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题型:阅读理解 题类:常考题 难易度:普通

宁夏回族自治区银川一中2018-2019高一下学期英语期中考试试卷

阅读理解

    Elephants have impressed us for centuries. They are big, clever, and sociable. But what if someone told you that they may also hold the key to fighting cancer (癌症)?

    People have been wondering why elephants do not develop cancer, even though they have lifespans (寿命) that are similar to humans, living for around 50 to 70 years.

    Now scientists believe they know why. A team at the University of Chicago, US has found that elephants carry a large number of genes that stop tumors (肿瘤) from developing. To be precise, they found 20 copies of an anti­tumor gene called TP53 in elephants. Most other species, including humans, only carry one copy.

    According to the research, which was recently published on the online science network BioRxiv, the extra copies of the gene improved the animal's sensitivity to DNA damage. This lets the cells quickly kill themselves when damaged before they can go on to form deadly tumors.

    “An increased risk of developing cancer has stood in the way of the evolution of large body sizes in many animals,” study author Dr. Vincent Lynch told The Guardian. If every living cell (细胞) has the same chance of becoming cancerous, large creatures with long lifespans like whales and elephants should have a greater risk of developing cancer than humans and mice do. But across species, the risk of cancer does not show a connection with body mass.

    This_phenomenon was found by Oxford University scientist Richard Peto in the 1970s and later named "Peto's paradox". Evolutionary (进化的) biologists believe it results from larger animals using protection that many smaller animals do not. In the elephant's case, the making of TP53 is nature's way of keeping this species alive.

    The study also found that when the same genes were brought to life in mice, they had the same cancer resistance (抵抗) as elephants. This means researchers could use the discovery to develop new treatments that can help stop cancers from spreading or even developing in the first place.

    "Nature has already figured out how to prevent cancer, " said Joshua Schiffman, an oncologist at the School of Medicine, University of Utah, US.

    “It's up to us to learn how different animals tackle (处理) the problem so we can use those strategies to prevent cancer in people.”

(1)、Why are elephants unlikely to develop cancer?
A、They have a large body size. B、Their genes suffer no DNA damage. C、Certain genes in their body kill existing tumors. D、They carry many genes that keep tumors from developing.
(2)、According to Dr. Vincent Lynch, what has been a risk in the evolution of large animals?
A、A risk of deadly tumors. B、Human behavior. C、Extreme weather. D、Cells killing themselves.
(3)、What does the underlined expression “This phenomenon” in the sixth paragraph refer to?
A、Larger animals have protection from TP53. B、The risk of cancer is not related to body size. C、The larger animals are, the bigger risk of cancer they have. D、Larger animals suffer the same risk of cancer as smaller ones do.
(4)、We can conclude from the last three paragraphs that ________.
A、humans are expected to stop cancer in the near future B、depending on nature is not enough to fight against cancer C、this new treatment is more effective than the present ones D、the TP53 genes have proven useful in stopping cancer in mice
举一反三
阅读理解
    If your child constantly moves when he's doing math homework or insists on listening to music while studying, take heart. Although it may seem like he's trying to drive you crazy, he's probably just using the strategies that help him learn.
    “I like to study at a desk in silence, and my daughter can't think that way. She likes to bounce around on a ball with music in the background,” says author Maureen McKay, whose website, Optimistic Outcomes, provides tips based on a child's learning style for parents. “Sometimes kids are just doing what works for them.”
    Three basic learning styles are auditory, kinesthetic(肌肉运动知觉的), and visual ones. Auditory learners prefer listening to explanations to reading them and may like to study by reciting information aloud. This type of learner may want to have background music while studying, or they may be distracted by noises and need a quiet environment to study. Kinesthetic learners learn by doing and touching something. They may have trouble sitting still while studying, and they are better able to understand information by writing it down or doing hands-on activities. Visual learners process new information by reading, looking at graphics, or watching a demonstration. Children with this learning style can grasp information presented in a chart or graph, but they may grow impatient listening to an explanation.
    Most people use a combination of styles but have a clear preference for one. Understanding your child's learning style can reduce homework frustrations and make it easier for families to communicate, says McKay. She observed different learning styles while working as a teacher's assistant, and she started researching strategies for working in different learning styles when her daughter began having trouble in elementary school.
    Because her daughter had difficulty listening in class, McKay looked for exercises to strengthen listening skills. Her daughter is now doing well in middle school, and she owes her success to the fact that her teachers and parents came to understand her unique style of learning.
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
根据短文理解,选择正确答案。

    Born on August 9,1963,New Jersey,Whitney Houston almost seemed bound to become a singer.Her mother Cissy Houston was the choir(唱诗班)minister at New Hope Baptist Church,and it was there that a young Whitney got her start.

    When she was 19,Whitney Houston was discovered in a nightclub by the famous Clive Davis of Arista Records. In 1983,Houston made her debut(首演)on national television.In 1985,she released her debut album Whitney Houston and almost immediately became a sensation.Over the next year,her hit singles Saving All My Love for You and How Will I Know helped the album reach the top of the charts,where it staved for fourteen weeks in a row. Houston won a Grammy in 1986 for Saving All My Love for You.

    By 1992,Whitney Houston was on top of the world,but her life was about to get very complicated very quickly. That year she married the R&B singer Bobby Brown.At first the marriage was passionate and loving,but things turned sour as the decade progressed and both Brown and Houston battled drug abuse.

