Vocabulary A Complete the sentences with the correct word.

• undertake • outweigh • release • fluctuate • integrate • eliminate • utilise • generate • detect • store

1 Wind power is good, but to run our business we need a reliable energy source that doesn’t …………..……… .

2 If we can store enough energy, we can …………..……… the need to stay connected to the power grid.

3 The environmental costs of using fossil fuels …………..……… the benefits.

4 It’s important that we …………..……… STEM learning into our school curriculum.

5 You can store energy in chemical batteries and …………..……… it when you want to use it.

6 Nowadays, there is a variety of ways to …………..……… electricity, from solar and wind power to wave power.

7 You will sound more knowledgeable if you …………..……… more statistics in your presentation.

8 Advances in STEM technology have allowed doctors to …………..……… and treat genetic disorders.

9 We're required to …………..……… some field work as part of the course.

10 Flow batteries will allow us to …………..……… plenty of energy for later use.

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1 It was 12.45 p.m. on 2 January, 2007 when 50-year-old Wesley Autrey was waiting for the train at a subway station in New York.

2 Suddenly, 20-year-old Cameron Hollopeter fell onto the track between the two rails.

3 Mr. Autrey jumped and lay on top of Mr. Hollopeter and kept him down on the ground.

4 Five carriages travelled over the two men before the train stopped.

5 People on the platform were amazed at Autrey’s courage.

6 Subway workers helped the two men out.

7 An ambulance took Mr. Hollopeter to hospital but he had no serious injuries

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Type 0 Conditional

If the sun rises high, it becomes very hot.

Plants die, if it does not rain.

People get fat, if they eat junk food.

If a person practises sports, he or she always feels good

Type 1 Conditional

If you cook the supper, I will wash the dishes.

She will pass the test, if she studies hard.

If it is sunny, we will go yo the park.

Paula will be sad, if Juan leaves.

Type 2 Conditional

If I had a million dollars, I would buy a big house.

If dogs had wings, they would be able to fly.

If I were you, I would drive more carefully in the rain.

Paula would be sad if Juan left.