Soluzioni Unit 9

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Soluzioni degli esercizi del libro

Unit

₉

Text and dialogue – page 97

1. Various metals and their use in dentistry - 2. What the teacher was saying - 3. Dave - 4. Yes, they are - 5. In order to im- prove the properties of pure metals - 6. Gold is always mixed with silver, platinum, palladium and other metals too; silver is usually added to gold and tin is not mixed with any other metal - 7. It’s the only liquid metal - 8. At 39° below zero - 9. When it’s used to make impression trays

Practice – pages 104 and 105

Exercise 1 1. The prostheses are built by technicians - 2. Some metals are mixed by him - 3. Cars are repaired by me- chanics - 4. Her teeth are brushed by her - 5. Metals are melted by heat - 6. A new lesson is explained by the teacher - 7. A pizza is eaten by Mary - 8. The guitar is played by John - 9. The kitchen is cleaned by Tom Exercise 2 1. Some letters were written by us - 2. A lie was told by Paul - 3. The teacher was listened to by the stu-

dents - 4. The prize was won by the football team - 5. The first smartphone was commercialized in the 1990s - 6. Mary was invited by Jack to his birthday party - 7. My apologies were accepted by him - 8. The books were returned to the school by the students - 9. An e-mail was sent to the teacher by her - 10. People were not allowed by us to smoke in here

Exercise 3 1. This car is produced / was produced in Italy - 2. Stories are told / were told by her mother - 3. Skateboards are ridden / were ridden by children - 4. A prize is won / was won by the team - 5. A model is built / was built by Grant - 6. In Germany are not grown / were not grown many grapes - 7. The book is taken / was taken by the teacher - 8. Where is the test written? / Where was the test written?

Exercise 4 1. not any / no - 2. not any / no - 3. no - 4. any - 5. any - 6. no - 7. any

Exercise 5 1. none - 2. anybody / anyone - 3. nobody / no one - 4. everybody / everyone - 5. nobody / no one - 6. anybody / anyone - 7. something - 8. nothing - 9. anybody / anyone - 10. anything - 11. anything - 12.

anything

Exercise 6 1. said / anybody /anyone - 2. told / nobody - 3. said / anyone - 4. any / say - 5. told - 6. any / tells - 7. told / some - 8. tell / any - 9. didn’t - 10. nothing

Exercise 7 Dialogue - Paul: Why don’t we repeat some of the things we learned in class yesterday? - Lucy: Good idea.

I want to talk about dental alloys. Dental alloys are made of metals and they . are used to improve the cha- racteristics of pure metals. - Paul: Right. In the dental field, for example, gold is often used with some other metals such as platinum, palladium and others. - Lucy: Alloys are generally classified according to the specific need of the patients. - Paul: What is the first step? - Lucy: The first step is melting, which is usually performed using wax casting. - Paul: But there are also innovative techniques, such as cad cam, laser sintering which are gradually replacing the traditional methods.

Exercise 8 1. Mary bought some books yesterday - 2. I have enough, be silent now! - 3. Caries are treated by dentists - 4.

When was your brother born? - 5. Grant wants some coffee - 6. There isn’t any bread on the table - 7. Can you see any books on that desk? - 8. Some of them is working

FROM THE MOVIE WORLD – page 107

1. Blue: she was cast - was praised - 2. Red: everyone - 3. Green: said - 4. “The Hunger Games” - 5. It was the one as Ka- tniss Everdeen, the heroine in “The Hunger Games” - 6. Stunt and combat training, archery, rock and tree climbing, running, parkour, pilates and yoga - 7. Yes, it was - 8. Yes, she did - 9. It defined her the ideal screen actress