2015年5月9日托福閱讀解析

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2015年5月9日托福閱讀解析
    201559日進行的托??荚囉泻涡骂}型?各種托福題目難度如何?新東方在線聯(lián)合寧波學(xué)校的老師們?yōu)榇蠹覝?zhǔn)備了新的托福考試內(nèi)容和詳解,以下由新東方    mso-bidi-font-family:微軟雅黑;mso-bidi-font-weight:bold">毛承婕老師為大家?guī)黹喿x考試部分的回顧與解析,祝各位考生學(xué)習(xí)愉快!
    詞匯題:
    
    oblige=force
    

    ensure=guarantee
    

    henceforth=from
    past to now

    excavation=dig
    out

    substantial=considerable
    

    incite=stimulate
    

    alteration=modified
    

    in
    preference to=more than

    constituent=component
    characteristic=typical
    

    outweigh=exceed
    
    
    第一篇 先進的探測方法
    
    原文回顧: 一些先進的科技和地理知識的運用可以幫助分析和測定一些歷的情況,每一段都講了不同的探測方法。
    
    相關(guān)背景學(xué)習(xí):Rossi X-ray
    Timing Explorer

    
    The
    Rossi X-ray Timing Explorer (RXTE) is a satellite that observed the time
    structure of astronomical X-ray sources, named after Bruno Rossi. The RXTE has
    three instruments—the Proportional Counter Array, the High-Energy X-ray Timing
    Experiment (HEXTE), and the All Sky Monitor. The RXTE observed X-rays from
    black holes, neutron stars, X-ray pulsars and X-ray bursts. It was funded as
    part of the Explorer program, and is sometimes also called Explorer 69.

    
    RXTE
    was launched from Cape Canaveral on 30 December 1995 on a Delta rocket, has an
    International Designator of 1995-074A and a mass of 3200 kg.

    
    Observations
    from the Rossi X-ray Timing Explorer have been used as evidence for the
    existence of the frame-dragging effect predicted by the theory of general
    relativity. RXTE results have, as of late 2007, been used in more than 1400
    scientific papers.

    
    In
    January 2006, it was announced that Rossi had been used to locate a candidate
    intermediate-mass black hole named M82 X-1. In February 2006, data from RXTE
    was used to prove that the diffuse background X-ray glow in our galaxy comes
    from innumerable, previously undetected white dwarfs and from other stars'
    coronae. In April 2008, RXTE data was used to infer the size of the smallest
    known black hole.

    
    RXTE
    ceased science operations on 3 January 2012.

    
    NASA
    scientists said that the decommissioned RXTE would re-enter the Earth's
    atmosphere "between 2014 and 2023".

    
    
    
    第二篇
     威尼斯缺水問題
    
    原文回顧:威尼斯缺飲用水的問題。由于污染的問題,威尼斯本身缺少淡水,所以缺少飲用水就成了大問題。
    
    
    
    相關(guān)背景學(xué)習(xí):Causes of
    limited fresh water

    
    There
    are many causes of the apparent decrease [citation needed] in our fresh water
    supply. Principal amongst these is the increase in population through
    increasing life expectancy, the increase in per capita water use and the desire
    of many people to live in warm climates that have naturally low levels of fresh
    water resources.[citation needed] Climate change is also likely to change the
    availability and distribution of fresh water across the planet:

    
    "If
    global warming continues to melt glaciers in the polar regions, as expected,
    the supply of fresh water may actually decrease. First, fresh water from the
    melting glaciers will mingle with salt water in the oceans and become too salty
    to drink. Second, the increased ocean volume will cause sea levels to rise,
    contaminating freshwater sources along coastal regions with seawater”.

    
    The
    World Bank adds that the response by freshwater ecosystems to a changing climate
    can be described in terms of three interrelated components: water quality,
    water quantity or volume, and water timing. A change in one often leads to
    shifts in the others as well. Water pollution and subsequent eutrophication
    also reduces the availability of fresh water.

    
    Also,
    there is an uneven distribution of fresh water. While some countries have an
    abundant supply of fresh water, others do not have as much. For example, Canada
    has 20% of the world's fresh water supply, while India has only 10% of the
    world's fresh water supply, even though India's population is more than 30
    times larger than that of Canada. A reason for the uneven distribution of fresh
    water supply may be the differences in climate. For example, in some countries
    in Africa, the frequent lack of rain has led to insufficient water supply for
    irrigation. This has affected agriculture and has led to a shortage of food for
    the people.

    
    
    
    
    第三篇 青蛙的叫聲
    
    原文回顧: 雄性青蛙叫聲的變化對雌性青蛙的吸引和影響,另外不同青蛙的叫聲對于敵人的吸引和影響。
    
    
    相關(guān)背景學(xué)習(xí):Animals Sound
    
    Territory
    sounds

    These
    are sounds, calls, or audible signals made by any one species to its own or any
    other species, establishing boundaries so like or unlike species will not
    transgress those boundaries.

    
    Male
    baboons make sounds heard for miles by other baboons, communicating to those
    other male baboons, the territory of that male baboon. The strength, volume,
    and timbre, inherent in that "call", determine whether or not rival
    males attempt to invade that male baboon's territory.

    
    They
    do this to make them sound impressive and then to attract the female to them.

    
    Courtship
    and/or mate attracting sounds

    These
    are sounds made by the male baboon to attract females to his territory for
    courtship and mating. Again, the strength, quality, and timbre of those sounds,
    often determine the ability of that species to attract females for
    reproduction. These mating calls, often low and guttural, are the main
    criteria, used by the female baboon to determine which male she mates with.

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