Read the following article and select the best answer. Article: A super drug that could remove Alzheimer's ,heart disease and diabetes and help people live to 100 is being developed by scientists. Their research is based on the identification of three genes that help prolong lives and prevent diseases which occur in old age. Medically controlling the proteins made by the " longevity genes" will allow millions to live longer, predicts Dr Nir Barzilai. Those whose DNA strongly features the three genes are 80 percent less likely to develop Alzheimer's. The genes also fight against the deadly impact of smoking, poor diet, obesity and lack of exercise. Already, several laboratories are working on a pill to imitate the benefits of the genes and Dr Barzilai thinks it could be tested within three years. The pill could remove some diseases that damage old age. " The advantage of finding a gene that involves longevity is that we can develop a drug that will imitate exactly what this gene is doing," he said. Of the three longevity genes, two genes increase the production of so-called good cholesterol , which reduces the risk of heart disease. The third prevents diabetes. They were discovered by Dr Barzilai's team while studying the DNA of 500 Ashkenazi Jews with an average age of 100. The chances of living that long are one in 10,000 but the group, which shared relatively few common ancestors, was 20 times more likely to hit the entury. Dr Barzilai said: " 30 percent of them were obese or overweight and 30 percent smoked two acks of cigarettes a day for more than 40 years, however they can live to 100." But Andrew Ketteringham of the Alzheimer's Society said: "Alzheimer's disease, a most common disease, is likely to be caused by a combination of genetic disosition , lifestyles and life events. Many genes are probably involved. Question: Why does the discovery of the longevity genes mean a lot? - Because it can bring great benefits to scientific labs. - Because it can help people change their unhealthy genes - Because it helps produce a drug that can make people live longer. - Because it will help scientists build up a new branch of biology.
Because it helps produce a drug that can make people live longer.

Read the following article and select the best answer. Article: Fly Alone for the First Time I began flying lessons at the age of 14; but the Federal Aviation Administration requires you to be 16 before you make flight by yourself. So I had to wait for two long years until I could fly a plane by myself. I used that time to master the basic maneuvers of flying. I learned emergency procedures and practiced hundreds of takeoffs and landings until I could land the airplane smoothly without bouncing it down the runway. It wasn't always easy, and many times I would come home feeling discouraged and thinking maybe everyone was right - I would never learn to fly, but by the next day, I was always eager to try again. On the day of my 16th birthday, I made my first solo flight, which meant I could finally fly alone. The night before, my dad, who was my flight instructor, explained that the winds were forecast to be high. He said if we were in the air by dawn, the winds would probably be calm enough for me to solo. The next morning it was cold, but the sky was completely clear, and the winds were calm. I expected my dad to stay in the plane for at least three takeoffs and landings. But after the first one, he told me to pull off the runway, and he got out of the plane. I was alone. As I climbed higher and higher, the world began to change. Everything on the ground became _ . Houses, cars, and all looked like tiny toys that could fit in the surface of my hand. I made three takeoffs and landings that day. Each landing was perfect. It was one of the happiest days of my life. Today, as a flight instructor, I stand alongside runways watching as my own students take to the sky on their first solo flights. I understand the joy faces, which always bring me back to that day when my dream came true. I learned that no matter how people tell you that you can't do something, if you believe in yourself, you can succeed. Question: What lesson does the author learn from his experience? - Be confident and you will succeed. - Be responsible and you can grow up. - Give up something and you may win more. - Think hard and you can achieve your dream.
Be confident and you will succeed.

Q: Read the following article and select the best answer. Article: Louis Armstrong had two famous nicknames. Some people called him Bagamo. They said his mouth looked like a large bag. Musicians often called him Pops, as a sign of respect for his influence on the world of music. Born in 1901 in New Orleans, he grew up poor, but lived among great musicians. Jazz was invented in the city a few years before his birth. Armstrong often said,"Jazz and I grew up together." Armstrong showed a great talent for music when he was taught to play the cornet at a boy's home. In his late teens, Armstrong began to live the life of a musician. He played in parades, clubs, and on the steam-boats that travelled on the Mississippi River. At that time, New Orleans was famous for the new music of jazz and was home to many great musicians. Armstrong learned from the older musicians and soon became respected as their equal. In 1922 he went to Chicago. There, the tale of Louis Armstrong begins. From then until the end of his life, Armstrong was celebrated and loved wherever he went. Armstrong had no equal when it came to playing the American popular song. His cornet playing had a deep humanity and warmth that caused many listeners to say,"Listening to Pops just makes you feel good all over."He was the father of the jazz style and also one of the best-known and most-admired people in the world. His death, on July 6 , 1971, was headline news around the world. Question: Which would be best title for the text? - The Invention of the Jazz Music - The Father of the Jazz Style - The Making of a Musician - The Spread of Popular Music
A: The Father of the Jazz Style

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Read the following article and select the best answer. Article: A warm blanket is the ideal sleep aid for a freezing winter night. The right blanket can warm your bones but the wrong one can affect your sleep. I asked experts for advice on picking the perfect blanket for a good night's sleep. Here's what they told me. When it comes to sleep temperature, experts recommend following the principle: not too cold, not too hot, but just right. "People seem to sleep best at temperature between 62 and 70 degrees F," says Dr. Alice Hoagland. When the surrounding temperature falls too low, it can _ you from sleep. A good blanket helps drive the coldness away. At the other extreme, overheating yourself can affect your sleep as well. "Core body temperature typically drops during the first four hour's of sleep," says Dr. Hoagland. This decline in body temperature helps you fall asleep and stay asleep. "In medical care, weighted blankets are one of our most powerful tools for helping people who are anxious, upset, and possibly losing control," says Dr. Karen Moore. These special blankets are filled with weighted pellets. Weighted blankets are also marketed for general use as an aid to sleep and relaxation. Like a firm hug, weighted blankets help us feel safe." This is the reason why many people like to sleep under a blanket even in summer. "If you want to try this type of blanket, the best weight depends on your body size and personal preference. However, 15 to 30 pounds is typical for adults," Moor says. She adds that weighted blankets are not recommended for those recovering from surgery. "People can also have serious preferences for a particular blanket," says Dr. Hoagland. "Regularly using a favorite blanket for sleep can help to develop a conditioned response so that sleep is quicker." In fact, many sleep centers ask patients to bring their own blanket and pillow from home, which helps them fall asleep more easily. Question: The author wrote the passage mainly to tell us _ . - the importance of blankets - how to choose the perfect blanket - different materials used to make blankets - the history and usage of blankets
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how to choose the perfect blanket