Most people would say the sea is blue and green. But the people who live near the coast of Zhejiang may say it is red. It is not people who caused the colour change, but very small living thing in the sea. They are algae(藻类)and protozoa(原生动物). They come in many different colours; red, yellow or brown. Red is the easiest of those to see so when this happens people call it a “red tide.”

    Red tides only happen when conditions in the sea are right. In the past few years, factories and people have been putting more chemicals into the sea. These chemicals help algae and protozoa to grow very quickly. The temperature of the sea is also important. Red tides usually happen at 20 to 30 degrees Celsius. Red tides often happen in dry, warm areas where there is little wind. Living things grow easily in these places. Sometimes fishermen help red tides by mistake. They put small sea animals into the water for food to help fish grow.

    Those living things do more than change the colour of the water-they also put poison and mucus(黏液)into the sea. This is had for fish. The poison is bad for their brains. And too much mucus in the sea fills up fish's gills(鳃) so they can't breathe. Lots of dead fish and other sea animals are now washed up on Chinese beaches.

    Red tides can be bad for people too. We shouldn't eat fish from red-tide waters. The algae gets inside of fish and it smells bad. It can make your eyes water. If people eat fish with too much algae inside they could die.

    Fishermen in Zhejiang are having a hard time right now. Because of the red tide, they are selling 30% less fresh seafood than usual.

    In China red tides usually happen in May and June around places like Fujian Guangdong and Hong Kong.

    Many other countries sometimes also have red tides. But it seems that we have few ways to stop red tides. They can last as long as 16 months.

    Having a learning disability doesn't mean you can't learn, but you'll need some help and need to work extra hard. If you have a learning disability such as dyslexia or dyscalculia, remember that you are not slow or stupid.

    Learning disabilities can be genetic. That means they can be passed down in families through the genes. But kids today have an advantage over their parents. Learning experts now know a lot more about the brain and how learning works, and it's easier for kids to get the help they need.

    Dyslexia is a learning disability that means a kid has a lot of trouble reading and writing. Kids who have trouble with math may have dyscalculia. Other kids may have language disorders, meaning they have trouble understanding language and understanding what they read.

    It can be confusing, though. What qualifies as “trouble" enough to be diagnosed as a learning disability? Reading, doing math, and writing letters may be tough for lots of kids at first. But when those troubles don't fade away and it's really difficult to make any progress, it's possible that the kid has a learning disability.

    Finding out you have a learning disability can be upsetting. You might feel different from everyone else. But the truth is that learning disabilities are pretty common. And if your learning specialist or psychologist has figured out which one you're facing, you're on the right track. Now, you can start getting the help you need to do better in school.

    But for this special help to really work, you'll need to practice the new skills you're learning. It may take a lot of efforts every day. That can be a challenge, but you can do it soon, you'll enjoy the results of all your hard work: more fun and success at school.

    Milton Hershey was born near the small village of Derry Church, Pennsylvania, in 1857. He only attended school through the fourth grade; at that point, he was apprenticed(做学徒) to a printer in a nearby town. After a while, he left the printing business and was apprenticed to a Lancaster, Pennsylvania candy maker. And at the age of eighteen, he opened his own candy store in Philadelphia. In spite of his talents as a candy maker, the shop failed after six years.

    After the failure of his Philadelphia store, Milton headed for Denver, where he learned the art of making caramels(焦糖). Then in Denver, Milton once again attempted to open his own candy-making businesses, in Chicago, New Orleans, and New York City. Finally, in 1886, he went to Lancaster, Pennsylvania, where he raised the money necessary to try again. This company— the Lancaster Caramel Company—established Milton's reputation as a master candy maker.

    In 1893, Milton attended the Chicago International Exposition, where he saw a display of German chocolate-making implements. Fascinated by the equipment, he purchased it for his Lancaster candy factory and began producing chocolate, which he used for coating his caramels. By the next year, production had grown to include cocoa, sweet chocolate, and baking chocolate. The Hershey Chocolate company was born in 1894 as a subsidiary(子公司) of the Lancaster Caramel Company. Six years later, Milton sold the caramel company, but reserved the rights, and the equipment, to make chocolate. He believed that a large market of chocolate consumers was waiting for someone to produce reasonably priced candy. He was right.

    Milton Hershey returned to the village where he had been born, in the heart of dairy country, and opened his chocolate manufacturing plant. With access to all the fresh milk he needed, he began producing the finest milk chocolate. The plant that opened in a small Pennsylvania village in 1905 is today the largest chocolate factory in the world. The sweets created at this facility are favorites around the world.

