Modern inventions, such as trains and lights, make our everyday lives easier, _______ many of these inventions cause troubles also. One thing is they use up natural resources (资源). Cars burn gas to get us where we want to go. This pollutes (污染) the air. Electric heat and light make our homes _______, but they also burn up coal and oil. We need factories, but factory waste pollutes our waterways. It seems terrible, right? However, experts (专家) believe that _______ the way we live may be good for our planet's health in the future. We can use cleaner energy and less chemicals as we build the towns of tomorrow. Here are some ideas and predictions (猜测) that will probably _______ our planet a cleaner place to live in.

More and more people will be working in their _______ using computers and satellite receivers, without going outside.

Today, more electric trains are being built, and new hydrogen-power (氢动力) and electric cars are being developed. In the future, most cars will probably use this. Shopping and entertainment may be as close as a ride _______ an Earth-friendly bicycle.

We will grow _______, grains, and vegetables close to our home, either in our gardens or on nearby organic (有机的) farms. The farms _______ use chemicals (化学物质) to control pests. Instead, different kinds of insects will stop harmful bugs. That will help keep chemicals out of our food.

Energy from windmills (风车) and solar panels (太阳能电池板) is available now to some homeowners. In the future, every home will probably use this kind of energy. Rooftop (屋顶) solar panels will help make hydrogen (氢) from _______. Our appliances (电器) will run on this gas. At ________, hydrogen will be turned into electricity or light.

How would you feel if a stranger bought you something to eat or drink? Would you like to buy another stranger some food or drinks?

Do you know what "paying it forward" means? It's not paying for something before you buy it. "Paying it forward" is to do something nice for another person for no reason. Then that person does something nice for someone else.

You might think that this doesn't seem like much. But this kind act can spread (传播) really fast. In December 2015, a woman was buying a meal at McDonald's in Florida, US. She also bought a meal for the person standing in line behind her.   Well, that person did the same thing, and the next person did too. Soon, 250 people had bought meals for another person!

But you don't need to spend money to pay it forward. There are examples of paying it forward every day like volunteering (做义工), giving food to the homeless or doing something extra nice for someone around you.

Try it out for yourself. All you have to do is look for little things you could do to make a person's day. Then, ask them to spread the word and do three kind things for someone else. And when someone does something nice for you, don't forget to do the same!

Every year on April 22, the world celebrates Earth Day. It's a day to help people to remember to protect our planet. This year, Earth Day is falling during the COVID-19 pandemic.

The focus (焦点) of this year's Earth Day is climate change. You might ask: how can climate change be bad for our health? Many studies show that the rise of temperatures will lead to more bad weather and natural disasters, such as heat waves (酷热), floods and droughts (干旱). All of these can be bad for us in different ways. Let's take a look.

Many diseases are spread by mosquitoes（蚊子). Climate change will lead to higher temperatures and more rain. It means there will be more mosquitoes. This will increase the spread of diseases like malaria (疟疾). At the same time, when temperatures rise, insects like mosquitoes and fleas might fly from the equator (赤道) to the north. They carry diseases and the diseases might move into new places, such as Europe.

People are cutting down many trees around the world. That not only causes climate change, but also causes epidemics (流行病). For example, in Central and West Africa, lots of bats are losing their homes. They have to live in places closer to humans. Because bats carry many viruses like Ebola, they increase the risk of Ebola and other virus outbreaks.

Heat waves can make people sick. They can cause dizziness (头晕), headaches or even heatstroke (中暑). Children and old people are affected more easily. Around the world, many people don't have air conditioners. They have a higher risk of dying from heat. In India, for example, heat waves killed 1,300 people in 2010, 1,500 in 2013 and                                 2,500 in 2015.

Climate change also means more bad weather. Floods and typhoons can hurt people or make people die. Droughts can make people not have enough food to eat.

Climate change happens because we use too much energy, like burning coal, oil, and gas. We should take action to save energy. Here are what we can do.

Turn off computers and TVs when you aren't using them.

Take a walk, ride a bike or take public transportation as much as you can.

Save water and don't waste food.

Buy things that use clean energy, such as wind and solar energy (太阳能).

Holiday Brochure (手册)

Are you between 12 and 16 years old? Are you looking for the perfect holiday? Would you like fun, new friends and a new adventure? We have the answer!

And all you need is a bike! You will join a group of up to 12 teenagers and one or two leaders. You'll see mountains, the sea, pretty country villages and lakes. You'll cycle (骑行) about 20 km on most days, but don't worry-you don't need to cycle up any mountains and you can go quite slowly if you need to. On the days when you don't cycle, you can have a go at some different sports, like swimming and caving, and you'll move to a different hotel most nights. At the end of your holiday, you'll find you are fitter, more energetic and have more friends! It is really the perfect holiday.

Places are limited, so book your place now. Phone 005-68674758 or visit our website: www.Paradisecycling.cn.

We have been the leaders in short exchange holidays between Chinese and American schoolchildren since 1995. Cultural Exchange Holidays offers programmes in more cities than ever before-New York, Washington DC Houston, Dallas, San Francisco, Chicago and New Orleans. In addition to English classes, you go to a real American school with children of your age, and live with an American family. In return, an American school girl or boy lives with your family and goes to your school. Weekends are spent with the American family, but on Sundays, cultural visits are also offered to places of interest and on these visits you will meet other exchange students. Our group leaders are fully qualified and experienced (有经验的) tour guides. You can even enter our competition and win a free Cultural Exchange Holiday!

Want to know more? Fancy (想要) winning a free trip? Contact us at: www.culturalexchangehol.cn.

74. 学校英语俱乐部将要举办"Me in 2040"的演讲比赛。假如你叫李华，想要写一篇演讲稿参赛。