After years of research and testing, the hybrid car was developed and put on the market. It' s an interesting and exciting new improvement in today' s world as we look for better ways to protect the quality of the air we breathe and conserve our natural resources.

    The quality of our air is affected by many different things. But one of the largest sources of air pollution is the burning of fossil fuels such as coal and gasoline which is used to power a car' s engine. The EPA has set national standards to help control the level of harmful pollutants sent off into the air, and the automobile industry has acted by producing a hybrid car that uses less gas and therefore causes less pollution.

    A hybrid car is a combination of a regular car that runs on gasoline and an electric car that is battery powered. Some people tend to think that since the hybrid car is partially electric, you have to plug it in to charge it. But that's not how it works. The 144-volt battery pack is actually recharged through the energy that is produced when the car's brakes are used. This is referred to as “regenerative braking”, because it generates electricity.

    Although the hybrid car still runs on gasoline most of the time, this helps it use less gas than a regular car. When the driver stops at a traffic light, the engine automatically shuts off to save fuel. Then, as soon as the driver puts the car in gear and touches the gas pedal, the engine starts back up.

    Have you ever ridden in a car with someone who ran out of gas? That probably wouldn't happen if you were riding in a hybrid car. It flashes a warning on its computer screen that says, “I am low on gas”. When it completely runs out, the warning reads, “YOU ARE NOW OUT OF GAS!” Then the electric power supply kicks in to let the driver travel a few more miles to a gas station.

    Today, many people use plants from other places to design their yards. Well, do they have any influence on animals living nearby? As we know, plants supply food for things like insects and plant-eating animals. In turn, birds and meat-eating animals feed on these insects and plant-eating animals. It is easy to see how important plants are.

    Although foreign plants may look beautiful, they can cause problems when there are too many of them. I live in Virginia, USA, and sometimes see a plant—commonly known as Kudzu—that seems to cover everything in the area, even climbing over whole trees and houses.

    Kudzu is an unbelievable plant since it grows very fast. It was first brought to the United States from south-east Asia around the 1870's as a crop that farmers could grow. However, Kudzu quickly came to be considered harmful throughout the southern United States.

    Since Kudzu grows fast in many different environments, it can completely cover areas of land quickly. The plant is also not eaten by any insects or birds in the United States so it can grow unchecked. Kudzu can cover trees, bushes, and even houses. It costs the United States 500 million dollars a year to just keep Kudzu from growing too fast. The plant is a perfect example of what scientists call an invasive (侵略性的) species, which grows more quickly than other native plants.

    All foreign plants have the possibility to spread quickly. Not only are they costly, but planting them in gardens actually takes away food from insects. If everyone filled their garden with plants native to where they live, many lovely butterflies and other native creatures would be attracted to their backyards! So, take a look out of your window — how does your garden grow?

    There are so many expressions in American English that sound good but are not.

    "Face the music" is a good example. When someone says they have to face the music, it does not mean they are going to a musical show or concert. To face the music means to accept the bad results of an action.

    Imagine a friend asks you to take care of her beautiful red sports car. She gives you the keys and says, "Thanks so much for watching my car while I'm away. But please do not drive it. It is a very fast car and you are not on the insurance (保险)."

    But you do not listen. You want to show it to some friends and pretend(假装) the car is yours. So, you drive it around town one night. As bad luck would have it, you lose control of the car and drive it into a stop sign. The damage is serious. When your friend returns you must tell her what you have done and "face the music".

    The "music" here is the result of your actions. It could be losing her friendship or paying for repairs to her sports car or both. Whatever the music is, you must face it.

    There are other American expressions that mean the same as "face the music".

    To "take your medicine" means to accept the results from something bad you have done. And if someone says, "You made your bed. Now lie in it." He means you created a bad situation and now you will experience the results, or as we say in American spoken English, you must deal with it!

    "Pay the piper" also means the same as "face the music". But, that expression has its own very interesting beginning. We will talk about that in the next Words and Their Stories.

