Whenever the word “hero” comes to me, I immediately think of three Hs: honorable, hardworking, and happy. When I think more about this word, I picture someone who has accomplished good things for people and tries to do the right thing Hattie Elizabeth Alexander is one person whom I find to be very heroic.

    Hattie was born in Baltimore, Maryland on April 5, 1901. During her time at College she earned her Bachelor's Degree in Bacteriology and Physiology. These were just the first steps towards what she was finally going to be remembered for. After college Hattie attended Johns Hopkins School of Medicine and received her medical degree.

    After her education, she pursued her career, and after much time and hard work, she drastically reduced the number of infants(幼儿) dying from meningitis(脑膜炎). Hattie was very dedicated to her work and helped at as many locations as she could. Spending substantial(大量的) time in the laboratory, Hattie successfully developed a cure against the disease, which decreased the death rate to 20 percent. At the same time, she was also a teacher working with Columbia University.

    She was a caring lady interested in other people's lives. When she was teaching at Columbia University, other members would talk to her about students that were failing their classes, and somehow Hattie could always find convincing reasons as to why they should not be driven away. Later, Hattie became an instructor in Pediatrics at New York City's Babies Hospital. After many honors, she became the first woman president of the American Pediatric Society in 1965. This was her last major achievement, for soon after, Hattie died of cancer on June 24, 1968.

    Hattie is my hero because her positive attitude and strength helped her accomplish great things for others. She gave them her strength by developing medicines against diseased, which, by doing so, made them stronger. This is what makes Hattie Elizabeth Alexander my hero.

    What will people die of 100 years from now? If you think that is a simple question，you have not been paying attention to the revolution that is taking place in bio-­technology（生物技术）. With the help of new medicine，the human body will last a very long time. Death will come mainly from accidents，murder and war. Today's leading killers，such as heart disease，cancer，and aging itself，will become distant memories.

    In discussion of technological changes，the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live? Human brains were known to decide the final death. Cells（细胞） are the basic units of all living things，and until recently，scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells，such as those of brain cells，would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100，medicine will have advanced to the point at which every 10 years or so，people will be able to take medicine to repair their organs（器官）. The medicine，made up of the basic building materials of life，will build new brain cells，heart cells，and so on－in much the same way our bodies make new skin cells to take the place of old ones.

    It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence，but many technical problems still must be cleared up on the way to this wonderful future.

    Mr. Peter Johnson, aged twenty- three, battled for half an hour to escape from his trapped car yesterday when it landed upside down in three feet of water. Mr. Johnson took the only escape route—through the boot (行李箱).

    Mr. Johnson's car had finished up in a ditch (沟渠) at Romney Marsin, Kent, after skidding on ice and hitting a bank. "Fortunately, the water began to come in only slowly," Mr. Johnson said. "I couldn't force the doors because they were jammed against the walls of the ditch and dared not open the windows because I knew water would come flooding in."

    Mr. Johnson, a sweet salesman of Sitting Home, Kent, first tried to attract the attention of other motorists by sounding the horn and hammering on the roof and boot. Then he began his struggle to escape.

    Later he said, "It was really a half penny that saved my life. It was the only coin I had in my pocket and I used it to unscrew the back seat to get into the boot. I hammered desperately with a hammer trying to make someone hear, but no help came."

    It took ten minutes to unscrew the seat, and a further five minutes to clear the sweet samples from the boot. Then Mr. Johnson found a wrench (扳手) and began to work on the boot lock. Fifteen minutes passed by. "It was the only chance I had. Finally it gave, but as soon as I moved the boot lid, the water and mud poured in. I forced the lid down into the mud and scrambled clear as the car filled up."

    His hands and arms cut and bruised，Mr. Johnson got to Beckett Farm nearby, where he was looked after by the farmer's wife, Mrs. Lucy Bates. Trembling in a blanket, he said, "That thirty minutes seemed like hours." Only the tips of the car wheels were visible, police said last night. The vehicle had sunk into two feet of mud at the bottom of the ditch.

    Summer is the most popular season to visit Texas since there is so much to see and to do. While visiting the Lone Star State this summer, don't miss visiting some of these attractions and taking part in some of Texas' best summer vacation activities.