    In spite of these growing personal troubles,Whitney Houston continued to progress in her career,crossing over successfully into acting in 1992 by starring in The Bodyguard.Her single from the movie,I will Always Love You, proved to be Houston's biggest hit ever,spending a record-breaking fourteen weeks on top of the US charts.

    In the late 1990s and early 2000s,Whitney Houston's increasingly rocky marriage,struggles with drug and health problems threatened her career.Over the next few years,Houston attempted to break her drug habit and divorced Bobby Brown in 2007.

    After almost a decade of struggling with her personal life,Houston seemed to be pulling herself together.She released a new album,I Look to You,in 2009.The recording received a warm welcome from music fans.

    In early 2012,Houston worked on a new musical film Sparkle with Jordin Spark.Unfortunately,Houston didn't live long enough to see it.

    Whitney Houston died on February 11,2012,in Los Angeles.With her passing,the music world has lost one of its most outstanding stars.

根据短文理解,选择正确答案。

    My friend BJ Gallagher told me a great story recently, about her own experience with resentment (愤恨). She once worked as the training manager for a large newspaper, where she found the corporate culture extremely frustrating. The company was a hundred years old and their past success ha d blinded them to the need for change. Finally, after butting heads with several senior executives (主管) many times, she left the company. But she found that she hadn't left her resentment, frustration, and anger behind when she resigned.

    “I finally decided to write about my experiences and my feelings at the newspaper. I wanted to be rid of that company and those people, once and for all. So I wrote and I wrote. It wasn't just a story that poured out; it was a whole book! We called it A peacock in the Land of Penguins. I was the peacock and those newspaper executives were the penguins.”

    “It took me several more years to finally get over my negative emotions. Through a lot of soul-searching and reflection, I finally was able to let go of my resentment. I came to see that there was nothing personal in the way they treated me, and they were good people doing what they thought best for the company. I was the one who had made it personal. I thought they were making my life miserable on purpose.”

    “Finally, the time came when I decided to make amends (弥补) for the sharp, angry things I had said about the company. I invited my former boss to dinner and made my apology. It was a great healing process for me. I finally felt free of the resentment that had been eating me up.”

    “What was the final outcome?” I asked her.

    “Gratitude,” she replied. “Not only wasn't I resentful any more, I was grateful to the company. If I hadn't had those painful experiences, I would never have written a book. And the book became hugely successful – now published in 21 languages; it transformed my business.”

阅读理解

    Holidays are really important. Many of us will have childhood memories of summer holidays where we were taken away from home to experience new environments and learn in different ways.

    But holidays are expensive and, for those on low wages or living on benefits, they are often unobtainable. Even the cheapest holidays require travel and other additional costs that are difficult for many families to meet.

    For working parents, the long summer break can be a very difficult problem for childcare. When an annual leave allowance amounts to only five weeks, there is a need to spread this across the year. Couples can find themselves taking leave in turn in order to care for children who are on holiday. For some ' this makes even an affordable family holiday difficult.

    The schools that I visit in Nottingham are full of experienced staff committed to giving our children a caring and inspiring learning environment. The number of children receiving free school meals is quite large in Nottingham and many schools have breakfast clubs to make sure that children get a healthy start to the day. Most schools undertake programs of group or individual educational support. Schools also have an important role in sofeguaiding children's welfare through the ongoing touch and support with their pupils. During the long summer holidays, much of this is missed.

    While teachers are holidaying in the UK, many of their pupils spend the whole six weeks on the street where they live. The lack of free school meals for six weeks can result in pressure on a family budget and an inability to afford the inspiring experiences that help children to continue their learning.

    In setting out its plans for a five-term year, Nottingham City Council (委员会)is seeking to reduce the summer holiday down lo four and a half weeks, with a more balanced five terms of roughly eight weeks, each followed by a two-week break. We believe this will give real “down time" for school staff and pupils alike but will be short enough not to cause a real break in learning.

    We acknowledge that this change may be difficult for some school staff, particularly whose own children are educated in other authorities. However, this must be weighed against the benefits for city children for whom we all have the greatest duty of care.

阅读理解

    I was in the seventh grade, and we had moved to New Jersey in November. By then, everyone already had had their own friends, and no one wanted to talk to a new girl. To make things worse, they put me in "Section L". I found out later that everyone called Section L "Loserville". It was sort of an open secret that it was the section for troublemakers and not-so-smart kids. When I found out, I wanted to scream. I had always been a good student and had amazing friends, and now everyone thought I was a loser!

     I did text my friends in Illinois almost every night, especially my best friend, Ana. At first my friends wanted to hear all about it. But then some stopped texting back once I said something about how miserable I was. One night when I was texting with Ana, I complained about another friend who had just done that.

     Ana's texts came really fast for the next few minutes and they surprised me. She said that she was tired of hearing about how bad everything was in New Jersey, too. She said she did not want to hurt my feelings but that I needed to stop feeling so sorry for myself all the time, I had to try to make things better.

     The next day, I thought a lot about what Ana had said. She was right!

     I wish I could say that everything changed overnight after that, but it didn't. I was still stuck in "Loserville", and some people were still mean to me, even though I tried to just stay out of their way.

     But what did change was me—I stopped feeling so sorry for myself and did something about making friends. I signed up to make sets for the school play. I met a lot of new people there, and suddenly I had friends to say hi to in the halls!

     I still miss Illinois sometimes, but life in New Jersey isn't so hard anymore. Even though I couldn't change my situation, I could change my attitude—and that made all the difference.

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