A brain can also simply be a smartperson,  If a person is called brainy,she is smart and intelligent. If a family has many children but one ofthem is super smart, you could say, "She's the brains in the family. "And if you are the brains behind something you are responsible for developing or organizing something. For example, Bill Gates is the brains behind Microsoft Brain trust is a group of experts who give advice. Word experts say the phrase "brain trust" became popularwhen Franklin D. Roosevelt first ran for president in 1932, Several professors gave him advice on social and political issues facingthe U.S.

    These professors were called his "braintrust." These ways we use the word"brain" all make sense. But other ways we use the word are not so easy to understand. Forexample, to understand the next brain expression, you first need to know theword “drain." As a verb to drain means to, remove something by letting it flow away. So abrain drain may sound like a disease where the brain flows out the ears. But, brain drain is when a country's most educated people leave their countries to live in another. The brains are, sort of, draining out of the country.

    However, if people are responsible for agreat idea, you could say they brainstormed it. Here, brainstorm is not an act of weather. It is a process of thinking creatively about a complex topic. Forexample, business leaders may use brainstorming to create new products, and government leaders may brainstorm to solve problems.

    If people are brainwashed, it does notmean their brains are nice and clean. To brainwash means to make someone accept new beliefs by using repeated pressure in a forceful or tricky way. Keep inmind that brainwash is never used in a positive way.

    Xinhua News—The Beijing government has set out to recruit thousands of university graduates to work as junior officials in rural areas to both improve rural administration and ease the city's employment problems.

    The government plans to recruit 3,000 university graduates this year, 1,000 more than last year, to work as assistants to village heads or party secretaries in suburban areas.

    People interested in jobs in Beijing's rural villages and towns can send applications to Beijing Municipal Bureau of Personnel or log on to www.bjbys.com from February 1 through March 15.

    “We hope university graduates will seize this opportunity to use their knowledge in rural villages and to start their careers,” Sun Zhenyu, the Deputy Director of Beijing Personnel Bureau, told Xinhua News Agency.

    The government has promised successful candidates a monthly salary of 2,000 Yuan in the first year, 2,500 Yuan the second year and 3,000 the third year, provided their performance is up to the required standards, Sun said.

    Wang Lina, who graduated from Beijing Union University last year, was one of the first graduates to find work in the city's countryside. After majoring in Industrial and Commercial Administration, Wang served as the assistant to the village head of Ertiaojie Village in suburban Beijing's Pinggu District. For one project, Wang contacted people at Beijing Academy of Agricultural and Forestry Sciences and arranged for the local farmers to receive training in strawberry planting. Her efforts paid off. The village had a plentiful harvest of organic strawberries earlier this year.

    Nationwide, about 150,000 university graduates found employment in rural areas last year, according to the figures provided by the Ministry of Education.

    The ministry predicts that 4.95 million students will graduate from universities across the country this year, 820,000 more than last year. About 1.4 million of them are unlikely to find jobs when they graduate. In Beijing, a record of 200,000 people are expected to graduate from university this year. Less than half of them are expected to be offered jobs, according to Beijing Personnel Bureau.

    Our warming planet is expected to face serious water crisis（危机）in the coming decades — which means each nation's natural resource will be more important than ever.

    Meeting people from another culture can be difficult. From the beginning, people may send the wrong signal. Or they may pay no attention to signals from another person who is trying to develop a relationship.

    Different cultures emphasize the importance of relationship building to a greater or lesser degree. For example, business in some countries is not possible until there is a relationship of trust. Even with people at work, it is necessary to spend a lot of time in "small talk", usually over a glass of tea, before they do any job. In many European countries, like the UK or France, people find it easier to build up a lasting working relationship at restaurants or cafe rather than at the office.

    Talk and silence may also be different in some cultures. I once made a speech in Thailand. I had expected my speech to be a success and start a lively discussion, instead there was an uncomfortable silence. The people present just stared at me and smiled. After getting to know their ways better, I realized that they thought I was talking too much. In my own culture, we express meaning mainly through words, but people there sometimes feel too many words are unnecessary.

    Even within Northern Europe, cultural differences can cause serious problems. Certainly, English and German cultures share similar values, however, Germans prefer to get down to business more quickly. We think that they are rude. In fact, this is just because one culture starts discussions and makes decisions more quickly.

    People from different parts of the world have different values, and sometimes these values are quite against each other. However, if we can understand them better, a multicultural environment will offer a wonderful chance for us to learn from each other.

    Scientists are studying different foods, and they will see which foods protect us from cancer(癌症), and which cause it. It is known that a healthy diet(饮食) will help keep a healthy body weight, which can also decrease the risk(风险) of many types of cancer.

    Fruit and vegetables

    Fruit and vegetables are an important part of a healthy diet. They can decrease the risk of some cancer types like mouth and throat cancer. They are a good source of many important nutrients such as vitamin A, vitamin C, vitamin E, and are an excellent source of fiber.

    Our advice

    Try to get plenty of fruit and vegetables in your diet. Eating fruit and vegetables with a variety of colors will help you get many kinds of vitamins and minerals, as the chemicals that give these foods their colors are good for you.

    Meat

    Eating lots of red and processed meat can increase(增加) your risk of stomach cancer. Red meat includes all fresh and frozen beef, pork and lamb. Processed meat includes ham, bacon and sausage. White meat, such as chicken, is unlikely to increase your risk of cancer.

    Our advice

    Eat smaller and fewer parts of red and processed meat. Try using beans or peas instead of meat in your diet. When you cook meat, use low-temperature methods.

    Fat

    Fat is a necessary part of our diet but high-fat diet can increase our risk of cancer, heart disease and other diseases. Meat is higher in saturated fat(饱和脂肪) and eating too much saturated fat may increase your risk of breast cancer.

    Our advice

    Try not to eat too much fatty foods. In particular, try to cut down on saturated fat contained in fatty meat, biscuits, and butter. Try to avoid frying foods in lots of oil.

    A so-called “smart drug” intended to improve people's cognitive (认知的) function to protect the brain from altitude sickness.

    Visiting high-altitude sites for work, spot, religious pilgrimages and military can result in cognitive effects, including memory loss and attention difficulties. There's little you can do to prevent these symptoms except acclimatize -but this takes time and doesn't always work. A drug called oxiracetam might be the answer.

    ShengLi Hu at the Third Military Medical University, Chongqing, China and her colleagues studied the performance of male military personnel at altitude. All lived in towns around 1,800 meters above sea level, During the study, they spent eight days at this altitude and then climbed for three days to reach 4,000 meters, where they stayed for up to a month.

    Twenty participants took oxriacetam three times a day for the first 15 days of the study, while another 20 received no intervention. The man did tests of attention and memory at the start and end of the study and 20 days in, by which time they had been at 4,000 meters for nine days.

    While all the participants experienced a drop in cognitive ability at 4,00 meters, those who took oxiracetam showed a much smaller drop than the control group.

    The team found that at high altitude the brain stem, which plays a critical role in supporting basic living functions, received blood at the expense of areas responsible for more advanced cognitive functions. But in people who took oxiracetam, blood flowing throughout the brain rose, thus offering more oxygen to these areas. This may be how the drug seems to lessen cognitive problems like with low oxygen.

    It isn't yet known whether diverting blood in this way could have negative effects in the long run. "The results are striking and imply that oxiracetam may be beneficial for helping to relieve cognitive ability decline caused by altitude." says Timothy Hales at the University of Dundee, UK.