高考英语复习 阅读理解汇编(30)

  • 格式:doc
  • 大小:63.01 KB
  • 文档页数:10

1 2017高考英语阅读理解汇编(30) 【2016高考训练】阅读理解—推理判断题。 Expensive perfumes(香水) come in tiny bottles, but many hide a whale-sized secret. To perfect a particular smell, perfume-makers often use an ingredient that comes from sperm whales, called ambergris. But using ambergris, which helps a perfume last longer, is strongly opposed by many people who think it is wrong to kill whales just so we can sweet, Joerg Bohlmann is neither a perfumer nor a whale expert, He's a plant biologist at the University of British Columbia in Canada. But his discovery of a new plant gene(基因) might push whales out of the perfume business. The gene comes from fir trees, found throughout North America and commonly used as Christmas trees. The trees produce a chemical that can be used in perfume in place of ambergris—but with a catch. “There's a problem that many people wouldn't consider. In the tree, the chemical is mixed with many others. That makes separation a challenge,” Bohlmann says.”It's like trying to isolate sugar from a biscuit.” This is where science becomes useful. When Bohlmann learned that fir trees produce the ambergris-like chemical, he decided to use his gene know-how to find the instructions for how to make the ambergris-substitute. Bohlmann found that gene and took it out of the tree cells. Then he did something that might sound strange to someone who doesn't work in genetics: Bohlmann put the gene from the tree into yeast(酵母) cells. Yeast may sound familiar because it's used to make things like bread, wine and beer. Biologists like to work tith yeast because it easily adopts new genes and changes its features and behavior. When Bohlmann put the fir tree into the yeast, the yeast started making the same chemical that had seen produced by the tree. Perfumers pay big money for ambergris because it is a fixative, which means it holds a smell in place on a person's body. 2

“Cheap perfumes smell good in the first hour or so and then everything it gone.” explains Bohlmann. “But expensive perfumes are much more stable. Their smell lasts much longer, for hours or even a day after you apply them.” The new chemical, made from the tree genes, can be used as a fixative, too. And using yeast to make it is far cheaper than acquiring ambergris. Bohlmann admits he never thought he'd get into the perfume business. But now, he says, producers have been calling to find out how to use his technology in mew perfumes. 1. It can be inferred from the passage that if a perfume contains ambergris, . A. Its user probably supports whale hunting B. Its smell will last for about an hour C. There will be a whale symbol on hour D. It is probably very expensive 2. The underlined expression “with a catch” in Paragrph 3 means . A. Being difficult to hold B. having a hidden problem C. needing further testing D. being too similar 3. According to the passage, why are yeast cells often used in genetic research? A. They can take on the characteristics of other genes B. They can reproduce much faster than other cells. C. They share some of the qualities of plant genes. D. They're much cheaper to use than ambergris. 4. What can we learn about Joerg Bohlmann from the passage? A. He is opposed to whale hunting. B. He made his discovery during Christmas. C. He has worked in the perfume industry for many years. D. He has previously done genetic esearch. 语篇解读 本文是一篇科普说明文。介绍了一种使香水香味持久的物质——龙涎香,因这一3

物质来自于鲸,所以遭到人们的反对。科学家们发现一些树中的化学物质可以用来取代它,他们利用酵母菌成功制造出了这些化学物质。 1. D 推理判断题。 根据第二段第二句以及倒数第三段可知,含有龙涎香的香水价格昂贵,故D项正确。 2. B 词义猜测题。根据第四段中“There's a problem that many people wouldn't consider.” 可知该词组意为”有隐含的问题“, 故选B项正确。 3. A 细节理解题。根据第七段第二句可知,由于酵母菌容易吸收其他基因,并将目的基因成功表达出来,故常被用于基因工程研究中,故A项正确。 4. D 推理判断题。根据第二段最后一句及第三段表达的语境可知,Joerg Bohlmann 已经意识到,这些树中某些基因所产生的和其他物质可以被用于香水中以代替龙涎香,但是这些化学物质和其他物质混合在一起,难以分离,故可以断定,Joerg Bohlmann 曾经做过基因研究,故D项正确。

故事类阅读理解。 As a young boy, I sometimes traveled the country roads with my dad. He was a rural mail carrier, and on Saturdays he would ask me to go with him. Driving through the countryside was always an adventure: There were animals to see, people to visit, and chocolate cookies if you knew where to stop, and Dad did. In the spring, Dad delivered boxes full of baby chickens, and when I was a boy it was such fun to stick your fingers through one of the holes of the boxes and let the baby birds peck on your fingers. On Dad's final day of work, it took him well into the evening to complete his rounds because at least one member from each family was waiting at their mailboxes to thank him for his friendship and his years of service.“Two hundred and nineteen mailboxes on my route,” he used to say, “and a story at every one.” One lady had no mailbox, so Dad took the mail in to her every day because she was nearly blind. Once inside, he read her mail and helped her pay her bills.