A report says older adults who test their minds with increasingly difficult projects have better mental ability than those who do less demanding activities.

    To keep our brains sharp as we age, we are often told to keep our minds active. As the old saying goes, “Use it or lose it.” But, there is very little scientific evidence to support than.

Denise Park is head of the university's Center for ? Vital Longevity. She designed a study in which she and her tern placed 221 healthy aging and older adults into one of three groups.

    “We asked people to learn new things, like quilting or photography. We asked other people to just do fun things like being in a social group function but were not likely to have a very large effect.”

    The subjects took part in their assigned activities for 15 hours a week over three months. At the end of that time, the researchers found that the adults who learned new skills, such as digital photography, showed the greatest improvements on memory tests.

    No improvements were seen in the results of those in the social group that did activities together like going on field trips. There were also no improvements among the third group that listened to classical music or did crossword puzzles.

    Denise Park believes one reason for improved memory in the active learning group is that its members were being pushed to learn new skills. The other groups took part in what she call receptive activities. Learning new skills may not cure age-related mental decline. But, Ms. Park thinks being mentally active slows down the process.

Denise Park says the latest information shows that the improvements lasted for at least a year. She and her team plan to do longer follow-up studies with all three groups. She also is interested in learning whether taking part in demanding mental activities delays the development of conditions like Alzheimer's disease.

    Have you heard an old saying “The grass looks greeener on the other side of the fence”? It means other places often look better, more interesting than the place where you live. “Let's go to KFC for dinner and then watch some Japanese cartoons!” We all know it: more and more Chinese kids love American and Japanese food and movies. Some people worry that young Chinese are beginning to feel that way. They see young Chinese ignoring (忽视) Chinese culture and, instead, buying Japanese cartoon books, watching Korean soap operas and even celebrating Western holidays.

    Foreign books and soap operas are good, but Chinese writers and actors are just as good. As for holidays, Christmas is nice, but it can never have the meaning for Chinese that Spring Festival has, and the West has nothing to compare with the Mid-Autumn Festival. China has lots of cool things in its culture: calligraphy, Bejing Opera, quick meals on the streets, and even Jay Chou! And let's not forget the part of Chinese culture I like best: its friendliness. Not all countries are as warm as China.

    It's good to enjoy other cultures and learn from them, but they can never replace your own culture. It's good to look on the other side of the fence, but make sure you take a good long book. You will find that the grass isn't always greener.

    Although some people become worried about that, I don't think they should. Will we get more powerful without learning from other countries? Will Chinese people live more happily without American fast food? Besides, it's fun to learn about different cultures. Chinese kids can learn about other cultures and have fun, but they also need to learn more about their own culture. Be proud of Chinese culture and of being Chinese!

    Wild animals are our friends, but many of them are getting fewer and fewer. We should try to protect them. The four animals below are now in danger.

     Tibetan Antelopes

    Tibetan antelopes are medium - sized animals. They mainly feed on grass. They are usually found in groups of about 20. They are killed for their wool, which is warm, soft and fine and can be made into expensive clothes. Although people can get the wool without killing the animals, people simply kill them before taking the wool. The number of them is dropping year by year. There are less than 75,000 Tibetan antelopes left in the world, down from a million 50 years ago.

    Golden Monkeys

    Golden monkeys are mainly found in Sichuan, Gansu, Shanxi provinces and Shengnongjia mountainous area of Hubei Province. Golden monkeys have golden - orange fur. They move around in the daytime, usually in groups of as many as 100 to 200 heads, or 20 to 30 heads. They feed on fruits and young leaves of bamboos. But people are destroying the environment where they live. Trees and bamboos are disappearing, so golden monkeys have less and less to eat.

    Elephants

    Elephants are very big and strong. They are bigger than any other animals on land. They are grey and have long trunks and tusks. They have poor eyesight, but very good hearing and smell. They can lift heavy things and break down branches with their trunks. Elephants are very friendly towards each other and towards their neighbours. Normally, they live in a group for many years. Young male elephants do not leave the group until they are about 12 years old. Now, there are very few elephants in the world. The number of them is becoming smaller and smaller because their living areas are used for fanning. Also, people hunt them for their tusks.

