World Earth Day is on April 22. It's a day when people around the world work to help the planet, including kids. Here are what four kids have done for the planet.

    Speaking Out

    Jaysa Hunter-Mellers, 14, spoke at the City Hall to ask leaders to shut the last coal power station nearby which brought her an asthma (哮喘)attack. She didn't think that people would listen to her, a kid. But the coal power station later said it would close. Jaysa learned to speak to her local government at a young age and now she wants to teach others to speak up too.

    Helping Butterflies

    When Aiden Wang was 6, he learned that local butterflies were in trouble because they needed a kind of grass, milkweed, to survive. But milkweed was disappearing. So Aiden started growing milkweed in his house, on which the butterflies lay eggs. Aiden is now 13 and he cares for eggs and lets them go when they turn into butterflies.

    Doing Good for Gorillas

    When Addy Barrett was in the first grade, she learnt that the mountain gorillas were in danger. She wanted to protect them and set up a program called Gorilla Heroes. So far, Gorilla Heroes has raised more than $11, 000 to help mountain gorillas. Addy says, "The feeling of having a fine effect on the world is like no other. It feels so good to know that I am making a difference. "

    Educating the Youth

    In the fourth grade, Jeremy Clark and Charlie Abrams saw a picture of the Statue of Liberty (自由女神像) up to her waist in water. It was meant to show what the statue would look like if all the ice in the world is turned into water. In 2019, they started a team called Affected Generation to urge young people to become climate activists. The two also want schools to teach about climate change.

    "What's your 'Thing of the Day'?"I asked my fourteen-year-old son as he got a piece of potato onto his plate. This is a question our four kids and whichever friends are staying for supper expect to be asked each evening at suppertime. Usually, it's followed with, "Uhh……Umm…We had pizza for lunch. "And then I have to refuse the response and ask for something meaningful-either something he learned or something that happened with his friends.

    But, this day, my son surprised me as he went into great detail about how he had been honestly wronged by a couple of classmates and laughed at in front of the class. I asked more questions and learned that the teachers were aware of the situation. The issue had been dealt with as much as the teachers and staff were able to. It was really just a matter of kids being mean and deciding to play a trick on someone.

    I thought about the situation all night. I vacillated between meeting the teachers, meeting the parents of the classmates, and not doing anything since the story had been told to me in a matter-of-fact way-not overly excitedly.

    I waited until the next day after school. On the car ride home, I questioned my son what about today after yesterday's situation. My son was surprised that I brought it up again. "What?No, it's over, Mom. They're my friends. They were just being stupid. They apologized. Forgive and forget, you know?We're all good. "

    I was worried that perhaps he was trying to hide his concern or sadness about the thing. But as I watched him over the next days and weeks, everything seemed "normal". Wouldn't it be great if everyone could live the "forgive and forget" way of life?

    Churchill, Manitoba is a small town. The northern winds roll through it from Canada's Hudson Bay. It might be just another point on the map if not for its seasonal settlers.

    It happens like clockwork every fall that hundreds of polar bears make their way through the town to the freezing bay where they hunt for seals after the ice packs enough to support their weight. The animals have been connected with Churchill since at least 1619. That's when Norwegian explorer Jens Munk and his sailors recorded making a meal of one bear while they wintered in the area. "It was of good taste and did not disagree with us. "That's what Munk wrote in his journal.

Over the years, the animals' coming has earned the town the name of" Polar Bear Capital of the World. "Today, Churchill's bear population goes beyond its human population. There used to be about 7, 000 residents but now only 813 living there. There was no such thing as an organized tour group to see the bears until 1980. The town might have been in terrible financial hardships. But the growing bear tourism industry helped.

    Today, some 10, 000 tourists come to the town to see polar bears for six weeks in autumn every year. But the reasons why they come are different from before. Everyone was happier and they had such a good time seeing polar bears. Now things have changed because the word is out that this Western Hudson Bay population of bears, Churchill Bears, are going to be the first population of polar bears to die out. So when the tourists come up, they all have a little bit of a lump in their throats (如鲠在喉) because they're looking at a beautiful bear, but they're also looking at a dying-out bear, which makes the whole attitude toward the bears different. Unfortunately, that's becoming the major part of the whole attraction of the tours as well. Come and see the bears before it's too late.

    Earlier research had suggested we're best at learning grammar in early childhood. Then we hit a dead end around age 5. It's supposed to be much harder for older kids. The time when people can learn the rules and structure of a language well appears to last until around age 17 or 18. "But that's not so, "says psychologist (心理学家)Joshua Hartshorne.

    Hartshorne asked friends to take an online English grammar test. After completing the test, volunteers answered questions about where they had lived, the languages they had spoken from birth and the age at which they first started learning English. Hartshorne also asked how long they had lived in an English-speaking country. As he had hoped, people shared the test widely online. This let Hartshorne's group study the answers from 669, 498 native and non-native speakers of English. The researchers used statistics to find out when people with different English-speaking experiences reached their top grammar ability.

