Here are five best things that will help keep your pearly teeth shiny.
Apples
Though apples technically have sugar, they’re not quite in the same type as a candy. Apples are high in fiber(纤维) and water, which are both key parts in removing food remains from your teeth. The biggest advantage, however, is the quality of the apple, and the fact that you have to bite so much to break it down enough to eat. And that act of biting produces saliva(唾液) that can help to protect your teeth from sugar and other harmful things that often cause tooth problems.
Cheese
Cheese, along with other milk products have bacterium that have been found to raise the PH levels inside your mouth, and in turn, lowering their risk of tooth problems. Cheese also has calcium (钙)and protein that help strengthen teeth.
Leafy Greens
It’s true that leafy greens like cabbages and many more will likely find their way on any lists of healthy foods. This is because they are full of healthy vitamins and minerals while being low in calories. Specifically for teeth, however, these green vegetables are high in calcium to help build good enamel(釉质).
Almonds （杏仁）
Almonds are fantastic for your teeth because they contain calcium, protein, and like the leafy greens, they are also low in sugar. They also require quite a bit of biting to break down, adding to the production of that all-important saliva.
Water
Water contains fluoride（氟化物）that is a mineral which has been known because of its teeth strengthening powers. And when there is plenty of fluoride in your drinking water, it can do a wonderful job like that.
So if you want to own healthy and shiny teeth, keep having them often.
Five | |
Apples | Fiber and water in the apples are the |
Cheese | The |
Leafy Greens | |
Almonds | Almonds are |
Water | If there is plenty of fluoride in your drinking water, it can strengthen your teeth |
Conclusion | |
相似题推荐
Humans share Earth with many different kinds of wildlife.
However, many of our animal friends may not be around for much longer. According to the Living Planet Report released by the World Wildlife Fund (WWF) in October, there has been 60 percent in the populations of animals including mammals, birds, and fish since 1970.
“If there was a 60 percent decline (下降) in the human population, that would be equivalent (等于) to emptying North America, South Amcrica, Africa, Europe, China, and Oceania.” Mike Barrelt, director of science at WWF, told the Guardian.
According to the report, one of the biggest causes of wildlife losses is human activity. Three-quarters of the world’s land is largely influenced by human activity. Many natural habitats (栖息地) have been destroyed to create farmland.
About 300 kinds of mammals are dying out because we eat them. Another example is the industrial overfishing of the oceans, the Guardian noted.
These developments lead scientists to believe that there could be a sixth mass extinction (大灭绝), the first to be caused by humans, according to the Guardian. There have been five mass extinctions before, the last being 65 million years ago. That time it was the dinosaurs that died out.
WWF has called on world governments and businesses to make a deal to protect people and nature. According to a report by China Daily in November, Chinese paddle-fish in the Yangtze River, may have become extinct. And there are now less than 500 green peafowls (孔雀) in the wild, reported CCTV in June.
To protect endangered animals, China has stopped the use of rhino horn (犀牛角) and tiger bones, and ivory trade, reported China Daily. It also increases public attention by holding activities when celebrating the World Wildlife Day.
But more efforts are still needed to protect wildlife in China and around the world. “We are the first generation to know we are destroying our planet and the last one that can do anything about it,” WWF UK Chief Executive Tanya Steele told CNN.
Human activity makes animals face uncertain future | ||
| The | The animal population | |
| The details for wildlife losses | Human activity has Some kinds of mammals eaten by humans are dying out. Humans could cause the next mass extinction. | |
| The protection for endangered animals | governments | Governments China not only has stopped using the animal products but also held activities to increase public attention. |
| people | We should not We should help the change the situation. | |
It is important that you make yourself excited to make your memory more active. You can do this by doing some new activities and by changing your daily habits. Learning a new skill helps your brain (大脑) to develop. When trying to remember something, you should pay special attention to the most important things about it. Do not allow other thoughts to enter your mind because this will reduce your chances of making right memories.
An excellent way to help memory is to connect information with pictures. Try to see the pictures in your mind. Taking notes and keeping a diary will also be of great help.
Healthy food and plenty of vitamins are necessary for your memory to work well. Drinking a lot of water also helps keep your memory. You must allow your brain to have enough sleep and rest. When you are asleep, your brain stores memory. Not enough sleep can cause problems with storing information. And being tired will also stop you from being able to think clearly and well.
In order to keep your mind on your work, you must be free from worry. Generally keeping fit and normal health checks are both important as well—not just for improving your memory.
Title | How to Improve Your |
| Main | Looking |
Making yourself | |
Paying attention to the most important things, in order to add to your chances to make | |
Connecting | |
Taking notes and keeping a diary will be very | |
Other ways | Eating healthy food and taking plenty of vitamins |
Having enough sleep and rest. You |
【推荐3】Wang Yue, a grade-seven student from Jiangsu, opened a study app to see how to solve a difficult math problem. However, a lot of game advertisements popped up(突然出现), which made her very angry.
In fact, that is just one of several disappointing things about study apps that are widely used by students. Study apps aim to help students learn. For example, students can check answers to problems and take online courses(课程). However, with more study apps coming into the market, serious competition has caused some apps to change. Making good use of them has become a problem.
