阅读理解(共两节)第一节阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。

AWithin five years, a woolly mammoth (猛犸象)will likely be cloned, according to scientists who have just recovered well-preserved bone marrow (骨髓) in a mammoth bone.Russian scientist Siemyon Grigoriev and his colleagues are now analyzing the marrow, which they obtained from the mammoth, found in Siberian soil. Grigoriev and his team, along with colleagues from Japan, have announced that they will start a joint research project aimed at recreating the enormous mammal, which went extinct around 10，000 years ago. Mammoths used to be a common sight in North America and Eurasia. Many of our distant ancestors probably had regular face-to-face encounters with the elephant-like giants.The key to cloning the woolly mammoth is to replace the nuclei of egg cells from an elephant with those extracted from the mammoth's cells. Doing this, according to the researchers, can result in embryos with the mammoth's DNA. That has actually been known for a while.What have been missing are the woolly mammoth's nuclei with undamaged genes. Scientists have been on a search for such nuclei since the late 1990s. Now it sounds like the missing genes may have been found.In the course, global warming may be responsible for the breakthrough. Warmer temperatures tied to global warming have melted ground in eastern Russia that is almost always permanently frozen. As a result, researchers have found a fair number of well-preserved frozen mammoths there, including the one that produced the bone marrow.Is it such a good idea, however, to clone animals that have long been extinct? For a while there has been some discussion of a real-life Jurassic Park setup containing such animals. Introducing these beasts into existing ecosystems could be like bringing in a potentially invasive species that would try to fill some space presently held by other animals. Even if the cloned animals were contained in special parks, there could still be a risk of spreading.So if the woolly mammoth is successfully cloned sooner rather than later, we'd probably be left with more questions and arguments than answers, at least in the short term.21．Which of the following would be the best title for the passage?A．How to clone a woolly mammothB．The woolly mammoth — an ancient speciesC．The research made by Russian and Japanese scientistsD．A woolly mammoth to be cloned22．Which of the following can be the key factor in cloning a mammoth?A．To find a living mammoth in North America or Eurasia.B．To use nuclei from a mammoth's egg cells to replace the nuclei in an elephant's egg cells.C．To find out when and where woolly mammoths lived on the earth.D．To find out if ancient mammoths are distant ancestors of today's elephants.23．Which of the following best describes the writer's attitude towards the future of cloning a mammoth?A．Uncertain.B．Indifferent.C．Positive. D．Disappointed.24．From the passage, we can learn that ________．A．some other extinct species have been cloned successfullyB．the mammoth used to be a very common speciesC．the clone of mammoths should be banned by lawD．a woolly mammoth will be successfully cloned this yearBAn extinct mountain goat that was once common in the Pyrenees became the first animal to be brought back from extinction.Researchers used frozen DNA to produce a clone，but the newborn kid died within minutes of birth due to breathing difficulties.The Pyrenean ibex is a type of mountain goat，which is believed to have died out completely in 2000.Before the death of the last known individual (a 13-year-old female known as Celia)，biologists took cells from her skin and ears，which were frozen in liquid nitrogen (氮)．An earlier cloning attempt to use the skin cells failed.But the latest attempt involved the creation of 439 cloned embryos (胚胎)．Of these cloned embryos，57 were put into the female domestic goats，but only one goat gave birth and the newborn cloned kid died after seven minutes as a result of lung disease.Researchers say that other cloned animals，including sheep，have been born with similar lung disease，but they say that overall the experiment was a major step forward in the effort to bring the ibex back to its mountain home.The leading researcher Jose Folch says，“The cloned kid was genetically like the ibex.In species such as the ibex，cloning is the only possibility to avoid its complete disappearance.”The failure to produce a living clone from DNA that was frozen only fifteen years ago shows the difficulty researchers would face in trying to bring back species that have been extinct for decades or centuries. Researchers have had the idea of bringing back the Tasmanian tiger, which went extinct in 1936. There are，however, other species that have been seriously suggested for cloning, such as the giant panda, the African bongo antelope, the Sumatran tiger and the pygmy hippo. Supporters believe cloning provides hope of keeping these endangered animals alive before they die out.25．What do we know about the cloned ibex?A．It died of lung disease.B．It was the first cloned animal in the world.C．It lived for thirteen years.D．It was born in 2000.26．We can conclude from the passage that ________．A．cloning has developed quickly in developed countriesB．no more animals will die out in the futureC．cloning makes it possible to preserve endangered speciesD．