    If people moved to a new country and began speaking English by age 10 to 12, they finally spoke it as well as folks who had learned both English and another language from birth. But both groups scored a little worse than people who spoke English only, the researchers found. The test results showed that around age 17, people's ability to learn grammar took a sharp drop. And those who started learning English after age 10 or 12 never reached the same level of English skillfulness as people who started younger. Why?The researchers think it's because they had fewer years to practice before their skills dropped off at surprise：Language learning did not end at 17. People's English skills kept improving a little until around age 30, the new study found. And this was true among both native speakers and those who learned English as a second language. Still, most language learning happened by age 20, the new study decided.

    Can a bowl of chicken soup help fight a cold? Maybe. But will going outside with wet hair make you sick? No. Here are some more.

    Feed a cold, starve a fever. Being sick often makes you eat less. But force-feeding won't help. What will help is drinking more water and getting enough calories. A 2008 study found that mice having flu took longer to recover and were more likely to suffer ill effects if they were dieting.

    Vicks VapoRub(薄荷膏) in your socks treats coughs. A widely spread post on line once suggested putting Vicks VapoRub on feet at night and covering them with socks to treat coughs. VapoRub is usually used on a child's chest or throat to reduce cough. So it would not work in your socks. Still, some fans stand by this treatment.

    Colds and flu are caused by viruses. They do spread during cold-weather seasons, but you're more likely to pick them up inside than out. In fact, going outside and getting more physical activities-and not just during cold and flu season-may help prevent sickness.

    A wet head can make you sick. You'll probably feel cold if you don't blow your hair dry on a cold day, but not much else will happen. Unless you are so cold that you get a low temperature, which could make you sensitive to flu, wet hair or clothes won't increase your possibility of catching a cold.

A. It became an internet popularity.

B. You'll get sick if going out without a coat.

C. Again, colds are caused by a virus.

D. That's just an incorrect traditional belief in cold.

E. But you have to actually wear it for the health benefits.

F. Experts suggest adding medicines three times a day to your meal.

G. The researchers' suggestion is to stop dieting until after flu season.

    Losing parents is every kid's nightmare (噩梦). 1, six-year-old Jaden has experienced it twice. First he 2 his dad when he was four and then last month his 3 died unexpectedly in her sleep.

    "I tried to get her 4 but I couldn't," said Jaden. He was understandably 5. But he intended to turn sadness into 6. A few weeks ago, his thoughts were first made 7 when he told his aunt, Barbara, that he was sick and tired of seeing everyone sad all the time. And he wanted to be stronger and had a plan to 8 the situation.

    "That was the beginning of it. In other words, that was where the adventure 9," said Barbara. Jaden asked his aunt Barbara to buy some 10 and bring him to downtown Savannah, Georgia, near where he lived, so he could 11 all the things. He was just trying to make people 12. And he would 13some people who weren't smiling to give his things to and then make them happy all day.

    Jaden has been to four nearby 14 downtown and he is brave to meet different persons15sometimes he doesn't get exactly the 16 he is hoping for.

    It is just so 17 to some people. They can't believe a six-year-old boy should give away toys, expecting nothing in 18 except a smile.

    "I 19 to give away 100 toys," said Jaden. When asked if he thought he could reach that 20, he answered, "I think I can."

    The Sensorwake, (appear) at the Consumer Electronics Show in Las Vegas, takes a completely different way to get (you) attention when it's time to wake up. Instead of using sound to wake you up, the clock uses smells. It works with reusable smell capsules(胶囊) (add) into a narrow opening along the top edge of the clock.

    19-year-old Guillaume Rolland, an engineering student from France, (successful) raised $200, 000 last year to invent the Sensorwake. , do scents(气味) work as well as a regular audio alarm in terms of waking you up?While we might hate the sound of conventional alarms, they seem to be (use) to most regular sleepers. Rolland claims that the Sensorwake is just as good as the audio alarm, with testing showing his scent-based alarm (clock) wake 99 percent of people in 2 minutes.

    At same time, the Sensorwake comes with an insurance policy for any sleepers who can't (wake) up by its primary feature. For extra-heavy sleepers, there is a backup audio alarm will start to go off if the smell doesn't make you wake up within 3 minutes.

增加：在缺词处加一个漏字符号（∧）, 并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线, 并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；

2．只允许修改10处, 多者（从第11处起）不计分。

    Since last year, the heavily smog has occurred in our city. The smog, that has made our daily life inconvenient, has also done great harm people's health. Many traffic accident have happened because of the bad weather. Besides, many people have to stay inside to avoid the harm air. What's the worse, many people have suffered from bad coughs, sore throats but other serious diseases.

    Personally, I thought we should make efforts to protect the environment. I strongly agree with the idea what we can try to drive less and buy green products. Only when we have the awareness (意识) of environmental protection can us have cleaner air.

1）表示欢迎；

2）早餐的种类；

3）快捷的早餐受欢迎的原因。

注意：1）词数100左右；

2）可以适当增加细节, 以使行文连贯