Read the following article and select the best answer. Article: Last night's meteor shower left many people in the community dissatisfied and demanding answers. According to Gabe Rothschild, Emerald Valley's mayor, people gathered in the suburbs of the city, carrying heavy telescopes, expecting to watch the brightly burning meteors passing through the sky. What they found instead was a sky so brightened by the city's lights that it darkened the light of the meteors passing overhead. "My family was so frustrated," admitted town resident Duane Cosby, "We wanted to make this an unforgettable family outing, but it turned out to be a huge disappointment." Astronomers--scientists who study stars and planets--have been complaining about this problem for decades. They say that light pollution prevents them from seeing objects in the sky that they could see quite easily in the past. They call on people and the government to take measures to fight against it. There is yet a population besides professional and amateur star observers that suffers even more from light pollution. This population consists of birds, bats, frogs, snakes, etc. For example, outdoor lighting severely affects migrating birds. According to the International Dark-Sky Association, "100 million birds a year throughout North America die in crashes with lighted buildings and towers." Countless more animal casualties result from the use of artificial lighting. Clearly, people enjoy the benefits of lighting their evenings. But some scientists think it can be harmful for humans, too. They worry that exposure to light while sleeping can increase a person's chances of getting cancer. Emerald Valley is only one community that is becoming aware of the negative effects of light pollution. For years, Flagstaff, Arizona, has enforced lighting regulations in its city in order to assist astronomers at the Lowell Observatory. Similar efforts have been made worldwide, and a movement is underway to remind us to turn off lights when we are not using them, so that other creatures can share the night. Question: Lighting regulations in Flagstaff, Arizona are put into effect to _ . - lessen the chance of getting cancer - create an ideal observation condition - ensure citizens a good sleep at night - enable all creatures to live in harmony
create an ideal observation condition

Read the following article and select the best answer. Article: Founded in 1966,Seacamp,the first program dedicated to the education of youth in marine sciences,is the result of a cooperative effort of parents,scientists,businessmen and camp leaders.Preservation practices and a respect for the marine environment are the philosophy of the Seacamp. Seacamp's tropical marine location in the lower Florida Keys enables it to offer a truly unique marine science program.This program is the heart of Seacamp.Young scientists participate in a variety of courses under the guidance of academically trained marine science instructors and biologists.All science activities include studies in both the field and the laboratory.Each session,140 to 160 campers come to Seacamp,mostly from the US,but also from across the world.There are about 30 international campers each summer from an average of twelve countries.Many Seacamp program graduates have gone on to careers as environmental educators and marine scientists. One of Seacamp's unique aspects is that campers create their schedules.In addition to science classes,campers choose from a variety of programs to ensure that there is something interesting and exciting for everyone.Campers interested in journalism may work on the camp newspaper,SEASCOPE,which is published periodically during camp sessions.Arts activities are also included.Photography allows campers to take home memories of friends,wildlife,and underwater experiences. Seacamp teaches the fun and skills of sailing.It's an excellent way for future marine scientists to become familiar with the winds,tides and currents that are of primary concern in oceanography.Basic Red Cross certification is offered to beginners in sailing.The Red Cross course in advanced lifesaving is taught at Seacamp.The course is designed to increase the campers' ability to recognize and avoid dangerous water conditions and practices and to use selfrescue skills to get out of dangerous situations. Parents may bring campers by car to Big Pine Key.Counselors also meet participants at the Miami International... Question: The main purpose of the text is to _ . - attract the young to Seacamp - present Seacampers' experiences - introduce the programs of Seacamp - explain the aim of Seacamp
attract the young to Seacamp

Read the following article and select the best answer. Article: One of the serious problems for today's society is who should be responsible for the old and how to improve their lives. It is not only a financial problem but also a question of the system we want for our society. I would like to suggest several possible solutions to this problem. First,employers should take the responsibility for their retired employees. To make this possible,a percentage of profits should be set aside for this purpose. But when a company must take lifelong responsibility for its employees,it may suffer from a commercial disadvantage due to higher employee costs. Another way of solving the problem is to return the responsibility to the individual. This means each person must save during his working years to pay for his years of retirement. This does not seem a very fair model since some people have enough trouble paying for their daily life without trying to earn extra to cover their retirement years. This means the government might have to step in to care for the poor. In addition,the government could take the responsibility for the care of the old. This could be financed through government taxes to increase the level of pensions. Furthermore,some institutions should be created for senior citizens,which can help provide a comfortable life for them. Unfortunately,as the present situation in our country shows,this is not a truly viable answer. The government can seldom afford to care for the old,particularly when it is busy trying to care for the young. One further solution is that the government or social organizations establish some workplaces especially for the old where they are independent. To sum up,all these options have advantages and disadvantages. Therefore,it is reasonable to expect that some combination of these options may be needed to provide the care we hope to give to the old generations. Question: What is the writer's main purpose of writing this passage? - To point out the need for government supporting for old people. - To make general readers aware of the problems of the retired people. - To discuss some possible solutions to an important social problem. - To instruct the retired people on how they can have a happier life.
To discuss some possible solutions to an important social problem.