Trắc nghiệm Tiếng Anh 7 Unit 10 (Smart World có đáp án): Reading and Writing

Energy for the Future

    In the past, people used firewood and coal to cook food and heat their homes. These sources of energy were cheap but created a lot of smoke and pollution. Today, many countries are trying to reduce pollution and use cleaner energy.

    Renewable energy sources, like solar and wind power, are becoming more popular. Solar energy comes from the sun, and wind power comes from the wind. They do not pollute the air and will not run out. However, they depend on the weather. On rainy or cloudy days, solar panels cannot make electricity. Wind turbines also need strong winds to work well.

    Using renewable energy is more expensive than fossil fuels at first, but in the long run, it helps protect the environment and reduce health problems caused by pollution.

Energy for the Future

    In the past, people used firewood and coal to cook food and heat their homes. These sources of energy were cheap but created a lot of smoke and pollution. Today, many countries are trying to reduce pollution and use cleaner energy.

    Renewable energy sources, like solar and wind power, are becoming more popular. Solar energy comes from the sun, and wind power comes from the wind. They do not pollute the air and will not run out. However, they depend on the weather. On rainy or cloudy days, solar panels cannot make electricity. Wind turbines also need strong winds to work well.

    Using renewable energy is more expensive than fossil fuels at first, but in the long run, it helps protect the environment and reduce health problems caused by pollution.

Energy for the Future

    In the past, people used firewood and coal to cook food and heat their homes. These sources of energy were cheap but created a lot of smoke and pollution. Today, many countries are trying to reduce pollution and use cleaner energy.

    Renewable energy sources, like solar and wind power, are becoming more popular. Solar energy comes from the sun, and wind power comes from the wind. They do not pollute the air and will not run out. However, they depend on the weather. On rainy or cloudy days, solar panels cannot make electricity. Wind turbines also need strong winds to work well.

    Using renewable energy is more expensive than fossil fuels at first, but in the long run, it helps protect the environment and reduce health problems caused by pollution.

Energy for the Future

    In the past, people used firewood and coal to cook food and heat their homes. These sources of energy were cheap but created a lot of smoke and pollution. Today, many countries are trying to reduce pollution and use cleaner energy.

    Renewable energy sources, like solar and wind power, are becoming more popular. Solar energy comes from the sun, and wind power comes from the wind. They do not pollute the air and will not run out. However, they depend on the weather. On rainy or cloudy days, solar panels cannot make electricity. Wind turbines also need strong winds to work well.

    Using renewable energy is more expensive than fossil fuels at first, but in the long run, it helps protect the environment and reduce health problems caused by pollution.

Energy for the Future

    In the past, people used firewood and coal to cook food and heat their homes. These sources of energy were cheap but created a lot of smoke and pollution. Today, many countries are trying to reduce pollution and use cleaner energy.

    Renewable energy sources, like solar and wind power, are becoming more popular. Solar energy comes from the sun, and wind power comes from the wind. They do not pollute the air and will not run out. However, they depend on the weather. On rainy or cloudy days, solar panels cannot make electricity. Wind turbines also need strong winds to work well.

    Using renewable energy is more expensive than fossil fuels at first, but in the long run, it helps protect the environment and reduce health problems caused by pollution.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.

A Future with Clean Energy

    Many experts say that the future of energy must focus on renewable sources. In a typical city, people use electricity for homes, offices, and transportation. If this electricity comes from coal or natural gas, it causes air pollution and health problems. Instead, cities plan to build more solar panels and wind turbines to ______ (6) clean electricity.

    However, renewable energy can be ______ (7) at first because building solar farms or wind farms requires high investment. Governments may offer subsidies or incentives to help companies and households afford the initial cost. Over time, the cost of renewable energy ______ (8) as technology improves and production increases.

    In addition, energy storage is important: batteries and other systems can store extra electricity when production is high, and then ______ (9) it when demand increases. Finally, education and public awareness ______ (10) a key role: people need to learn how to save energy and choose clean options.