Can dogs and cats live in perfect harmony in the same home? People who are thinking about adopting a dog as a friend for their cats are worried that they will fight. A recent research has found a new recipe of success. According to the study, if the cat is adopted before the dog, and if they are introduced when still young (less than 6 months for cats, a year for dogs), it is highly probable that the two pets will get along _ . Two-thirds of the homes interviewed reported a positive relationship between their cat and dog. However, it wasn't all sweetness and light. There was a reported coldness between the cat and dog in 25% of the homes, while aggression and fighting were observed in 10% of the homes. One reason for this is probably that some of their body signals were just opposite. For example, when a cat turns its head away it signals aggression, while a dog doing the same signals submission. In homes with cats and dogs living peacefully, researchers observed a surprising behavior. They are learning how to talk each other's language. It is a surprise that cats can learn how to talk 'dog', and dogs can learn how to talk 'cat'. What's interesting is that both cats and dogs have appeared to develop their intelligence. They can learn how to read each other's body signals, suggesting that the two may have more in common than we previously suspected. Once familiar with each other's presence and body language, cats and dogs can play together, greet each other nose to nose, and enjoy sleeping together on the sofa. They can easily share the same water bowl and in some cases groom each other. The significance of the research on cats and dogs may go beyond pets -- to people who don't get along, including neighbors, colleagues at work, and even world superpowers. If cats and dogs can learn to get along, surely people have a good chance. What can we human beings learn from cats and dogs? A) We should learn to live in harmony. B) We should know more about animals. C) We should live in peace with animals. D) We should learn more body languages.
A
(Question)
Caffeine not only gives us a daily jump start, but new research suggests it also can strengthen long-term memory. According to the US Food and Drug Administration, nearly 90 percent of people worldwide consume about 200 milligrams of caffeine each day. That' s equivalent to about one strong cup of coffee a day. Writing in " Nature Neuroscience" , Johns Hopkins University researchers say their findings show that caffeine strengthens certain memories for up t0 24 hours after being taken in. " We've always known that caffeine has cognitive-enhancing effects , but its ,particular effects on strengthening memories and making them resistant to forgetting has never been examined in detail in humans, " said senior author of the paper Michael Yassa. " We re- port for the first time a specific effect of caffeine on reducing forgetting over 24 hours. " Conducting a double-blind trial, the researchers worked with a test group of people who didn't regularly consume caffeinated products. Five minutes after studying a series of images, the test subjects were given either a placebo or a 200-milligram caffeine tablet. To check the caffeine levels of their test subjects, the research team took saliva samples from them before they took their tablets and again one, three and 24 hours after- wards. Both groups of test participants ( those who took the placebo and those who took the caffeine tablet) were tested the following day to see if they could recognize the images they' d seen the previous day. The test included showing the test subjects another series of images that included some new images , those that were shown the previous day, as well as other images that were similar, but not the same as those they had viewed earlier. The researchers found that more members of the group who were given the caffeine tablets were able to correctly identify some of the new images as " similar" to previously viewed images rather than incorrectly identifying them as the same. "We also know that caffeine is associated with... During the research ,the researchers did the following things EXCEPT A) giving the test subjects placebos or caffeine tablets B) checking the caffeine levels of the test subjects C) encouraging the test subjects to drink more coffee D) showing the test subjects series of images
(Answer)
C
Ques: Death Valley is the lowest, hottest, driest area in North America. This California National Park has less than 5 cm of rainfall a year and temperature up to 53degC in summer. That's enough to keep Americans away during the hottest months from June to August. But it is the high temperature and terrible heat that draw their most crazy fans, the foreign tourists. From all over the world, they come to the valley floor in cars, carrying maps and water bottles, and fanning themselves with newspapers to keep cool. About 1.3 million visitors enter the park each year, from June through August. 90% of them are foreigners. They go there to experience the summer heat that gives Death Valley its name. The average high in July is 53.2 degC and the low 30 degC. For August, the average high is 52.2 degC and the low 29.4 degC. So what do Americans think of the foreign visitors who arrive for the heat, just when locals from the United States try to avoid it? Park manager Brenda Henson says, " The foreigners want to experience the heat in Death Valley. We think it's crazy." In fact, Death Valley is a series of salt flats 225 km long and 6 km to 26 km wide. Birds and animals are largely absent, and only the plants have some chance of existence in this extreme place. One tourist from Paris concluded, " We come to it because we can tell all our friends and family that we've been to the hottest place in the world." What would be the best title for the passage? A) Crazy Fans of Death Valley. B) Importance of Death Valley. C) Beauty of California National Park. D) The Best Tourist Attraction in North America.
Ans: A
Ques: Although there are many ways in which people communicate through speech, public speaking has probably received more study and attracted more attention than any other. Politicians winning an election, salespeople presenting products and etc. All depend upon this form of public communication. Even people who do not make speaking a part of their daily work are often asked to make public speeches: students at graduation, for instance, or members of churches, clubs or other organizations. Nearly everyone speaks in public at some time or other, and those who perform the task well often become leaders. There are many reasons for speaking in public. A public speaker may hope to teach an audience about new ideas, or provide information about some topic. Creating a good feeling or entertaining an audience may be another purpose. Public speakers, however, most often seek to persuade an audience to accept new opinions, to take certain actions, or to see the world in a new way. Public speakers usually know well in advance when they are scheduled to make a speech. Consequently, they are able to prepare their message before they deliver it. Sometimes, though, speakers must deliver the message unprepared, or off the cuff, such as when they are asked to speak at a wedding reception or to participate in an interview. When they do not have to speak unprepared, most speakers write their own speeches. Politicians and business managers sometimes employ professional writers who prepare their speeches for them. These professional writers may work alone or in small teams. Although the speaker may have some ideas into the contents of the speech, the writers sometimes have a great influence over the opinions expressed by their employers. Regardless of how a speech is prepared, the person who delivers it is given credit for its effect upon its hearers. Which of the following is rarely the purpose of public speaking? A) To influence people's ideas and behaviour. B) To persuade the audience to accept an idea. C) To enjoy the satisfaction from one's own speech. D) To develop public interest.
Ans:
C