*Question*
Read the article and select the best answer. Article: In the past,when people had problems,they went to their families or friends to get advice.Today it is possible to get advice from radio shows.TV programs or telephone hot lines,too.A hot line is a telephone line that offers a direct way of getting in touch with advicers.Most hot lines are completely anonymous --callers do not have to say their names or telephone numbers.Most hot lines are usually free,too.Callers do not have to pay for their advice or the phone calls--even if the calls are long distance.At some hot lines,the advicers are volunteers.Other hot lines pay their advicers for their work.Usually the advicers are full-job people with years of education and experience,but sometimes the advicers have only taken a short class before starting to work on the hot line.All the advicers listen to the people and help them solve their problems. Question: The advicers working at hot lines _ . Options: A: are not all paid B: have all been trained for a short time C: are all volunteers D: all have years of education and experience
**Answer**
A

*Question*
Read the article and select the best answer. Article: Cloud seeding is a method of artificially causing clouds to produce precipitation in the form of rain or snow.Cloud seeding has also been used in attempts to modify the severity of hail storms and hurricanes.The effectiveness of cloud seeding remains controversial .but it continues to be used in some regions to try to increase rainfall for agriculture and to build snow packs for water supplies and power production. Cloud seeding was developed by American scientists Irving Langmuir and Vincent Joseph Schaefer during and after World War II.Their work began as an effort to learn more about the buildup of ice on airplane wings, and eventually led them to attempt to create rainfall by releasing several pounds of crushed frozen carbon dioxide into a cloud from an airplane.In this form, the carbon dioxide is called dry ice.On November 13, 1946, the technique appeared to produce snow directly under the cloud; the snow then turned to rain as it fell to the ground. For their experiment, Langmuir and Schaefer selected a supercooled cloud, one in which the water droplets remain liquid in subfreezing temperatures.Their theory was that small grains of dry ice falling through the cloud would cause tiny droplets of water vapor in the cloud to freeze into crystals that attracted more water vapor.Their theory proved to be correct and eventually the crystals became heavy enough to fall from the cloud as snow.As the snow reached the warmer temperatures closer to the ground, it melted and became rain. Another scientist, Bernard Vonnegut, produced a method of cloud seeding using silver iodide .He used particles of silver iodide because its crystal structure resembled that of ice in clouds.Silver iodide also had practical advantages over frozen carbon dioxide It could be stored at room temperature and did not require an airplane as a delivery mechanism.Instead, silver iodide crystals could be fired by cannons high into the air, where wind carried them into the clouds. Question: Bernard chose silver iodide as a method of cloud seeding because _ . Options: A: it is much cheaper than dry ice B: it can be stored at any rooms C: it can be sent into clouds by wind D: it is similar
**Answer**
D

*Question*
Read the article and select the best answer. Article: Fred Michel is one of 7.2 million Americans who moonlight. Once a week, after his day job as medical director of a mental health center, the 40-year-old psychiatrist heads to a part-time job at a treatment center for young people. Twice a month, he travels three hours to another teenage treatment center. Last year, 5.4 percent of the American workforce held second jobs, according to the US Labor Department, and that looks set to increase this year. Many workers like the safety that moonlighting provides, says Carl Hausamn, the writer of "Moonlighting: 148 Great Ways to Make Money to the Side". The information from the US Labor Department shows that 40 percent of US moonlighters in 1997 took a second job to meet household expenses or pay off debts. Others save money or buy some special things. People also take second jobs with an eye to the future--wanting to try out a new field or gain experience. Michel started moonlighting when medical systems were unstable . He wanted to make sure he wasn't tied to one system that ended up failing. Just as the purposes for moonlighting are different, the moonlighters cross all age and racial groups. And they work in a variety of industries---no longer just service,office and sales jobs. As its name means, moonlighting still occurs mostly at night. And that results in some pressures. Chief among them is time. Full-time employers could misunderstand, too. Some companies do not allow after-hour work because they fear it will affect their employees' 9-to-5 performance. "The primary employer is saying, 'Wait, I'm paying you for the sharp, fresh, energetic you,'" says Tom Gimbel, president and founder of LaSalle Staffing in Chicago. "If you're burning yourself at both ends, it's going to show." Still, the good done to the moonlighters can be great. Besides extra income, moonlighters enjoy variety , freedom and chance to do something new. They also may find their part-time jobs strengthen what they do full time. Besides, "it's fun," Michel says. Not only do his... Question: The reason why Fred Michel began to moonlight is that _ . Options: A: he found it exciting to do a part-time job B: he feared he would lose his present job one day C: he needed to make ends meet with more money D: he felt more and more pressure from his employer
**Answer**
B

*Question*
Read the article and select the best answer. Article: Why do people buy art? To answer this question, ask yourself what your reasons are for thinking of getting a piece of art. An artwork can cost a large amount of money, but if it meets your needs, it's worth every penny. People buy art for many reasons. Many people buy an artwork simply because they like it, even if it is by an unknown artist. Art, as long as you enjoy it, is never a waste of money. Art is for enjoyment. Art is meant to be shown. Don't ever feel pressured into buying something you won't enjoy looking at day after day, no matter what other people may say. Don't buy something that doesn't attract you just because it is trendy, or because the artist is famous, or because you have been advised that the artwork will make a good investment. If you don't like the artwork at all, don't buy it! Art improves your environment. Have you ever noticed that all beautiful homes have art as an integral part of the decoration? Art lends life and color to otherwise plain and ordinary walls. A well thought--out art collection will help create a unique atmosphere in your home and make it more attractive. Art makes a statement. The kind of art you surround yourself with says much about your personality tastes and values. _ . Art enriches your life. Love--even the love of a work of art--contributes to healthier living and a longer lifespan . Art should enrich your life. Otherwise, why do you spend precious time and resources on it? Just remember to select something which will appeal to your tastes, and keep to a sensible budget. Good art needn't cost an arm and a leg. Happy art collecting! Question: What's the purpose of the passage? Options: A: To advise us to buy an expensive artwork. B: To remind us to be sensible when buying an artwork. C: To teach us how to choose works of art. D: To explain the benefit of art to people.
**Answer**
D