean water to produce energy. 1. Which is the best title of the passage? A. Efficient Ways of Disposing of Waste B. The Use of Water Productions for Energy C. The Search for Alternative Sources of Energy D. New Discoveries in Geothermal Power 2. In the second paragraph, the phrase “synthetic fuels” could best be replaced by which of the following? A. Biological fuels B. Low burning fuels C. Fast burning fuels D. Artificial made fuels 3. Which of the following is NOT mentioned in the passage as an alternative source of energy? A. Burning of garbage B. Geothermal power C. Synthetic fuels D. Electricity 4. According to the author, the impracticability of using coal, oil shale and coal tars as sources of energy is due to ___________ . A. their being time consuming B. their being money consuming C. the scarcity of sources D. the lack of technology their being money consuming 5. The word “it” in the last paragrph refers to ____. A. alternative source B. the United States C. hydroelectric power D. Electricity 6. What can be inferred from the last paragraph? A. Hydroelectric power will be the main source of energy B. Synthetic fuels will be the principal source of alternative energy C. Alternative energy will come from a variety of sources D. All alternative production of energy will be delivered from water.

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