Read the following article and answer the question. Article: Parents might tell older children to "Act your age". But some researchers say that is what persons from thirteen to nineteen years old are doing. While teenagers can look all grown up, studies have shown that their brains are still developing. How much this explains their behavior, though, is a subject of debate. Jay Giedd of America's National Institutes of Health is a leader in this area of research. Doctor Giedd has been studying a group of young people since 1991. They visit him every two years for imaging tests of their brains. He says considerable development continues in young people from the teenage years into the twenties. A part of the brain called the dorsal-lateral prefrontal cortex appears especially undeveloped in teenagers. Researchers believe that this area controls judgment and consideration of risk. So, its underdevelopment may explain why young people seem more willing to take risks like driving too fast. Laurence Steinberg is a psychology professor at Temple University in Philadelphia. He says stronger laws and stronger parental control are needed to protect teens from themselves. That includes raising the age for driving. He says research shows that teenage brains are not fully equipped to control behavior. Other researchers, however, say there is not enough evidence to make a strong case for such findings. Psychologist Robert Epstein is a visiting scholar at the University of California in San Diego. Mr. Epstein notes that teen behavior differs from culture to culture. He says behavior depends for the most part on socialization. He believes that teenagers will demonstrate  better, safer behavior if they spend more time with adults, and are treated more like them. But is that always true? Mike Males works at the Center on Juvenile and Criminal Justice in San Francisco. He suggests that all of this talk lately about brainless teens could be an attempt to take away attention from the reality. Writing in the New York Times, he says it is middle-aged adults whose behavior has worsened. In his... Question: If your parents ask you to act your age, they really mean to advise that you   _  . Answer:

Answer: behave yourself


Read the following article and answer the question. Article: Think of some of your favorite singers. When you listen, they can make you happy or sad, peaceful or angry. They can make you relax or want to get up and dance. Gifted singers have the power to affect us in many ways -- emotionally, physically and mentally.  But becoming a great singer isn't as easy as listening to one. It takes practice, devotion and strong lungs! Just ask the well-known American opera star Carol Vaness.  At the Metropolitan Opera in prefix = st1 /New York Citywhere she often sings, Carol's voice must be loud enough to be heard by four thousand people. It must reach every person in the theater, without a microphone, even when she's singing softly. The reason Carol can project her voice that far is the way she breathes. "When you breathe, it's like a swimmer taking a deep breath before going underwater," Carol explains. "You have to take a lot of air into your lungs." According to Carol, the main difference between pop singing and opera is "how you breathe, how much air you take in, and how you control it coming out. Regular singing is more like speaking, and it's a lot softer. When I sing for children, they're often surprised by how the vibrations strike their ears -- like waves on a beach, " Carol says. "In opera, the air doesn't just go out of your mouth -- it vibrates in your chest, the way a guitar vibrates when it's played. " Ever since she started piano lessons at the age of ten, Carol has loved music. As she got older, she decided to become a music teacher. When she went to college, she took singing lessons as part of her studies. Her voice teacher discovered that nineteen-year-old Carol had an exceptionally beautiful soprano voice - the highest singing voice for women.  Carol decided to make opera her goal, not only because she loved to sing but also because she loved the drama. Opera is a play in which the characters sing the words instead of speaking them. The stories of opera can be tragic or comical. They can be personal stories about two people falling in love or grand stories... Question: What is the best title for this passage? Answer:

Answer: An Opera Star


Read the following article and answer the question. Article: One day a few years ago a very funny thing happened to a neighbor of mine. He is a teacher at one of London's big medical schools, He had finished his teaching for the summer term and was at the airport on his way to Russia to give a lecture. He had put a few clothes and his lecture notes in his shoulder bag, but he had put Rupert, the skeleton   to be used in his lecture, in a large brown suitcase  . At the airport desk, he suddenly thought that he had forgotten to buy a newspaper. He left his suitcase near the desk and went over to the shop. When he got back he discovered that someone had taken his suitcase by mistake. He often wonders what they said when they got home and found Rupert. Question: Why did the teacher put a skeleton in his suitcase? Answer:

Answer: He needed it for the lecture he was going to give.


Read the following article and answer the question. Article: Of all nature's disasters, forest fires are often considered the most frightening. Moving at lightning speed, huge walls of flames can burn acres of land in just a few minutes. And although technology, including the use of tire-retardant chemicals, has greatly helped the fight against forest fires, they still take great damage. According to the National Interagency Fire Center, the fire season last year was the worst on record in terms of the number of fires and acres  burned. There were 96.385 fires and9,873429 acres affected by fire in a year that was 125% more destructive  than the 10-year average . These fires cost the federal govemment $1.5 billion to fight, and this figure does not include the money spent by local and state govemments as part of the effort. Fires in the southern states represented half of the national total last year. with Texas. Oklahoma and Arkansas being home to an usually high amount of activity. Wildfire have also taken place in Western states such as California, Colorado. and Alaska throughout the past 10 years. It is said that two-thirds of forest fires are started accidentally by people. almost one quarter are purposely set, while lighting causes 10%. Forest fires can have advantageous effects. Charcoal  enriches soil, and some plant species  grow well after. The cones of the jack pine tree, for example, will not spread their seeds unless there is heat. Douglas fir trees grow best in open sunlight areas after fire. Question: Almost 25% forest fires are set  _  . Answer:

Answer: