Why should mankind explore space? Why should money, time and effort be spent exploring and researching something with so few obvious benefits? Why should resources be spent on space rather than on conditions and people on Earth? These are questions that, understandably, are very often asked. Perhaps the best answer lies in our genetic makeup as human beings. What drove our ancestors to move from the trees into the plains, and on into all possible areas and environments? The wider the spread of a species, the better its chance of survival. Perhaps the best reason for exploring space is this genetic tendency to expand wherever possible. Nearly every successful civilization has explored, because by doing so, any dangers in surrounding areas can be identified and prepared for. Without knowledge, we may be completely destroyed by the danger. With knowledge, we can lessen its effects. Exploration also allows minerals and other potential resources to be found. Even if we have no immediate need of them, they will perhaps be useful later. Resources may be more than physical possessions . Knowledge or techniques have been gained through exploration. The techniques may have medical applications which can improve the length or quality of our lives. We have already benefited from other spin-offs including improvements in earthquake prediction, in satellites for weather forecasting and in communications systems. Even non-stick pans and mirrored sunglasses are by-products of technological developments in the space industry! While many resources are spent on what seems a small return, the exploration of space allows creative, brave and intelligent members of our species to focus on what may serve to save us. While space may hold many wonders and explanations of how the universe was formed or how it works, it also holds dangers. The danger exists, but knowledge can help human being to survive. Without the ability to reach out across space, the chance to save ourselves might not exist. While Earth is the only planet... What does the writer want to tell us in the passage? A) Space exploration has created many wonders. B) Space exploration provided the best value for money. C) Space exploration can benefit science and technology. D) The Exploration may help us avoid potential problems on Earth.
D
Massachusetts-based Merriam-Webster Inc. said "w00t" reflects a new direction in the American language led by a generation raised on video games and mobile phone text-messaging. It's like saying "yay," the dictionary said. "It could be after a triumph or for no reason at all," Merriam-Webster said. Visitors to Merriam-Webster's Web site were invited to vote for one of 20 words and phrases selected from the most frequently looked-up words on the site and submitted by readers. Merriam-Webster President John Morse said "w00t" reflected the growing use of numeric keyboards to type words. "People look for self-evident numeral-letter substitutions: 0 for O; 3 for E; 7 for T; and 4 for A," he said. "This is simply a different and more efficient way of representing the alphabetical character." Online gamers often replace numbers and symbols with letters to form what Merriam-Webster calls an "esoteric computer hacker language" known as "l33t speak." This translates into "leet," which is short for "elite." One Web site, www.thinkgeek.com, already sells T-shirts with the word "w00t" printed on the front. Runner-up was "facebook" as a new verb meaning to add someone to a list of friends on the Web site Facebook.com or to search for people on the social networking site. "Truthiness" was the word of last year picked by Webster. A separate survey of words used in the media and on the Internet by California-based Global Language Monitor produced a different set of winners last week. "Hybrid" took top honors as word of the year with "climate change" the top phrase. Runner-up was "surge," based on the "surge" of 30,000 extra U.S. troops deployed to Iraq since mid-June, followed by the word "Bluetooth," a technology used to connect electronic devices via radio waves. "The English language is becoming more and more a globalized language every year," said Global Language Monitor president Paul Payack, noting that this year's list included words also selected from India, Singapore, China and Australia. From the passage we can infer that _ A) "W00t" reflected the growing use of numeric keyboards to type words. B) "W00t" is said when online gamers are excited. C) "W00t" has made T-shirts sell well. D) "W00t" doesn't have a long history.
D
Carmen Arace Middle School is situated in the town of Bloomfield,but four years ago it faced many of the same challenges as inner--city schools nearby:low scores in standardized tests and dropping enrollment of students.Then the hard-driving headmaster, Delore Bolton,persuaded her school to shake up the place by buying a laptop computer for each student and teacher to use in school and at home.For good measure,the board provided wireless Internet access at school.Total cost :$5 million. Now an hour before classes start,every seat in the library is taken by students eager to get online.The teacher talks about rocks as students view them at a colorful website,after school students on buses pull laptops from backpacks to get started on homework.Since the computers arrived,scores in state tests are up 35%and the enrollment increases by 20%. Indeed,school systems in rural areas are eager to follow Carmen Arace Middle School's example.Angus King,the state governor, has proposed using$50 million from an unexpected budget to supply computers for students. However, the school is seeking federal grant money to expand the laptop program.In the meantime,most of the problems have been worked out.Some students use computers to visit unauthorized websites,but teachers have the ability to track where students have been and restrict them."That is the worst when they disable you" says a boy.The habit is rubbing off on parents."I taught my mom to use e-mail."says the honorable girl."And now she is taking computer classes.I'm so proud of her!'' Students are limited when they get online because _ . A) they view lessons at a colorful website B) they will waste an awful lot of money C) they visit unauthorized website sometimes D) they are disabled students
C