Read the following article and answer the question. Article: VOIP stands for Voice Over Internet Protocol. It is also referred to as IP Telephony. It is another way of making phone calls, though the 'phone' part is not always present any more, as you can communicate without a telephone set. VOIP is especially popular with long distance calls. The main reason for which people are so massively turning to VOIP technology is the cost. VOIP is said to be cheap, but most people use it for free. Yes, if you have a computer with a microphone and speakers, and a good Internet connection, you can communicate using VOIP for free. There are basically three ways of using VOIP. One is to have a PC on both communicating sides; another is to have a phone on one side and a PC on the other and the third is to have two phones. VOIP is a ly new technology and it has already achieved wide acceptance and use. There is still a lot to improve and it is expected to have major technological advances in VOIP in the future. It has so far proved to be a good candidate for replacing the POTS (Plain Old Telephone System). It, of course, has drawbacks along with the numerous advantages it brings; and its increasing use worldwide is creating new considerations surrounding its regulations and security. The growth of VOIP today can be compared to that of the Internet in the early 90's. The public is getting more and more conscious of the advantages they can get from VOIP at home or in their businesses. Advertising campaigns, which are present everywhere on the net, are contributing a lot towards the popularization of VOIP which not only gives facilities and allows people to save, but also producing huge income for those who dived early into the new phenomenon. Question: The author writes the passage mainly to _ . Answer:
OPTIONS:
- ask readers to buy the new type of production.
- tell us how fast the modern technology is developing.
- introduce a new type of IP technology---VOIP.
- teach the readers how to use VOIP.

Answer: introduce a new type of IP technology---VOIP.

Read the following article and answer the question. Article: An eighteen-year-old high school student from Utah won the top prize in the Intel Science Talent Search in the United States. The winner received a computer and a scholarship for a college education. More than 1,500students from across the country entered projects in the competition this year. Their research included chemistry, medicine, physics, mathematics, engineering, and computer science-almost every area of science. Forty students were invited to Washington, D.C. for the final judging. A group of scientists judged them on their research abilities, critical thinking skills and creativity. The judges also questioned the students about scientific problems before deciding on the winners. The top winner received 100,000 dollars for college. Shannon Babb of American Fork High School studied the water quality of tile Spanish Fork River in Utah for six years. She found that people have a harmful effect on the river through human activity, including agriculture. And she suggested ways to improve the water quality in the future. These include educating the public not to put household chemicals down the drains , which lead to the river eventually. Seventeen-year-old Yi Sun of the Hanker School in San Jose, California, earned the second place. He won a 75,000-dollar scholarship for new discoveries about a mathematical theory known as random walks. His work could help computer scientists and chemists. Yi Sun was born in China. The third-place winner was also seventeen and born in China. Yuan "Chelsea" Zhang of Montgomery Blair High School in Rockville, Maryland, won a 50,000-dollar scholarship. She researched the molecular genetics of heart disease. Her findings could aid the development of new medicines. The Intel Science Talent Search is the oldest science competition for high school students in the United States. It is 65 years old this year. Past winners have gone on to receive six Nobel prizes and other top honors in science and math. Question: What is the text mainly about? Answer:
OPTIONS:
- Three winners' contributions to science and math.
- Three Chinese students won the Science Talent Search.
- Great rewards were given to winners in the competition.
- Winners of the Intel Science Talent Search in the US.

Answer: Winners of the Intel Science Talent Search in the US.

Read the following article and answer the question. Article: Welcome to Harry Potter and the case of the teenage depression. The popular series is being used in a book designed to help teenagers deal with feelings such as anger and depression. Australian psychologist Dr Julie-Anne Sykley has written the book Harry Potter Power , which uses ideas and characters from British author J.K. Rowling's series to help teenagers develop a happy feeling. Ms Sykley said she had been working on the book for 10 years to help young people feel happier , healthier and more powerful. "I found there was a lot of special hidden material in the (Harry Potter) books and lots of powerful psychological messages that could help young people," she said . " I sense _ really need some help and guidance to improve their resilience and help them make better choices in their life ." Harry Potter fans would be familiar with characters in Ms Sykley's book. " The magical hippogriff creature , for example , was used as a symbol of hope in Harry Potter Power," she said . Dementors were depressing spirits used in her book to help teenagers learn how to prevent mental illness , Ms Sykley said . "It's a great way to introduce the idea of depression ," she said . " Puzzles, games and secret messages were designed to keep learning about depression and anger interesting and informative," she said . Although Harry Potter Power was marketed to young people aged 12 and older , Ms Sykley said it was suitable for adults and professionals such as teachers and psychologists. Many Harry Potter fans have welcomed the book , which is published by Interactive Publications , and is now on sale . Question: What's the purpose of Ms Sykley's book ? Answer:
OPTIONS:
- To explain why young people like Harry Potter.
- To help teenagers with their mental health problems.
- To let more readers know about the Harry Potter series.
- To discuss whether J. K. Rowling's works are suitable for parents.

Answer:
To help teenagers with their mental health problems.