Hawaii is an important trading center and about six million tourists visit there every year. With all that traffic in and out, exotic species have plenty of opportunities to reach the islands. According to biologists, exotic species are the number one threat to the state' s economy, environment, and way of life. The question in Hawaii is, can the invaders be stopped? Quarantines are one way to do this. Quarantine is the process of isolating animals or products. In Hawaii, pet dogs and cats coming into the state remain in a special holding facility for four months to make sure they don' t have rabies( ) Many agricultural products are also quarantined to see if they are carrying insect pests or plant diseases. Inspection is a second way to stop biological invaders. At airports, borders, and shipping ports, inspectors examine passengers and their baggage to see if they are carrying exotic species. The inspectors also destroy fruits, vegetables, or other goods that might be carrying harmful pests or diseases. Specially trained dogs also smell goods in the ship for exotic species. What if an exotic species slips by inspectors? Then efforts are made to control the invader. In Hawaii,government agencies control invaders by setting livetraps around wildlife shelters and other places. At Haleakala National Park employees have built miles of fences to keep out exotic pigs and goats. For years these animals ate and walked over native rain forest plants, hut the fences have helped reverse( )this damage. Now native plants grow in places that were bare rock only a short time ago. In some cases biological control helps to solve the exotic species problems. It is the science of controlling one invader with another. In the early 1900s, several exotic predators were imported to Hawaii to eat a harmful exotic pest called the sugarcane leafhopper. The insect was destroying 70,000 tons of sugar a year ,but the predators brought it under control. The efforts of these scientists and other people are vitally important. In Hawaii... This passage is mainly about _ . A) the methods for preventing exotic species B) the effects of exotic invasion on Hawaii C) the problems faced by the Hawaiian economy D) the role of biologists in controlling native species
A
Much of the world does have electricity, though, and electricity makes using the Internet possible. Now that so many have Web access, you might have noticed that people don't write letters to each other very often. But that doesn't mean they have stopped keeping in touch. "Key pals," who use a computer keyboard and e-mail account instead of a pen and paper, still continue the pen pal tradition today. E-mail and handwritten letters have different advantages. With e-mail, your pen pal can receive your note almost instantly , and you can attach digital photos. Letters take longer to arrive, but you can include stickers, pictures, or drawings. Maybe you want to know more about what having a pen pal is like before you jump into the experience. If so, there are plenty of books that can give you a taste of different pen pal adventures. Look for them at a bookstore or library. There are things to remember when communication with pen pals, especially in the digital age: Make sure to share all letters and e-mails with your parents so they know you are safe. If something seems _ , stop writing letters. Never meet a pen pal in person unless a grown-up is with you. And, of course, have fun! Your pen pal could become your new best friend. Or a pen pal relationship could bring you closer to someone you already know. With a pen pal, you can have your own taste of far-away places, someone to share your own discoveries with, and the adventure of opening your mailbox to find a letter in it just for you. When communicating with a pen pal, you should _ . A) keep all the pen pal's letters and e-mails in private B) meet him/ her with one of your classmates C) be sure you are safe at any time D) share whatever you experience with him/ her
C
Q: When newspapers and radio describe the damage caused by a hurricane named Hazel, girls named Hazel are probably teased by their friends. To keep out of trouble, the Weather Bureau says,"Any _ between hurricane names and the names of particular girls is purely accidental." Some women became angry because hurricanes are given their names, but many other women are proud to see their names make headlines. They don't even care that they are the names of destructive storms. Because more women seem to like it than dislike it, the Weather Bureau has decided to continue using girl's names for hurricanes. In some ways a hurricane is like a person. After it is born, it grows and develops, then becomes old and dies. Each hurricane has a character of its own. Each follows its own path through the world, and people remember it long after it gone. So it is natural to give hurricanes' names, and to talk about them almost if they were alive. Public opinions make the Weather Bureau _ . A) consider the disagreement of some women B) go on naming hurricanes after women C) name hurricanes after men D) look for a new method to name hurricanes
A: B
Q: OSLO -- Excited with pride, Norwegians sang in the streets of Oslo on Sunday, celebrating Norway's National Day and the country's Eurovision Song Contest victory. Hundreds of Norwegians sang along to Alexander Rybak's winning song Fairytale as they walked in the country's traditional National Day parade celebrating the Norwegian constitution. Alexander Rybak -- called "Alexander the Great" by the Norwegian media -- won a great victory in the Eurovision Song Contest (ESC) by gaining the most votes in its 53-year history in Moscow on Saturday. Alexander has played violin and piano since he was five years old, and he also composes his own music and sings. In 2006 he won the Norwegian talent show Kjempesjansen with his own song Foolin. Alexander has performed with one of the world's most celebrated violinists, Pinchas Zukerman, won the Anders Jahres Culture Price and has been the concertmaster for Norway's largest symphony orchestra for youths, Ung Symfoni. Norwegian Prime Minister Jens Stoltenberg said there was clearly something special about the 23-year-old and his folk music. "This is a _ performance by a young and talented musician," Stoltenberg said in a statement. Rybak is expected to draw a large crowd of fans to Oslo's Gardermoen airport when he arrives next Sunday, after having invited all his countrymen from the stage in Moscow. With Rybak's win, Norway will host next year's Eurovision finals, a show that reaches a television audience of over 100 million people. Norway's Minister of Culture, Trond Giske, promised that Norway would put on a splendid show next year but without spending as much as Moscow, which spent 24 million euros this year. "I don't think that is necessary," he told national broadcaster NRK. The win was Norway's third. The Nordic country also won the Eurovision Song Contest in 1985 and 1995. The main idea of the text is that _ . A) the Eurovision Song Contest belongs to the world B) National Day is being celebrated in Norway C) Crazy fans expect to meet their idol at the airport in Norway D) Norway celebrates a Eurovision win on National Day.
A: D