cloning seldom results in physical problems for animals27．What's the best title for this passage?A．Great advancement in cloning goatsB．Difficulties in saving extinct animalsC．Public concerns about cloningD．Cloning brought back an extinct species for a while 28．In which part of a newspaper would you most probably read this passage?A．Society. B．Sports.C．Amusement. D．Science.CMost parents in Britain log onto social networking sites like Facebook to spy on what their children are doing, a study has found. Figures showed that nearly 55% of parents thought of snooping_around on their children's profiles (基本信息) to see what they are up to. They did it to avoid having “awkward conversations” with the children but nearly a quarter admitted it was the only way they could find out about their lives.Websites like Facebook and MySpace along with microblogging site Twitter have become popular among teenagers and children. Figures from the Office for National Statistics show that last year among 16 to 24-year-olds，75% posted messages on them. The majority of 13 to 16­year­olds have more than 100 “friends” on Facebook while more than 750，000 are using thewebsite below the age limit, which is 13.Experts and parents however have expressed anxiety about how they can monitor what the young are up to when they go online. Almost one in 20 mothers and fathers even log on with a friend's account to avoid detection and gain better access to their children's profiles.While 55% said they did spy on their children, 40% said they did not, but the remaining 5% said they would do if they knew how.Some 41% monitor their children's status updates and 39% look at their “wall”，which is where they and friends can write things. Just under one third, 29%, looked at pictures their children had uploaded (上传)．When asked why they behaved like they did, 6% of parents blamed their “overprotective” instincts (本能) and 14% admitted they were just being curious.29．What do the underlined words “snooping around” probably mean?A．Posting messages freely.B．Investigating secretly.C．Moving around casually.D．Communicating easily.30．According to the passage, what makes experts and parents worried?A．What children write in their profiles.B．Whom the children would make friends with.C．Why teenagers like posting messages online.D．How they can monitor children's online behavior.31．According to the study, ________．A．more than one third parents monitor their children's status updatesB．uploading pictures is bringing children great dangerC．most parents are against making net friendsD．few parents know what “wall” is32．According to the passage, which of the following is NOT true?A．Experts and parents want to know what the young do online.B．People younger than 13 are not allowed to use Facebook in Britain.C．Under one third of parents looked at pictures their children had uploaded.D．About 25% of parents have many ways to find out about their children's lives.DIf he'd survived his sudden illness in 1990, Jim Henson might be turning 79 years old onSeptember 24, 2015. He would probably still be at work. We can only guess where his imagination would have taken him — and us — in the 25 years we missed. There's no doubt that he would have broken new ground, for Henson was a never-stopping innovator (创新者)．His long career began far back in 1955, when he created Sam and Friends for a Washington D．C. television station. The programmes were just five minutes long and scheduled in the no-man's-land between afternoon and evening programming. Yet the show won an Emmy for best local entertainment programme in 1958.When it ended in 1961, Henson struggled to find work. He could only get brief appearances on other programmes like The Tonight Show and Saturday Night Live. Only in 1976 did a British producer finally give Henson the green light to start a full-scale television show. The Muppet Show was produced and broadcast in Great Britain before finally arriving on prime time (黄金时间) US television. The network continued to identify it as a children's programme, though the programme won a wide following of adult viewers.One reason for its appeal to grown-ups was the obvious skill in catching the imagination. Henson's talent was so great that it's difficult to think of Kermit or Miss Piggy as nothing more than piles of cloth when they aren't being operated. But Henson himself never forgot how much work went into creating his characters.Way back in his early days, Henson created Kermit the Frog. His body was made from a green coat his mother had thrown away and his eyes were two halves of a ping-pong ball. Over the years, his shape became more expressive. “Kermit is the character through whose eyes the audience is viewing the show. He's a nice guy，” Henson said.33．Which of the following programmes marked the start of Jim Henson's career?A．The Tonight Show. B．Sam and Friends.C．Saturday Night Live. D．The Muppet Show.34．It can be inferred from the passage that Miss Piggy was ________．A．a character Jim Henson createdB．Jim Henson's close friendC．a television programmeD．Kermit's girlfriend35．From the passage, we can infer that ________．A．it was easy for Jim to create his charactersB．Jim Henson died of illness at the age of 54 C．the Muppet Show was broadcast in the US firstD．the programme Sam and Friends was not popular locally第二节根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。