Energy Basics

Chemical changes and their accompanying changes in energy are important parts of our everyday world. The macronutrients in food (proteins, fats, and carbohydrates) undergo metabolic reactions that provide the energy to keep our bodies functioning. We burn a variety of fuels (gasoline, natural gas, coal) to produce energy for transportation, heating, and the generation of electricity. Industrial chemical reactions use enormous amounts of energy to produce raw materials (such as iron and aluminum). Energy is then used to manufacture those raw materials into useful products, such as cars, skyscrapers, and bridges.

Q. Which of the following best expresses the essential information in the bold sentence in paragraph 1? Incorrect choices change the meaning in important ways or leave out essential information.

Select the Correct Answer:
ll energy is used for transportation, heating, and electricity
We burn energy to produce a variety of fuels
Humans burn various fuels to produce energy
Heating, transportation, and the generation of electricity all require various forms of fuel


30 Reading Questions for TOEFL Prep - Group 2

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