xét dấu hàm số sau: y= $\frac{1}{4}$ $x^{4}$ -$\frac{3}{2}$ $x^{2}$ +2$x^{}$ +1

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Exercise 5: Write sentences, using the words given 1. She/ often/ take/ paracetamol/ if/ she/ get / bad/ headache. __________________________________ 2. how many calories/ you/ bum/ do/ aerobics/ 2 hours? __________________________________ 3. getting/ enough/ sleep/ help/ students/ do/ their best/ the classroom. 4. Phong/ eat/ lots of/ junk food/ so/ he/ putting/ weight. _________________________________________________ 5. / exercise/ daily/ because/ I/ want/ stay/ healthy. _________________________________________________ 6. Sitting/ too/ close/ the TV/ hurt/ your eyes. ________________________________________________ Exercise 7: Read the passage and choose the correct answer Keeping tabs on your calorie intake is a great way to stay healthy and (1) __________ in shape. Calorie is a measurement of energy we get from eating food and it’s also a measurement of energy we use to do an activity. The number of calories you need daily (2) ________ depending on your age, gender, weight, height and lifestyle. There are various tools online which you can use to determine your recommended calorie intake. Remember to take note (3) ________ what you eat and drink (4) ________ you can adjust your diet. It’s also important to exercise regularly as it helps (5) _______ extra calorie. Besides having a balanced diet, it’s advised that you should eat more small meals instead of three big meals ones a day. 1. A. to be B. being C. to have been D. be 2. A. is varying B. varied C. varies D. will vary 3. A. for B. at C. of D. to 4. A. so B. as C. if D. or 5. A. take B. burn C. use D. run Exercise 8: Write the second sentence so that it has the same meaning to the first one. 1. Sue started to eat a low carb diet two years ago. → Sue has 2. Could you take me to the airport Friday morning? → Would you mind 3. How about going to the movies tonight? → Let’s 4. July stayed home from school yesterday because she had a high fever. → July had a high fever, 5. She eats fruits and veggies every day, but she keeps gaining weight. → Although 6. Mark’s gained 5 kilos since he quit smoking. → Mark’s put 7. Joana doesn’t eat much in order not to be overweight. → Joana doesn’t eat much because 8. It’s a good idea to do exercise regularly. → You ________________________________________________________________

Part 1: Rewrite each sentence beginning as shown, so that the meaning remains the same. Example: He wrote the letter in two hours. It took him two hours to write the letter. 1. The keepers feed the lions at 3 pm every day. The lions ................................................................................................................................ 2. We got lost because we didn't have a map. If we ........................................................................................................................................ 3. I would prefer you to deliver the sofa on Friday. I would rather......................................................................................................................... 4. The bridge was so low that the bus couldn't go under it. It was ....................................................................................................................................... 5. That was a silly thing to say. What ........................................................................................................................................ 6. We've run out of tea. There........................................................................................................................................ 7. I last saw him when I was a student. I haven't .................................................................................................................................. 8. Susan was too excited to sleep. Susan was ............................................................................................................................... 9. Robert has not had a job for two years. Robert has been ..................................................................................................................... 10. She will complete the work only she is paid extra. She will not ........................................................................................................................ Part 2 Use the words in the brackets to combine the following sentences. 1. All the students love the principal. He is very kind. (because of) ................................................................................................................................. 2. I have forgotten the tickets. I’m sorry for it. (having) ................................................................................................................................ 3. I saw it with my own eyes. I believed it. (if) ................................................................................................................................ 4. The house at the end of the street has been sold. It has been empty for years. (which) ............................................................................................................................. 5. It's a pity he doesn't take the doctor's advice. (wish) ............................................................................................................................