Many of us remember being in awe(敬畏) when we saw cloned dinosaurs running wild in the film Jurassic Park. And the idea of using technology to revive(恢复) extinct species has long fascinated not only writers and directors, but scientists as well.

    According to The Telegraph, woolly mammoths(长毛猛犸象), which featured in the popular Ice Age animated movie series, “may walk the earth once more” now that scientists have taken another step toward realizing a long-held dream—recreating their DNA.

    Mammoths became extinct around 10,000 years ago. However, since the discovery of near-perfect preserved remains in Arctic permafrost(北极冻土带) in May 2013, a variety of research studies have been carried out since.

    Geneticists from Harvard University analyzed DNA from the remains, looking for genes which separated mammoths from elephants, such as hairiness and ear size. They then used the results to reproduce exact copies of 14 mammoth genes. “It is the first time that mammoth genes have been alive—although so far it has only been done in the lab,” George Church, lead researcher of the project, told the Sunday Times.

    Church then used a new technique which allows scientists to edit DNA carefully, replacing sections of elephant DNA with the mammoth genes. So “we now have functioning elephant cells with mammoth DNA in them,” he said.

    However, Church ruled out the possibility of bringing the mammoths back to life via cloning from frozen remains. He said he “preferred to focus on rebuilding the full mammoth genome(基因组) by analyzing DNA from preserved remains and putting it into the cells of its closest living relative – the Asian elephant,” reported The Telegraph.

    Church argued that the return of the woolly mammoth—or rather, the return of something very similar—could help bring back fragile(脆弱的) ecosystems. However, some scientists believe that bringing back the mammoth would be unethical.

    Professor Alex Greenwood, an expert on ancient DNA, said: “We may face the extinction of African and Asian elephants. Why bring back another elephant from extinction when we cannot even keep the ones that are not extinct around?” he told the Sunday Times. “What is the message? We can be as irresponsible with the environment as we want. Then we'll just clone things back?”

    “Money would be better spent focusing on conserving what we do have than spending it on an animal that has been extinct for thousands of years,” he said.

    Car Hire

    Hiring a self-drive car really adds to the enjoyment of your holiday.There are so many places of interest to visit,and if you enjoy seeing more than just the city center there's no better way to explore than by car.

    Hire Charges:

    What's included

a) Unlimited mileage （英里数）.

b) Expenses on oil,maintenance and repairs,which will be repaid on production of invoices.

C) Full insurance except personal accident (see below).

What's not included

a) Personal accident insurance.

b) Garaging,petrol,parking and traffic fines.

    Conditions of Hire:

    The shortest rental period at these special low prices is three days.For prices for periods of one or two days you only see our representative at the hotel.

    Car hire must be booked six weeks or more before arrival in London to guarantee a car.But if you have been unable to make a booking in advance please see our representative at the hotel who may still be able to help you.

    The car types on the sheet are examples of the types of cars in each price range,but particular car cannot be guaranteed.

    Upon delivery the driver (s) will be asked to sigh the car hire company's Condition of Hire.

    If you decide to hire a car,just fill in the Booking Form and return it to us.A booking fee of £ 12 as part of the car hire cost is required.

    Should you be forced to cancel your car hire booking after payment in full (two weeks before date of hire),a cancellation charge of £ 12 will be made.

    Are you addicted to computer games? Do you stay up all night playing them? Do you feel happy after you play computer games? There's no doubt that the excitement and appealing of games these days makes them hard to put down. More and more people are attracted by the choice when it comes to gaming: You can role play--creating your own fantasy characters and stories, giving you a chance to step out of everyday life into an imaginary world. And there are shooting games where you can let out your anger and depression in violent situations where you kill people with guns. You can get excited from the games.

    However, can these kinds of games really be fun and can being absorbed in virtual reality be good for us? Should we worry about their effects on our health? Popular games like Grand Theft Auto have been blamed for everything from falling results at school to causing acts of extreme violence. Internet safety advisor, Alan MacKenzie, thinks “many people understandably will just think that a game is just a game and not realizing the exact content that's in there”. He gives an example of the violence, which he says is “wholly inappropriate for anybody, not to mention children.”

    Others will argue that gaming is a harmless form of entertainment. There is evidence that playing video games could actually be good for us. Some games are educational and using games certainly can help children learn good qualities. Studies have also shown that the skills used in playing games can cause growth in certain areas of the brain, the ability to think in 3D and even improve our eyesight.

    Video gamers are also no longer just simple creatures. Just as Edward Smith, the professor in Oxford University, puts it that for some, gaming is having a positive effect on their social lives with games like Halo and World of Warcraft often being played in groups. When your group works together to win the game, your sense of achievement is higher than when winning by yourself.

So every coin has two sides. It seems today, gaming isn't just for game fans and if used in a proper way, we can all take part. If video games have two sides, what side do you stand by?

    Gardening is a very popular hobby. And it is one that produces wonderful results – food for your dinner table and flowers for your home! Gardens themselves can be very beautiful. So you would think that a garden path is a great place to be. Well, in conversation, it is not. Leading someone up the garden path means you are trying to trick them. You are not trying to show them your beautiful flowers.

    Speaking of beautiful flowers, gardeners love to see small buds (芽) forming on their plants. Besides plants and flowers, people can bud, too. If a child is good at drawing and painting, we can call him a budding artist. So “budding” describes something that is beginning to develop.

    On the opposite end, you stop something from growing if you nip it in the bud. This is a common expression when we talk about stopping something bad and preventing it from continuing. It's good to nip small problems in the bud before they turn into big problems.

    Now flowers that bloom （开花）are beautiful to see – even garden-variety flowers. “Garden-variety” describes anything that is common and not so special. You can have a garden-variety cold—not a serious illness.

    Now, a problem that many gardeners have is weeds. Weeds grow easily and can quickly take over a garden. In conversation, we sometimes use “weeds” to mean too many details. So, if you are in the weeds, you are taken over by too many details.

    As we said, weeds grow quickly. So do children. So, we like to say a child grows like a weed. This expression compares a child's fast growth to that of a weed.

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Dear Alcohol,

    You've been around forever. I can remember all the pain you've caused for me.

    Do you remember the night you almost took my father's life? I do. He loves you. Sometimes I think he loves you more than he loves me. He's addicted to you, to the way you promise to rid him of his problems only to cause more of them. You just sat back and laughed as his car went spinning through the street, crashing into two other cars. He wasn't the only one hurt by you that night.

    Do you remember the night of my first high school party? You were there. My friends were intrigued by you. They treated you as if they were never going to see you again, drinking all of you that they could. I spent two hours that night helping my friends who had fallen completely. "I'm so embarrassed," they said as I held their hair back so that they could vomit. "I'm sorry," they said when I called taxies for them, walking them out and paying the driver in advance. "This won't happen again," they said as they were sent to the hospital to have their stomachs pumped. Two 15-year-old girls slept in hospital beds that night thanks to you.

    Do you remember the night when you took advantage of my 17-year-old neighbor who had to drive to pick up his sister from her dance lessons? Do you know how we all felt when he hit another car and killed the two people in the other car? He died the next morning too. His sister walked home from her dance lesson, and passed police cars and a crowd of people gathering on the sidewalk just two blocks away from the dance studio. She didn't realize her brother was in the midst of it all. She never saw him again. And it's all your fault.

    I wish you'd walk out of my life forever. I don't want anything to do with you. Look at all the pain you've caused. Sure, you've made people happy too from time to time. But the damage you've caused in the lives of millions is inexcusable. Stop luring (引诱) in the people I love. Stop hurting me, please.

Sincerely,

Me