The scene in the Hollywood movie The Day After Tomorrow, when global warming could soon turn the global climate into a new ice age, may never occur, according to a new research. The next ice age could be 15,000 years away, say European scientists who last month announced a continuous record of 740,000 years of climate data obtained from the Antarctic ice. Scientists from 10 nations have now almost completely drilled through a 3,000-meter depth of ice high in the Antarctic mainland. They figure out that the area, where summer temperatures can fall to - 40degC, has at least 900,000 years of snowfalls, kept as neatly as the growth rings of a tree. And the ice and air caught in each layer have begun to answer questions about the climates in the past.. The results show that there have been eight ice ages in the past 740, 000 years and eight warmer periods. And by comparing the pattern of global conditions today with those of the past, the researchers reported in Nature that the present warm period could last another 15, 000 years. Research suggests that there is a very close connection between greenhouse gas levels and global average temperatures. It also shows that carbon dioxide levels are the highest for at least 440,000 years. "If people say to you: 'the greenhouse effect is a good thing because we would go into an ice age otherwise,' our data say no, a new ice age is not hanging over our heads," said Eric Wolff from the British Antarctic Survey. "Now we have eight examples of how the climate goes in and out of ice ages... and you can learn what the rules are that go into the climate models that tell us about the future." Scientists found that whenever temperatures rose in the frozen record, so did carbon dioxide level. "In 440,000 years we have never seen greenhouse gas get as thick as it is today," said Dr Wolff. In drilling through the ice in Antarctica, scientists have found that _ . A) the lowest temperature there is - 40degC B) the depth of ice is 3,000 meters C) the ice has existed for 15,000 years D) snowfalls are kept in certain patterns
D
(Question)
How do you know if your home is an easy aim for thefts ? Around the holidays, many families don' t consider taking proper measures to prevent t heir homes from suffering holiday thefts. With just a few simple steps, you can better make sure of the safety of your home during all of the holiday celebrations. Here are a few tips for making it difficult to tell you are away from home. * Either have a trusted neighbor pick up your mail and newspapers, or tell your mailperson to hold your mail until you return. Nothing says"Hey, we are not home! "like when your postbox is filled with all kinds of mails and you have many different newspapers in your driveway. * Set several different lights in your house on random timers .Don' t leave your outdoor lights on all the time. Instead, put your outside lights on timers to be on during the nights. If an outdoor light remains on for days at a time, it means that nobody is home to turn it off. * If you have pets that you are not taking with you on vacation, leave them with a friend, rather than having someo ne come into your house every day to take care of them. When thefts see a neighbor or friend entering your house every day, they will know you are not home. * Close all your curtains when you leave town. This is effective to deter possible thefts, as no one can see what is in your house. If they don' t know what there is to take, then the risk is even greater for them to break in. * This article just has suggested a few tips to help you keep your house safe while you are on holiday. Nothing can truly protect your home unless you have it monitore d by a professional home security system. If you are on holiday in other places, the lights in your house should _ . A) be lit in an irregular way B) be kept on all the night C) be replaced by random timers D) be turned on only once one day
(Answer)
A
Question: Leadership is the most significant word in today's competitive business environment because it directs the manager of a business to focus inward on their personal abilities and style.Experts on leadership will quickly point out that"how things get done" influences the success of the outcomes and indicates a right way and a wrong way to do things.When a noted leader on the art of management,Peter Drucker,coined the phrase"Management is doing things right;leadership is doing the right things,"he was seeking to clarify the distinctions he associates with the terms. When Stephen Covey, founder and director of the Leadership Institute,explored leadership styles in the past decade,he focused on the habits of a great number of highly effective individuals.His Seven Habits of Highly Effective People became a popular bestseller very quickly. His ideas forced a reexamination of the early leadership example,which centered on the feature that was found in the character ethic and the personality ethic.The former ethic suggested success was founded on modesty, loyalty, courage, patience, and so on. The personality ethic suggested it was one's attitude, not behavior, that inspired success, and this ethic was founded on a belief of positive mental attitude. In contrast to each of these ideas, Covey advocates that leaders need to understand universal principles of effectiveness, and he highlights how vital it is for leaders to first personally manage themselves if they are to enjoy any hope of outstanding success in their work environments; To achieve a desired _ for your business, it is essential that you have a personal vision of where you are headed and what you value. Business leadership means that managers need to"put first things first," which implies that before leading others, you need to be clear on your own values, abilities, and strengths and be seen as trustworthy. To be good leaders, what must managers pay close attention to? A) Universal principles of effectiveness. B) Values,abilities and strengths. C) Good qualities such as modesty. D) Courage as well as patience.
Answer:
B