It is a cold and dry winter morning. When you wake up, you feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a moment. Could it just be a common cold or the flu that's been going around?

    A cold gives you a runny nose and cough. But it's usually easy to deal with. Some take medicine while others drink herbal tea or chicken soup. Usually you feel better after a week.

    On the other hand, the flu can be much more dangerous. It usually gives you fever.

    Sometimes it can cause death. According to an American magazine, the worst flu killed about 50 million people from 1918 to 1919.

    Don't worry. If you get a flu vaccine（疫苗）, it can stop you from getting the virus. Flu vaccines work by giving the body a small amount of flu viruses. This causes your body to develop antibodies. So next time you get the flu, the antibodies should help you.

    The flu virus changes every few years. Therefore, there are so many types of flu, such as H1N1 and H5N1. The antibodies for one type of flu can't help us against all types of flu. That's why we need to get vaccine every year.

    However, good health habits may also help stop you developing a cold or flu. Washing your hands often helps stop you from getting viruses. It is also important to get regular exercise and eat healthy food. All these can help you strengthen your immune system.

    Listening to audio books(有声读物) is a really terrific way to enjoy all kinds of books during those times of the day when stopping to sit down and read a book is not an option. An audio book gives the listener hours and hours of entertainment or instruction, or sometimes both at the same time. They are great for people of all ages and make a long road trip a more interesting experience, instead of being boring and dull.

    The biggest benefit of an audio book is that it can be listened to anyplace and anytime. It is a favorite companion for people while they are traveling, commuting, exercising, shopping, working in the garden, or even dusting and vacuuming the house. Using headphones with your favorite audio book player allows you to listen to and absorb the information no matter what might be going on around you.

    Even when you are in a situation that is quiet and are able to enjoy a good audio book, there are still advantages of using your headphones. You can often improve your retention(记忆力) and comprehension of the material when you use headphones because they help reduce distractions from other noises and help you focus better.

    There are a number of different audio books these days that people can choose from. There are audio books on CDs, on audio cassettes(盒式磁带) and also as MP3s and any standard CD player, cassette recorder, or MP3 player that you might use to listen to music can function as an audio book player as well.

    No matter which kind of audio book you prefer to listen to, there is an ever-increasing variety of works that you can select from these days. Virtually any subject matter that is contained in printed books will have at least some audio version available as well. However, books on audio cassettes are starting to become rarer.

    A Guide to the University

    Food

    The TWU Cafeteria is open from 7 a.m. to 8 p.m. It serves snacks(小吃), drinks, ice cream bars and meals. You can pay with cash or your ID cards. You can add meal money to your ID cards at the Front Desk. Even if you do not buy your food in the cafeteria, you can use the tables to eat your lunch, to have meetings with your friends and to study.

    If you are on campus in the evening or late at night, you can buy snacks, fast food, and drinks in the Lower Cafe located in the bottom level of the Douglas Center. This area is often used for entertainment such as concerts, games or TV watching.

    Relaxation

    The Globe, located in the bottom level of McMillan Hall, is available for relaxing, studying, cooking and eating. Monthly activities are held here for all international students. Hours are from 10 a.m. to 10 p.m., closed on Sundays.

    Academic Support

    All students have access to the Writing Center on the upper floor of Douglas Hall. Here, qualified volunteers will work with you on written work, grammar, vocabulary and other academic skills. If you need help, you can sign up for an appointment by finishing the sign-up sheet outside the door, two 30-minute appointments per week maximum. This service is free.

    Transportation

    The TWU Express is a shuttle(班车)service. The shuttle transports students between campus and the shopping center, leaving from the Mattson Centre. Operation hours are between 8 a.m. and 3 p.m. Saturdays only. Round trip fare is $1.

    Many doors close for those who have ever been in prison for a crime. It can be difficult for former prisoners to reenter society. A number of training programs are aimed at reopening doors for these men and women.

    "Together We Bake" teaches cooking and marketing skills to women who have spent time in prison so they can start new lives. It is a 10-week program which teaches women how to bake and sell cookies. Two friends, Tricia Sabatini and Stephanie Wright, created the program.

    "I have a background in social work and she is an amazing baker," Ms. Wright explains. "We discovered that for this population of women, returning from prison into the community, there aren't a lot of resources for them. So we thought we could combine our passions (激情) and develop this job as a training program. "Stephanie Wright says they started the program earlier this year." We had two classes so far that have graduated. This is our third class. We have eight women currently in this class. We've 16 women graduated in the first two classes."

    Terry Garred is one of the graduates. She says the program helped her turn her life around. Next she hopes to complete her high school studies. She is also working for "Together We Bake" to help other women follow the path she took.

    The program includes classes in which the women talk about their experiences and learn communication and job skills. Thirty-six-year-old Jamie White had spent three years in jail, which made her a little puzzled about her future life back into society. But she found those meeting were very helpful. She learned how to open up, and was just trying to better herself. She gained new skills. She sells baked goods at local markets every weekend now.

    Mom wanted only one thing for her birthday. "Can you find me another copy of this song?" she asked, and handed me a worn-out cassette tape. I knew exactly what was recorded on it: My Redeemer. I heard the song played at least a thousand times while growing up. After so many years, the cassette tape was too worn out to be used. I promised her I would find a replacement.

    My Redeemer became Mom's favorite song after my younger brother Tim was killed by a drunk driver in 1973. The only thing that helped her calm down was the soulful sound of My Redeemer from the local radio station. We recorded it on a cassette tape so she could listen to it any time she wanted but none of us knew who the soloist(独唱者) was. These days, I thought the song would be easy to find out. I went home and searched the Internet. Several songs with that title popped up, but none of them was the one Mom loved. I got frustrated.

    Mom's birthday drew near and then one day, I was driving home, listening to our local radio station. A familiar tune came on. It was My Redeemer!As soon as I could, I phoned the station. I got a line on the soloist, who was called Alan Parks. I typed his name into Google and found his home number in South Carolina. Minutes later, I was telling him how much his recording meant to Mom. He offered to ship two CDs out to me personally. I gave him my address. "Red Lion, Pennsylvania?"he said. "Do you know the Logans?""They are our neighbors!""I've been friends with them for 25years," Alan said. "They'll be at my concert at York Gospel Chapel on April 17th. Would you and your mom come too?" We sure would. Mom was excited to hear Alan sing My Redeemer to her, live in concert-on the evening of her 87th birthday.

    People have been wondering why elephants do not develop cancer even though they have lifespans (寿命) that are similar to humans, jiving for around 50 to 70 years.

    Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors (肿瘤) developing. To be precise, they found 20 copies of an anti-tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.

    According to the research, the extra copies of the gene improved the animal's sensitivity to DNA damage, which lets the cells quickly kill themselves when damaged before they can go on to form deadly tumors.

    "An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals," the study author Dr Vincent Lynch told The Guardian. If every living cell has the same chance of becoming cancerous (癌变的), large creatures with a long lifespan like whales and elephants should have a greater risk of developing cancer than humans and mice. But across species, the risk of cancer does not show a connection with body mass.

    This phenomenon was found by Oxford University scientist Richard Peto in the 1970s and later named "Peto's paradox (悖论)”". Biologists believe it results from larger animals using protection that many smaller animals do not. In the elephant's case, the making of TP53 is nature's way of keeping this species alive.

    The study also found that when the same genes were brought to life in mice, they had the same cancer resistance as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers spreading or even developing in the first place.

    "Nature has already figured out how to prevent cancer," said Joshua Schiffman, a biologist at the School of Medicine, University of Utah, US. "It's up to us to learn how different animals deal with the problem so that we can use those strategies to prevent cancer in people."