    Visit SeaWorld

    There are sea life shows, adventure camps, thrilling rides and a water park. A great many activities are waiting for you at SeaWorld.

    Windsurf at South Padre

    With miles of shallow（浅的), calm water in the Lower Laguna Madre and strong winds coming off the Gulf of Mexico. South Padre Island is a windsurfer's dream.

    Swim at Barton Springs

    Barton Springs is in the famous Zilker Park. It was formed when Barton Creek was built. Since its opening. Barton Springs has become one of the most popular swimming pools in the state.

    Take part in an outdoor adventure

    In the scenic Texas Hill Country. Lake Buchanan Adventures offers different kinds of activities, including boating, hiking, camping and more.

    Camp and hike in Big Bend Park

    Big Bend offers a great number of outdoor activities in an old way. Backpacking. mountain biking fishing boating hiking nature watching and camping-you name it. If it can be done outdoors.it can be done in Big Bend.

    Enjoy saltwater fishing

    Saltwater fishing in Texas is as good as anywhere else in the USA. More and more fishermen have been discovering this in recent years and packing their bags and rods （鱼竿） to make good use of Texas' world-class saltwater fishery.

    Do women make BETTER astronauts? Russia locks an all-female crew in space simulator (太空模拟器) for eight days to find out. Six Russian women have been sent into a spaceship to begin a unique experiment testing how an all- female crew would relate to others on a trip to the Moon and back.

    "It's interesting for us to see what is special about the way a female crew communicates," said Sergei Ponomaryov, the experiment's leader." it will be particularly interesting in terms of psychology," said the institute's director Igor Ushakov. "I'd like to wish you a lack of conflicts, even though they say that in one kitchen, two housewives find it hard to live together," he added.

    The volunteers include scientific researchers, a doctor and a psychologist. The test period simulates (模仿) a flight to the Moon and back, with the women carrying out 10 experiments covering psychology and human biology. Russia sent the first woman into space, Valentina Tereshkova, in 1963 but has fallen behind since. Last year, it sent its fourth female astronaut into space, Yelena Serova. Serava complained of a great deal of media interest in how she would wash her hair aboard the International Space Station, pointing out that male astronauts did not face the same line of questioning.

    The women found themselves fielding questions at a press conference about how they would act without men or makeup for eight days, "We are very beautiful without makeup," said participant Darya Komissarova. Her colleague Anna Kussmaul was more direct: "We are doing work. When you're doing your work, you don't think about men and women." They plan to spend their 11/2 hours per day of free time watching films, reading and playing board games. Team leader Yelena Luchnitskaya said she expected the women to deal with any conflict.

    Tiny microbes(微生物)are at the heart of a new agricultural technique to manage harmful greenhouse gas. Scientists have discovered how microbes can be used to turn carbon dioxide into soil­enriching limestone(石灰石), with the help of a type of tree that grows in tropical areas, such as West Africa.

    Researchers have found that when the Iroko tree is grown in dry, acidic soil and treated with a combination of natural fungi(霉菌)and other bacteria, not only does the tree grow well, it also produces the mineral limestone in the soil around its root.

    The Iroko tree makes a mineral by combining Ca from the earth with CO₂ from the atmosphere The bacteria then create the conditions under which this mineral turns into limestone. The discovery offers a new way to lock carbon into the soil, keeping it out of the atmosphere. In addition to storing carbon in the trees leaves and in the form of limestone, the mineral in the soil makes it more suitable for agriculture.

    The discovery could lead to reforestation(重新造林) projects in tropical countries, and help reduce carbon dioxide in the atmosphere in the developing world. It has already been used in West Africa and is being tested in Bolivia, Haiti and India.

    The findings were made in a three­year project involving researchers from the Universities of Edinburgh, Granada, Lausanne and Delft University of Technology. The project examined several microbiological methods of locking CO₂ as limestone, and the Iroko­bacteria way showed best results. Work was funded by the European Commission under the Future&Emerging Technologies(FET)scheme.

    Dr. Bryne Ngwenya of the University of Edinburgh's School of GeoSciences, who led the research, said: "By taking advantage of this natural limestone­producing process, we have a low­tech, safe, readily employed and easily operating way to lock carbon out of the atmosphere, while improving farming conditions in tropical countries."