    Wolves

Wolves are not very big. They have grey fur. Solves have very good eyesight, hearing and smell. Wolves' food is various. They eat animals, insects and snails. They are friendly to each other and never attack people. They do not kill for fun. Wolves are in danger, too. They are losing their living areas because people cut down forests. Soon they will have no home or food.

    Nature Nurtures Farm plans to organize some charity activities in this summer. It hopes to teach young people about charity. The farm wants to get about 30,000 dollars through these activities. They will use the money to improve the public water system in the city. Here is the information about these activities.

    Farm Festival

    Time: July 18th, 9 am--4 pm

    Place: Nature Nurtures Farm

    Admission: 10 dollars for anyone 5 or older

    Other: You can enjoy music, feed farm animals, visit the fruit garden and take     pictures.

    Art show

    Time: July 18th, 2 pm--5 pm

    Place: State Capital Museum

    Admission: Free

    Other: 67 works of art will be here. You can buy any one of them, the money will go to the city public water system.

    Mentoring program

    Time: August 7th, 10 am--3 pm

    Place: Nature Nurtures Farm

    Admission: Free

    Other: Teens aged from 7 to 18 can join the program. Children with problems in helping others can get help from this program.

    It is estimated that more than half the world's population is bilingual (双语的), and in an increasingly globalised world, there are obvious benefits of speaking more than one language. However, for many years, parents were advised not to teach their children to speak more than one language from birth. Learning two or more languages simultaneously (同时) was believed to cause confusion and slow down academic development. While it is certainly true that children who are learning to speak more than one language as their mother tongue will often mix the languages up or speak a little later, these are temporary problems, and there is no reason to avoid teaching a child more than one language.

    In fact, there are plenty of reasons to encourage your child to become bilingual from birth. As well as the obvious benefits of being able to communicate with more people, and the possibility of earning more money, children who speak more than one language have been shown to score more highly in achievement tests at school. This is true for mathematics as well as tests of verbal (言语的) skills.

    And in later life it has been found that bilinguals, on average, will tend to develop Alzheimer's disease five years later than monolingual speakers. Speaking three or more languages offers even more protection. It seems that the increased number of connections within the brain allows bilinguals to cope better with brain damage.

    But is it too late if you haven't already learned a second language in childhood? It used to be thought that the adult brain was very fixed, but recent research has shown that we continue to develop new connections in the brain throughout our lives, meaning that it's perfectly possible to learn another language to a high standard. Older learners are less likely to have native-like pronunciation, but they are better at learning vocabulary as they are able to use far more skills and strategies than children. And learning a language is like using a muscle – the more you use it, the stronger it gets, meaning that you will find your third language easier than your second, and so on.

    South Africa is the water-lovers' paradise. Whether you want to be by the sea, on the sea or even under it, there are countless ways to get your ocean experience. Almost all of them are located on South Africa's east coast, where the Indian Ocean keeps water warm.

    Thompson's Bay, Ballito

Drive 40 minutes north of Durban to reach the unique coastal town of Ballito. Popular with holidaymakers, Ballito has a choice of pretty beaches—- and the best for swimming is

    Thompson's Bay. This scenic cove (小海湾)is sheltered from the wind and characterized by its calm waters, interesting rocky outcrops and a fascinating geological hole-in-the-wall. There's a walled tidal pool for those who are nervous to swim in the open ocean, making this spot a particularly good choice for families.

    Umhlanga Rocks, Durban

    Located a 20-minute drive from central Durban, the resort town of Umhlanga is an upmarket getaway for vacationing South Africans and visitors in the know. The main Umhlanga Rocks beach boasts safe swimming waters and endless golden sands, again protected by lifeguards and shark nets. A paved walkway provides direct access to the town's beachfront shops, restaurants and bars.

    Gonubie Beach, East London

    The coastal town of Gonubie is seen by many as a suburb of East London, one of the largest cities of the Eastern Cape. Its picture-perfect beach offers great swimming areas in the open sea. The Gonubie River reaches the sea at this point, too, and offers an alternative bathingspot on days when the surf is bigger than usual. All along the river's green banks, you'll find a series of shaded spots perfect for summer picnics and barbecues.