Some study apps have social media features(社交媒体功能) that can disturb students. Li Xieyi, 14, from Sichuan, has noticed this. “I once joined a chat group to learn from others. However, hundreds of messages appeared on my phone,” she said. So, she left the chat group. “If you don’t have self-control, just pay attention to studying, don’t use study apps,” she said.
In addition, some students simply copy answers from study apps. Zhang Shiyuan, 14, from Shanghai, often sees her classmates do so. But she has a better way to use study apps. “They show many ways to solve one problem. I try them one by one and see how they work. Then I use the things I’ve learned to solve the problem again,” she said.
1. Why was Wang Yue very angry?2. What has caused some apps to change?
3. Where is Li Xieyi from?
4. Why did Li Xieyi leave the chat group?
5. What does Zhang Shiyuan often see her classmates do?
This summer, Zhengzhou was hit hard by the floods (洪灾). Some people lost their lives. A lot more lost their homes. In the face of such a difficult time, many Chinese people reached out their hands and helped the people in Zhengzhou to get through it together. Among these helpers, Erke caught many people’s eyes. Although the company was running at a huge loss, it still gave 50,000,000 yuan to help Zhengzhou. As the saying goes, kindness will be paid back. Erke won many Chinese buyers’ trust and respect this year. Thousands of Chinese buyers showed their thanks to Erke by buying its products (产品).
There is nothing wrong to support the company you love by spending money on it. However, some buyers went too far. The news reported that a man ran away quickly after shopping in an Erke store. Many people thought he ran because he didn’t pay. In fact, he paid 1,000 yuan for the clothes that cost only 500 yuan, and he didn’t want to get back the rest of the money. Many other buyers bought things crazily without thinking about their real needs. One buyer bought 20 pairs of the same kind shoes, none of which was his size, just to show his support for Erke. Some people even complained about the price, “Only 169 yuan for a pair of shoes? Erke should sell its shoes for least 699 yuan each pair.”
In fact, this kind of impulsive and wild shopping can do little to help a company grow into a lifelong popular brand. That is why Mr. Wu, the boss of Erke, has asked people again and again to shop rationally (合理地).
1. How much money did Erke give to help Zhengzhou according to the passage?2. Do more people like to buy products from Erke after it helped Zhengzhou?
3. What can Mr. Wu say to ask Chinese buyers to shop rationally?
4. Where do you want to shop now, in an Erke store or a Nike store? And why?
The students’ life today can be very stressful (紧张的). They are under pressure (压力) every day. They need a (1)breakfrom it. Parents should ask children to do something else. But not let them relax in front of the TV. A hobby is the perfect answer.
There are many different kinds of hobbies. Chess is a good example. It is a very enjoyable game and it also helps children develop their thinking skills.
Collecting something is also a good hobby for children. A child can collect almost anything:
key rings, stamps, postcards, old coins, etc. Many of these collecting can be both interesting and fun. They teach children a lot and broaden (开阔)their knowledge. For example, gardening (园艺) is a useful hobby because it is a physical activity and it also teaches children about nature.
(2) 1 . Children may become experts in something if they really love their hobbies. Children will also learn to become more organized and make places, for example in collecting something. Hobbies will also teach children a lot about responsibility(责任).
1. 用一个适当的词替换（1）处划线的词。2. 在短文中找出可以替换下面所给句子的一句话。
It is a good hobby for children to collect something.
3. How many kinds of hobbies can you find in this passage?
4. 在下面句子的横线上填上恰当的词，改写原文中的句子。
Gardening a useful hobby. Because it is
5. 将文中划线部分（2）的英语句子译成汉语。
When we are born, we are given names that stay with us for our whole lives. Some names include good wishes and hopes from parents, while others may be unique（独一无二的）and easy to remember. But do you know how the new coronavirus（冠状病毒）got its name?
According to International Committee on Taxonomy of Viruses（国际病毒分类委员会）, an organization that names new viruses, the task of naming a virus is no less important than naming a person.
When a disease breaks out, people focus on the public health response and the official naming of a new virus is often put off. But naming a virus is never easy. Over the past ten years, some improper names have caused problems. In 2009, the “swine flu（猪流感）” was widely used before the official name, H1N1 virus, was announced. This led Egypt to kill all of its pigs even though it appeared and spread among people who hadn’t been near pigs. In 2015, MERS(Midle Eat Respiratory Syndrome（中东呼吸综合征）) caused a backlash（强烈抵制）against the nations and people of this area.
So in 2015, the World Health Organization（WHO）announced that the names of viruses should be easy to remember but avoid being named after geographic place, people, classes of animals and foods.
Following these rules, the new coronavirus we are suffering from（遭受痛苦）was named “COVID-19” by the WHO on Feb 11. In this name, “CO” means “corona”, “VT” stands for “virus” and “D” means “disease”.
Next time you read about a virus you don’t know（线索）, you may get some clues about it from its name.
1. According to the first paragraph, what are the features（特点）of people’s names?2. Is the task of naming a virus less important than naming a person?
3. What problem did the virus named “swine flu” cause?
4. When was the new coronavirus named “COVID-19”?
5. According to the passage, how can we know about a virus that we don’t know?
