cho x và y là 2 đại lượng tỉ lệ nghịch với nhau theo hệ số tỉ lệ là a. y tỉ lệ thuận với z theo hệ số tỉ lệ là b. hỏi x và z có tỉ lệ thuận với nhau ko? tìm hệ số tỉ lệ nếu có làm ơn giúp mình với

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III. Put into the correct form of the following words. 1. Staying at home is the most …………………way of relaxation. (bore) 2. There were more than thirty ………………………… in the class. (study) 3. It is …………………………….. to eat a lot of junk food. (health) 4. I love …………………………… pottery because it makes me more creative. (make) 5. Water……………………………… began in the 1 1'" century. (puppet) 6. Our volunteer group always helps street …………………..when we have free time. (child) 7. My uncle is a famous………………….. (art) 8. A thief stole all the…………………… in the museum. (paint) IV. Find and correct the mistakes in the following sentences. V. Put the verbs in the correct tense. 1.My brother (pass)……………………….. the exam into university last year. 2. She (study) ……………………………….about people's health for years. 3. The visit to the Temple of Literature (be)………………… so meaningful to me. 4. All the homework (do)……………………………… by Peter this morning. 5. John enjoys (arrange)……………………………….. flowers in the morning. 6. Junk food and seafood sometimes (give) ……………………………..an allergy. 7. All the students in our school (visit)……………………… the first University in Viet Nam. 8. You had better not (spend)……………………………………. much time on TV. 9. David and his father (visit)……………………………… the Temple of Literature last week. 10. A new university (establish)………………………… in our province in the near future. VI. Choose A, B, C, or D for each gap in the following sentences. (2.0 p). 1. Ngoc _______eating fast food because it’s not good for her health. A. Likes B. loves C. hates D.enjoys 2. If you want to live long, you _______ eat much red meat. A . Should B. needn’t C. have to D. shouldn’t 3. Don’t read in bed, _______ you’ll harm your eyes. A. Or B. and C. but D. so 4. Nam wants to lose weight, ________ he began jogging last Sunday. A. Or B. and C. but D. so 5. ________ I playing board games interesting because I can play them with my friends. A. Think B. find C. say D. tell 6. This summer Lan ________ three volunteer activities. A. Has participated in C. participates in B. Participated in D participating in 7. Before moving to Ha Noi, my parents ______ in Hai Phong. A. Have lived C. lived B. Have been living D. live 8. My friend has decided to use _____ electricity by using more solar energy instead. A. More B. less C. much D. fewer 9. A:This weekend I’m going to the SOS village to teach the children there. B: I ________ you. A. Join B. am joining C. will join D. have joined 10. You’ll become healthier if you consume soft drinks. A. More B. less C. much D. fewer

B. GRAMMAR & VOCABULARY I. Match the words in the list with a verb below. the homeless grandparents rubbish postcards bottles table tennis basketball letters places the poor mum wishes balling Ha Long Bay cans recycle : ………………………………………………………………………….. send ……………………………………………………………………………….: help : ………………………………………………………………………………… visit : ……………………………………………………………………………….. play: ………………………………………………………………………………… II. Complete these sentences using the words or phrase in the box. temperature improve taught collection rugby free time symptoms charity 1. When I was small, my father ……………………. me how to fix the broken bike. 2. …………………….work includes lots of activities such as raising money, donating blood and helping the old as well. 3. He went out under the rain for an hour, so he got high …………………. last night. 4. She has a large …………………………. of foreign stamps. 5. You should do morning exercise to ……………………….. your health. 6. ……………………. is one good kind of sports which help people to improve their health. 7. Running nose, coughing and sneezing are the …………………………….of cold. 8. In his ……………………, he often helps his mum cook meals for the poor and the homeless.