    The World Happiness Report, a United Nations agency report, measures (估量) how happy people are, and why. Norway is the happiest place on earth—beating neighbour Denmark from the number one position.

    Denmark, Iceland, Switzerland and Finland are among the top five, while the Central African Republic came last. Western Europe and North America took up most of the places at the top of table, with the US and UK at 14th and 19th respectively.

    The World Happiness Report mainly depends on asking a simple question of more than 1,000 people every year in more than 150 countries. “Imagine a ladder, with steps numbered from 0 at the bottom to 10 at the top,” the question asks. “The top of the ladder is the best possible life for you and the bottom of the ladder is the worst possible life for you. On which step of the ladder would you say you personally feel you stand at this time?”

    The average (平均的) result is the country's score—from Norway's 7.54 to the central African Republic's 2.69. But the report also tries to explain why one country is happier than another. It looks at reasons including economic strength, social support, freedom of choice, and generosity.

    This year's report also has a text titled “restoring (恢复) American happiness”, which examines why happiness levels in the United States are falling, despite continually-increasing economic improvement. “The United States can and should raise happiness by solving American's social problems—rising inequality and distrust—rather than focusing mainly on economic growth,” the authors said.

    Jeffrey Sachs, the director of the Sustainable Development Solutions Network, which published the report, said President Donald Trump's policies were likely to make things worse.

Keeping Safe in your House During a Fire

    Though you may not think you'll ever fall victim to a house fire, it's better to be prepared to avoid panicking. To increase your chances of survival, just follow these steps.

    ⒈React as soon as you hear your smoke alarm goes off. On hearing your smoke detector or alarm going off and seeing a fire, exit your home as safely as possible. {#blank#}1{#/blank#}

    ⒉Safely exit through doors. If you don't see smoke at the door, open it slowly and pass through it after making sure the door feels cool. If there is a fire preventing you from exiting the room, close the door.

    ⒊Protect yourself from smoke inhalation（吸入）. Get low to the floor and crouch or crawl on your hands and knees to avoid the smoke. {#blank#}2{#/blank#} Cover your nose and mouth if you have to walk by or through a heavily smoke-filled room.

    ⒋{#blank#}3{#/blank#} If your clothes catch fire, immediately stop what you're doing, drop flat to the ground, and roll around until you put the fire out.

    ⒌Prevent the smoke if you can't get out. {#blank#}4{#/blank#} Close your door and cover all vents（通风口）and cracks（缝隙）around it with cloth or tape to keep the smoke out.

    ⒍Call for help from a second story window.{#blank#}5{#/blank#} You can take a sheet or something else—white preferably—and hang it out of the window to signify that you need help when the first res-ponders get there.

A. If you can't escape your home, don't panic.

B. Stop, drop, and roll if your clothes catch fire.

C. You are probably a lot safer by closing doors.

D. Escape from a second story window if you can.

E. Smoke inhalation causes people to become unconscious.

F. Do not try to get your phone, valuables, or your other important possessions.

G. If you are trapped in your second story room, get to an area where people can find you.

    What do you think of your Chinese? If you think your Chinese is good enough, you can take part in the competition named Chinese Characters Dictation Competition(中国汉字听写大会).

    Today teenagers are using more and more smart phones. They spend too much time in shopping, chatting, playing games and so on. Many of them cannot using smart phones to help with their study. Overuse of smart phones will make students too lazy to think and write. Some of them even forget how to write Chinese characters by hand. Teachers and parents are very worried about it.

    In order to draw people's attention to the problems above, in 2013 CCTV held the first Chinese Characters Dictation Competition. About 200 students from 32 teams took part in it. They stood on the stage to write down Chinese characters by dictation. Lu Jialei, a 14-year-old girl from Zhejiang, got first place.

    Since then, the competition has been popular among teenagers. Many people are interested in this kind of competition, too. They like to write down the characters while the competitors(参赛者)are writing them.

    Can you be the next winner?