题型：阅读理解 题类：常考题 难易度：普通
黑龙江省哈尔滨市第六中学2018-2019学年高二下学期英语6月阶段性测试卷
After photographer Monni Must's daughter Miya died, the sad mother adopted her black dog, Billy Bean. As Billy became increasingly weak, the thought of its dying was just more than Must could handle. So she decided to clone the dog. “I feared everyone was going to forget Miya," she said, "and my other daughters thought I had completely lost my mind."
Billy's cells were shipped to ViaGen Pets, a Texas company that provides the cloning service. With more than $50,000, Must picked up a new puppy. "The dog has a real soul and is everything my daughter was—fun, social and kind," she said. "I feel that I still have that touchable connection and not just a spiritual connection.”
Cloning animals is hardly new. But the recent news that singer Barbra Streisand had cloned her dog grabbed international headlines. People for the Ethical Treatment of Animals(PETA) president Ingrid Newkirk issued a statement saying she would love to talk her out of cloning, noting that millions of wonderful dogs are getting old in animal shelters every year or dying in terrifying ways when abandoned.
Normally, a doctor takes a tissue biopsy(组织活检), a piece of skin and muscle about the size of a pencil eraser, from the dog. The next step is to take an egg cell from a donor dog, remove the egg's nucleus, and insert DNA from the pet to be cloned. When an embryo(胚胎)develops, it is transplanted in the body of a mother dog.
In the basic cloning procedure, scientists take an entire adult cell and put it into an egg that's been relieved of its own DNA. The resulting embryo is a clone. However, in many animals, only one in 100 cloned embryos ever leads to a live birth. Some embryos die in the IVF dish or in the mothers bodies. Of those that are born, a few suffer from abnormalities and quickly die. Besides, pet cloning doesn't mean copying everything of your beloved pets.
How to Manage Your Phone's Data Use
Smart phones give you access to a wealth of information and media, but most networks put a limit on the amount of data you can use each month. A typical phone contract includes a data allowance of between 500MB and 10GB per month. {#blank#}1{#/blank#} You see, your usage can mount up surprisingly quickly – watching a film on the phone is about 700MB in SD, an hour of streaming TV is around 500MB or 60-140MB for the same of radio, chatting on Skype for an hour is around 40MB. {#blank#}2{#/blank#}
If possible, wait until you can connect to free Wi-Fi before using your phone's data features.
When you are on the road, use your car's GPS, not your phone, to find the way. {#blank#}3{#/blank#} But maps are preloaded in a GPS, making this free to use.
{#blank#}4{#/blank#} Many of these are funded by ads that pop up on your screen. Every ad has to download through your network, using up your data allowance.
If you regularly need to use a lot of data on your phone, consider a data-compressing(压缩) app, such as Onavo(www.onavo.com). {#blank#}5{#/blank#} So you use less of your monthly allowance. You may have to subscribe to such compression services, so you'll need to weigh up whether it's worth the cost.
A. The more data, the higher the monthly cost. B. Remember to use free Wi-Fi anywhere you go. C. Try these tips to better manage your data use. D. It compresses data before it is fed to your phone. E. But you might end up paying more than expected. F. The phone has to download map data as you move. G. Be careful of how many “free” games you play on the phone. |
试题篮
It was given a World Heritage status in 1981 and placed on the "List of World Heritage in Danger" the following year.