Unit2
Page 16
Page 12
1 1 the number of wind turbines at the school 2 the amount (in dollars) the district has saved because of the little turbine 3 the year the wind power programme began 4 the amount (in dollars) the district could save a year from both turbines 5 the height of the turbines 6 the depth into the ground 7 the strength of wind they must be strong enough to survive 8 they can even produce energy ¡n winds of over ten kilometres per hour 9 the amount (¡n dollars) that Charles Goodman thinks he'll make from his three wind turbines
1 1 milk 2 sugar 3 supermarket 4 fresh 5 healthy 6 fruit 7 vegetables 8 fast 9 protein 2 1 renewable 4 alternative
2 deforestation 3 global 5 electricity 6 environmental
1 dining table 2 home-grown 3 tea bag 4 junk food 5 seafood 6 kitchen knife 7 beefburger 8 dishwasher Page 13 1 1 True
2 False
3 True 4 False
5 False
2 1 1 - 2 times a week 2 easy 3 very good 4 Yes, but it isn't always fresh. 5 Yes, but price is a factor. The customer isn't sure they would pay extra. 6 Yes 3 /e/ fresh, bread, eggs
/ae/ fat, gas, bag /i:/ meat, cheese, bean /ai/ pie, rice, fries /ei/ wave, grain, grape
21D
2A
3B 4D SC
3 A school in the town of Spirit Lake has built two wind turbines. It's a good location because the land is fíat and the wind blows across it a lot of the time. The project has been successful because the district has saved a lot of money and been able to employ three new teachers. The turbines provide enough energy for the school and there's also extra energy which they sell to a power companv. However, the wind turbines at the school don't only make money. They are also useful as a real-life model of the subjects the students are studying at school.
Page 14 1 1 many 2 little 3 much 4 enough 6 a little 7 enough 8 A lot of
5 Afew
2 1 has created 2 is won 3 has been 4 have made 5 has taken 6 has been 7 has decorated 8 has crossed 3 1 Have / been waiting 2 've / been reading 3 has been serving 4 has / been working 5 's been preparing 6 have been saying 4 1 've cleared 2 Have you ever been 3 Have you finished 4 've been studying 5 's eaten 6 's been coming 7 Have you been fighting 8 have you been staying 9 haven't seen 10 Have you heard
2 1 little
2 a few 3 a few 4 a few 5 a little 2 a few
3 a little
4 few 5 a few
3 1 has grown 2 have become 3 was 4 did 5 received 6 produced 7 started 8 began 9 has doubled 10 was 4 1 has been running 2 has been mending 3 has been painting 4 has been snowing 5 1 have been cooking, have prepared 2 has been, has lost 3 have been building, haven't finished 4 has been studying, has read
174
1 1 A large square of paper or plástic, a pencil, a long piece of wood and a pin. 2 Wind 3 In the garden next to plants and flowers. 2 1 Good morning, everyone. Let's start. 6 The most important thing is the paper or, if you want to put it outside, you'll need plástic. 11 The last stage ¡s to put the pin through the middle and fix the wheel to the wood. 3 ... how to make a pinwheel. They are fun for young children, 5 They are also quite easy to make. 13 So, did everyone follow that? 10 Then, bend each of the cut corners to the middle of the square.
Page 15 l i a little
Page 18
12 And now it's ready to test in the wind. 2 Today l'm going to explain ... 7 It needs to be a large square. 4 but they also look nice in your garden next to plants and flowers. 8 Another thing you'll need is a pencil. Draw two diagonal lines from córner to córner. You will also need a long piece of wood and a pin. 9 First of all, cut along the diagonal lines. 14 Are there any questions? 4 1 What's the 2 I see 3 It's a kind of 4 You serve it 5 Are you sure 6 Why don't we 7 Does it taste 8 It tastes