Many people say dolphins are very intelligent. They seem to be able to think, understand, and learn things quickly. But are they smart like humans or more than cats or dogs? Dolphins use their brains differently from people. But scientists say dolphin intelligence and human intelligence are similar in some ways. How? Fact 1: Talk to me Like humans, every dolphin has its own "name". The name is a special whistle. Each dolphin chooses a specific whistle for itself, usually by its first birthday. Actually, scientists think dolphins, like people, "talk" to each other about a lot of things, such as their age, their feelings, or finding food. And, like humans, dolphins use a system of sounds and body language to communicate. But understanding their conversations is not easy for humans. No one speaks "dolphin" yet, but some scientists are trying to learn. Fact 2: Let's play Dolphins are also social animals. They live in groups, and they often join others from different groups to play games and have fun--just like people. In fact, playing together is something only intelligent animals do. Fact 3: Fishermen's helper Dolphins and humans are similar in another way: both make plans to get something they want. In the seas of southern Brazil, for example, dolphins use an interesting strategy to get food. When fish are near a boat, dolphins show signs to the fishermen to put their nets in the water. Using this method, the men can catch a lot of fish. What is the advantage for the dolphins in doing so? They get to eat some of the fish. What is the passage mainly about? A) Dolphins are smarter than humans. B) Dolphins make friends with humans. C) Dolphins teach humans to speak "dolphin". D) Dolphins and humans are similar in some ways.
D
(Question)
The unknown world's mystry The sea is the biggest unknown part of our world. It covers seventy-one percent of the earth. There is still much to be discovered about this vast blanket of water. If the waters of the ocean could be removed, the sea floor with its wide valleys, irregular mountains and rivers in the sea would be an unbelievable sight. Tourism under the deep blue sea Tourists can now explore the world beneath the waves without ever getting wet. From tourist submarines to underwater dining, undersea tourism is making a big splash. Tourist submarines The popularity of submarine tours has grown rapidly in the last decade. Now, tourist submarines operate in more than 20 locations worldwide, including the waters around Okinawa and Taiwan's Green Island. The submarines carry nearly 2 million tourists each year. Large windows offer passengers spectacular views as the submarines explore colorful coral reefs and sunken ships. Most one-hour tours cost about US $80. Under water dinning For a more upscale experience, tourists can enjoy fine dining under the sea. Last summer the Hilton Maldives Resort opened the world's first underwater restaurant, Ithaa. Diners walk down a staircase into the restaurant, which rests 35 feet beneath the waves of the Indian Ocean. Transparent walls surround the dining area, and you can treat guests to a panoramic ocean view. But this excellent view doesn't come cheap. The tasting menu costs US $200 per person. Be sure to make reservations early, too. The restaurant seats only 14 people. The walls of the restaurant Ithaa are most probably made of_. A) stone B) brick C) glass D) steel
(Answer)
C
Ques: Mobile Phone Manners Mobile phones have changed the way we communicate;they have also brought about problems in phone manners.Gaik Lira, a Singapore-based advice has some advice on phone manners. When dealing with missed calls,the person being.called should return the call."Calls should be returned as soon as possible, and no later than the following day. Anything later than that,and an apology or a reason for the delay should go with the call." Text messages should be kept short and to the point.If they go beyond four or five lines,call or e-mail instead."The use of short forms should be among family members and friends,never in a business situation." Speak in a low voice as if you were talking to someone next to you.If the connection is bad,don't raise your voice in order to be heard,simply move to another place where the connection may be better.And if that doesn't work,tell the caller to call you back or offer to call at a later time. When a conversation is cut off due to a bad connection,the person who started the conversation should call back."It may be inconvenient for the other person to return the call,especially if it's an unlisted number,or an overseas call." When running late for a date or meeting,it is acceptable to text to inform that you'll be delayed.Messages should be apologetic."A message like'Sorry.Will be about 30 mi- nutes late due to flight delay'is considered polite and thoughtful." Taking calls during meetings is only acceptable if you have informed the chairperson that you are expecting an urgent call.If you get an unexpected but urgent call,apologize to those present and offer a quick explanation as to why you have to take that call.Then leave the room to contioue your phone conversation. What should you do if you get an ordinary call during a meeting? A) Apologize to the people present and then answer the call. B) Cut the call off at once and call back after the meeting. C) Answer the call and apologize to the chairperson later. D) Leave the room immediately to answer the call.
Ans: B
Question: We live in a sweet world. The average American kid eats more than 20 teaspoons of sugar per day, and adults eat 50% more sugar today than they did in the 1970s. We all know that too much sugar isn't good for you. But did we know it could be dangerous? A team of researchers at the University of Utah used mice to do a study on the bad effects of sugar. They found it could have serious effects on people's health. Sugar is found not only in sweets and candies, but also in many household items like pasta and crackers. During the 58-week-long study, mice were fed a diet containing 25% more sugar. This percentage equals a healthy human diet along with three cans of soda daily. The team found that these mice were twice as likely to die as mice fed a similar diet without the sugar. Though the mice did not show signs of obesity or high blood pressure, male mice produced 25% fewer offspring than the other mice. Scientists often use mice for research because they have a similar genetic structure to humans. "Since most substances that are dangerous in mice are also dangerous in people, it's likely that those physical problems that cause those mice to have increased deaths also work in people,"says study author James Ruff of the University of Utah. Findings from this study show bad effects that are not as noticeable as weight gain or heart problems. Sugar can contribute to long-term changes in the body that can change development and even shorten lives. Cutting sugar out of the American diet altogether may be difficult. But making the effort to control our nation's sugar need will provide for a truly sweeter future. According to the study, which of the following statements is wrong? A) Sugar can even shorten lives. B) Sugar's bad effects are not noticeable. C) Eating much more sugar can make mice put on weight and get high blood pressure. D) Mice are more likely to die when fed a diet containing 25% more sugar.
Answer:
C