    The area where the factory is located is now known as Hershey, Pennsylvania. Within the first decades of its existence, the town of Hershey thrived, as did the chocolate business. A bank, a school, churches, a department store, even a park and a trolley system all appeared in short order; the town soon even had a zoo. Today, a visit to the area reveals the Hershey Medical Center, Milton Hershey School, and Hershey's Chocolate World—a theme park where visitors are greeted by a giant Reeses Peanut Butter Cup. All of these things— and a huge number of happy chocolate lovers—were made possible because a caramel maker visited the Chicago Exposition of 1893!

    Resorts of every kind have sprung up to cater to the Englishman need to spend a part of the year, however briefly, by the seaside. No town in Britain is more than eighty miles from the sea and there are seaside resorts all round the coast. On a summer Sunday most of the roads that lead to the sea axe congested (拥挤) with cars full of people eager to get a breath of sea air. In the evening when everyone is full of food, ice-cream and lollypops, there is the long slow drive home on roads crowded with returning cars.

    Brighton

    Brighton is one of the best-known south coast resorts and is very popular for day trip excursions. It is only fifty miles from London and can be reached by fast train in an hour. At the weekend the pebbled beaches are thronged with people sunbathing or picking their way to the water's edge for a dip.

    Bournemouth

    Located a hundred miles from London, the beaches are wide and sandy. White houses line the cliff tops and narrow valleys, densely wooded with pine trees, reach down to the shore. The area near to the town of Torquay on the Devon coast is sometimes called Britains Riviera and the climate is so mild that palm trees grow along the sea front.

    Blackpool

    On the north-west coast, a popular resort for the people in the industrial north, Blackpool is a gay, noisy town, famous for its amusement facilities and the magical lights. At night people travel from miles around to see the extravaganza of lights decorating the sea front.

    Southend

    On the east coast at the mouth of the Thames, Southend is, like Brighton, one of the favorite resorts of Londoners. The pier here is the longest in Britain and offers a great variety of differing entertainments.

    From quiet paths by a stream in a forest to busy roads running through a city, people have created various forms of routes in different places. These now exist all around us, and their use is imperative for societies. These routes have enabled people to move, transport things, and send information from one place to another quickly and safely. Throughout history, they have been important in our daily lives.

    Early routes were often formed naturally on land. They gradually developed over long periods of time while people traveled them on foot or horseback. A significant turning point in their history arrived when the first wheeled carts appeared in ancient times. Once this happened, people recognized the importance of well-maintained routes. Therefore, towns, cities, and entire countries improved them. As a result, life became more convenient, communities grew, economies evolved, and cultures expanded.

    People have established routes on water, too. Rivers and canals have served as effective routes for people to move around and carry things. For instance, in the old, Japanese city of Edo, water routes were used for the transportation of agricultural products, seafood, and wood. People have also opened routes across the sea. The seaways were critical for the navigation of ships, particularly in the days when they moved mainly by wind power. Using these sea routes, people could travel great distances, and go to places they had not previously been able to reach.

    People have gone on to open routes in the sky as well. Since the invention of the airplane, they have made it possible to travel long distances easily. Eventually, people became able to travel safely and comfortably high in the sky, and going vast distances only took a small amount of time.

    Today, we have a new type of route, the Internet. By using this worldwide route, people can easily obtain information that once was available mainly from books and face-to-face communication. They can also instantly send messages to large numbers of people all at once.

    As long as there have been people, there have been routes to connect them. Currently unknown routes will surely take us even further in the future.

In a study of 33 years of trends in Body Mass Index (体重指数) across 200 countries, the scientists found that people worldwide are getting heavier {#blank#}1{#/blank#}that most of the rise is due to gains in BMI in rural areas. 

BMI is an internationally recognized measurement tool {#blank#}2{#/blank#}

gives an indication of whether someone is a healthy weight. It is calculated by dividing a {#blank#}3{#/blank#} (person) weight in kg by their height in metres squared, and a BMI of between 19 and 25{#blank#}4{#/blank#} (consider) healthy. 

The study found that between 1985 and 2017, average rural BMI increased {#blank#}5{#/blank#}2.1 in women and men. In cities, however, the gain {#blank#}6{#/blank#} (be)1.3 in women and 1.6 in men. The researchers described "striking changes" in the geography of BMI. In 1985, urban men and women in more than three quarters of the countries{#blank#}7{#/blank#} (study) had higher BMIs than men and women in rural areas. But 30 years later, the BMI difference between urban and rural people in many countries had narrowed {#blank#}8{#/blank#} (sharp). 

This may be due to some disadvantages for people {#blank#}9{#/blank#} (live) in the countryside, including {#blank#}10{#/blank#} (low) levels of income and education, higher costs of healthy foods, and fewer sports facilities.