广东省普宁市20xx届高三上学期第三次月考英语试题word版含答案1内容摘要:

widely available. Environmental DNA can be used in two ways. One is to identify the creatures that live in a certain place. The other is to confirm the presence or lack of a specific creature. Caren Goldberg heads the new eDNA lab at Washington State University in Pullman, Washington. She is one of the first biologists in the northwestern United States to take the technology from the testing phase to actually using it. “It is extremely useful for species that are really hard to find. I have spent many hours looking for species that I was pretty sure were there — looking under rocks, looking in water, doing all kinds of surveys.” Caren Goldberg sees eDNA as a way to get answers more efficiently, safely and with less destruction pared to traditional survey techniques. Until recently, scientists depended on diving deep, ting or using an electric current to temporarily catch fish. “We’re absolutely at this point where proof ofconcept has been established. I don39。 t think everyone necessarily is ready for it yet, but I think the majority of people are.” This newer way to identify what lives in the environment is being popular around the world. Animal experts in Vietnam are using the eDNA to find the last, wild Yangtze giant softshell turtles. One researcher on the Caribbean island of Trinidad is using the sampling technology to find endangered golden treefrogs. And in Madagascar, it is being used to identify amphibian diseases. Ms. Goldberg has used eDNA testing to confirm the local extinction, disappearance, of a leopard frog in the American state of Idaho. She has also been asked to document the spread of the New Zealand mudsnail in the state of Washington. The creature has been found in lakes and other waterways across the state. Now, the . Bureau of Land Management wants Caren Goldberg to look for the Columbia spotted frog in two other western states. The rare amphibian is a candidate for the federal government39。 s threatened species list. Scientists working with the technology say they do not expect robots to replace field biologists anytime soon. But the oldfashioned field work could soon be more targeted. A related research goal is to show how long environmental DNA can last and how far it can travel in different environments. 29. Paragraph One is intended as_____ of the passage. A. the main idea B. the introduction of the topic C. a supporting detail of the main idea D. a contrast of the main idea 30. What has made EDNA magic is that with EDNA_____. A. you are likely to find information about a species with a little air, water, or soil B. some kind of hightech device can be used to test for breathable air or signs of life C. you are able to get answers more efficiently, safely though with more damage D. the cost of gene sequencing has been reduced greatly in recent years. 31. So far, the technique of EDNA has NOT helped scientists search for ______. A. wild Yangtze giant softshell B. endangered golden treefrogs turtles C. the local extinction of a leopard frog D. the spread of the New Zealand mudsnail D When my daughter Sally was five, I bought Grimm’s Fairy Tales and read Snow White to her one night. At the end of the original Grimm tale, Snow White’s stepmother is made to put on redhot iron shoes and dance until she falls down dead. This came as something of a shock. I always thought fairytales had happy endings. And I didn’t want my five yearold daughter going to sleep thinking: “Thank goodness they tortured (折磨 ) that old woman to death.” That’s when I decided to write fairy tales. In the years that followed, I wrote tales nonstop and read them to Sally at bedtime. The Corn Dolly was based on a child who was always plaining。 The Silly King was just a silly story Sally loved。 I wrote The Witch and the Rainbow Cat for Sally because of her enormous appetite for stories about witches while Dr Bonocolus’s Devil is a new version of the Faust legend. Nifobobinus, however, was different. I wrote this book when Sally was older and took up all things girls have to do — who’s friends with who, who stuck a sticker on the back of whose boyfriend, or whatever thing she felt funny. Nicobobinus, the boy who could do anything, came out of my desire for a more innocent world. He lived a 1ong time ago, in a city called Venice. Only his best friend, Rosie, knew he could, and nobody took any notice of anything Rosie said, because she was always having wild ideas anyway. Nicobobinus was so different that it turned out to be an instant hit. The Times cal。
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