New research has shown that loneliness may affect ants to a greater extent than many other living creatures. It has long been known that loneliness can lead to a shorter life. In humans, it has even been found to be a driver of high blood pressure, sleep disorder, and depression that's independent of factors like age, race, gender, weight and economic status. However, loneliness has never been identified as a factor that can cut human lifespan by more than a small part of the average. Ants, on the other hand, appear to be far more sensitive to this stress, with loneliness leading to a surprising 91 percent reduction in lifespan. That's at least according to a study that details how "lonely" ants only live up to six days on average. Ants living in a community, on the other hand, were found to live up to about 66 days. In a series of experiments where ants were picked from their colonies and separated, they were found to continuously walk without rest,consuming far more energy than they could ever. The reason for the behavior is that an isolated ant is simple trying to get back to its colony at all costs, and doesn't know what to do without its nest mates. After all, many entomologists would argue that an ant colony is far more a single living entity than its members. If you were to take a single part from a clock, it would simply move aimlessly as well, running without a purpose. However, while there is a difference between aimlessness and loneliness, the researchers found that the latter affects lonely ants more directly. The study indicated that ants can't even eat alone, as they normally collect some of the food they gather in the field in a specialized organ called a crop.This crop is normally shared with other ants back at a nest,but as for a single ant, it simply just sits there, undigested and useless. How does loneliness influence a person? A) It can make him very tired of himself. B) It can leave him in conflict with others. C) It can lead to him being very independent. D) It can cause him to suffer from poor health
D
Ogilvie the detective arrived. Both the Duke and Duchess were extremely nervous. The Duchess went to the door herself. The detective's piggy eyes surveyed her. His gaze moved on to sweep the spacious, well-decorated room, and the Duke. "Pretty neat set-up you've got."Ogilvie said slowly. The Duchess said sharply, "Imagine you didn't come here to discuss the decoration." "No, Madame. I like nice things, though. Like that expensive car of yours. The one you keep here in the hotel." "In what way does our car concern you?"The Duchess had sat in a straight-backed chair. "Now," he said."You two were in the hit-and-run." She met his eyes directly. "What are you talking about?" "Don't play games, lady. You saw the newspapers. There's been plenty on radio, too." Ogilvie's words spat forth with sudden strength. "You listen to me. This city's mad -- everybody. When they find who killed that kid and her mother, and run away, what will they do? Now I know what I know, and if I do what by rights I should, there'll be police here. But I come to you first, so you could tell your side of it to me." The piggy eyes blinked, then hardened. "If you want it the other way, just say so." The Duchess--three centuries and a half of in-born pride behind her--did not give in easily. Springing to her feet with great anger, gray-green eyes burning, she faced the detective straightly. Her tone would have frightened anyone who knew her well. "You unspeakable blackguard! How dare you!" Ogilvie said nothing. But the Duke cut in, "It's no go, old girl, I'm afraid. It was a good try." Facing Ogilvie, he said, "What you accuse us of is true. I was driving the car and killed the little girl." "That's more like it," Ogilvie said, "now we're getting somewhere." The Duchess sank back into her chair. She asked, "What is it you know?" "I'll tell you, I got a curious nature. You and your wife drove home, you were driving, after a drink. Last night I saw you come in--through the basement, looking shaken, the pair of you. I got wondering why. Like I... The Duke and Duchess were extremely nervous because they _ . A) knew the detective would harm them B) were afraid to meet a stranger at night C) thought the detective would search them D) had just got involved in a traffic accident
D
"Enough" with the multivitamins already. That's the message from experts behind three new studies that tackled an often debated question: Do daily multivitaminsmake you healthier? "We believe that the case is closed - supplementing the diet of well-nourished adults with (most) mineral or vitamin supplements has no clear benefit and might even be harmful," concluded the authors of the editorial summarizing the new research papers. They urge consumers to not 'waste' their money on multivitamins. "The 'stop wasting your money' means that perhaps you're spending money on things that won't protect you long term," editorial co-author, Dr. Edgar Miller said, "What will protect you is if you spend the money on fruits, vegetables, nuts, beans, low fat dairy, and things like that. Exercising would probably be a better use of the money." The strong message was based on a review of the findings from three studies that tracked multivitamins link to cancer protection, heart health, and brain and cognitive measures. The first study looked at vitamin supplementation's role in preventing chronic disease. The next study looked at whether long-term use of multivitamins would have any effect on slowing cognitive decline. The third study looked specifically at multivitamins and minerals role in preventing heart attack. "The three studies found no difference in rates of chronic disease, heart attack and the need for hospitalization between vitamin-takers and placebo -takers." Dr. Edgar Miller stated. One expert agreed some nutrient-deficient people may still benefit from multivitamins. "There might be an argument to continue taking a multi(vitamin) to replace or supplement your not healthy diet," Dr. Edgar Miller added. He also notes that vitamins can benefit people with celiac disease and those who are pregnant. Which of the following is NOT Dr. Edgar Miller's opinion according to the passage? A) Vitamins should not be used for chronic disease prevention. Enough is enough. B) Having a balanced diet and exercising would probably be a better way to keep healthy. C) The three studies do not provide support for use of multivitamin supplements. D) Taking vitamins to replace or supplement your healthy diet is necessary.
D