Alsten Chase has written a book about Yellowstone National Park. He is worried about the damage the fires can do to the park. He is also concerned about the park rules. These rules say that nature should decide what happens to the park. Alsten also writes that the elk herd has grown too big. The elks walk on the riverbanks. They eat the new grass and roots of baby trees. The beavers need the trees to build dams. The dams raise the water levels. Higher water levels put more water into the soil. Moist soil helps plants grow faster. The plants offer homes and food to other animals. Chase thinks that the park rules would work only in a park with natural settings. He believes that Yellowstone has had an artificial setting for a long time. The native people left. The wolves were taken away and other animals were removed.The areas of land were fenced off and other animals added.He thinks the park rules that let herds grow too big and the fires burn are hurting the nature of the park. The park manager thinks the rules are good and that the park will be fine. Chase thinks the way the people run the park should be changed. In Chase's opinion, too many elks in the park will _ . A) cause great fires B) break the balance of nature C) destroy the dams D) do no damage at all
B
(Question)
Every so often, birds, just like humans, do what it takes to feel really, really good. The bird version is to sit on an anthill so that hundreds of ants climb all over their bodies, or even better, some birds pick up mouthfuls of pressed ants and rub themselves all over. Afterwards, the birds either eat the ants or set them free. Scientists call this "anting." It's a common bird practice, and is especially done by the smarter birds. Ravens do it. Magpies do it. However, birds aren't the only animals that use anting --- squirrels, cats, and hedgehogs have all been observed doing the same sort of thing! Why birds "ant" is something of a mystery, but one thought is acceptable. Ants have defensive secretions , chemical weapons they use to fight off other insects and bacteria. So pressed ants help the birds drive the insects away. Similarly, if you cover your body with them, you can move through the forest without worrying about being bitten by insects. Plus, ants are cheap. They are around. However, we have a better explanation. Birds "ant" a lot in spring and summer. For many birds, that's the season for birds to change feathers. So maybe ant secretions are like bath oil; they comfort the skin during feather replacement. A British scientist once declared "the purpose of anting the stimulation and comfort of the body," and that the general effect "is similar to that gained by man from the use of outside stimulants, and perhaps also smoking." And like cigarettes, anting can become a habit. Another study compares anting to "the human habits of smoking and drug taking," and says, "it is enjoyed for the feeling of excitement it results in. So once experienced, it is difficult to stop." That's why you often see mother birds shouting at their babies who come near their first anthill. "Stay away from there, child... Don't touch those ants!" they cry. I don't speak Raven. Or Magpie. But I have been a parent. So some things I know. It is implied in the text that _ . A) only adult birds use anting B) the author knows a lot about birds C) birds can become addicted to anting D) too much anting does harm to birds' health
(Answer)
C
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Ans: A
Football is America's most popular sport, and by football I don't mean soccer. American football is a unique sport with its own rules, regulations, and fans. Being a football fan means something different than being a fan in other sports; football fans have their own culture and customs. Since football is a violent, contact sport, its games are played infrequently. Usually fans have to wait an entire week before they can see their favorite team play again. This means that football fans take advantage of the days they can cheer for their teams. One custom that football fans have is called tailgating. Tailgating describes when a big group of people gets together before a game and has a small party. Tailgating usually lasts a few hours and involves lots of good food and beverages. It is most common to grill food at a tailgate, especially hamburgers, hotdogs, sausages, and any other type of meat. It is not unusual to see people drinking lots of beer, throwing footballs around, talking to (or arguing with) other fans, etc. Tailgating happens for other sports too, but it is much more important to football fans. Sports fans in every country have unique and strange ways to celebrate their favorite teams and players. Football in America is no different. What is tailgating? A) When a group of people celebrates because their favorite team won a game. B) A party that only some fans are invited to. C) A pre-game activity where people gather together and enjoy themselves. D) A custom where people eat, drink, and party during a game.
C