练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    16．John is as good as his word．         he makes a promise，he will keep it．（　　）
    A．BeforeB．WhileC．AlthoughD．Once

    分析 约翰是个言而有信的人．一旦他做出了承诺，他就会坚持．

    解答 答案D．
    before"在…之前"，引导时间状语从句．while表示"当…的时候"，引导时间状语从句；意为"尽管、虽然"，引导让步状语从句；意为"而、但是"，引导比较状语从句．although"尽管，虽然"，引导让步状语从句．once"一旦"，引导时间状语从句．"he makes a promise"和"he will keep it"之间是逻辑上的"时间"关系，可排除C项；再联系句子所表达的意思可知A和B意思不通顺，故答案选D．

    点评 本题考查从属连词的用法．连词的用法辨析，要注意分析主从句之间的逻辑关系，再确定相应的连词，同时注意不同的连词的语义及用法区别．

    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源： 题型：阅读理解

    6．Harvard researchers have created a tough，low-cost，biodegradable （可生物降解的） material inspired by insects'hard outer shells．The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic．The material，made from shrimp （'虾） shells and proteins produced from silk，is called"shrilk．"It is thin，clear，flexible and strong．
    A major benefit of the material is its biodegradability．Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and'60s．Decades later，however，plastic's very durability （耐用性） is raising questions about how appropriate it is for one-time products such as plastic bags，or short-lived consumer goods，used in the home for a few years and then cast into a landfill where they will degrade for centuries．What is the point of making something that lasts 1，000years？
    Shrilk not only will degrade in a landfill，but its basic components are used as fertilizer（肥料），and so will enrich the soil．
    Shrilk has great potential，the inventors said．Materials from which it is made are plentiful in nature，found in everything ranging from shrimp shells，insect bodies to living plants．That makes shrilk low cost，and its mass production possible should it be used for products demanding a lot of material．
    Work on shrilk is continuing in the lab．The inventors said the material becomes flexible when wet，so they're exploring ways to use it in wet environments．They're also developing simpler production processes，which could be used for non-medical products，like for computer cases and other products inside the home．They're even exploring combining it with other materials，like carbon fibers，to give it new properties．

    66．Paragraph I of the passage is mainly about shritk'sC．
    A．remarkable design
    B．interesting name
    C．major features
    D．basic elements
    67．What has become a concern about plastic？A
    A．Using it properly．
    B．Producing it cheaply．
    C．Developing its properties quickly．
    D．Evaluating its contributions fairly．
    68．According to the inventors，shrilk has great potential partly becauseD．
    A．it can help plastic degrade
    B．it can be found in living things
    C．its mass production has been realized
    D．its raw materials are abundant in mature
    69．What are the inventors doing in the lab？B
    A．Replacing carbon fibers with shrilk．
    B．Testing ahrilk's use in wet conditions．
    C．Making shrilk out of used household goods．
    D．Improving shrilk's flexibility for medical purposes．
    70．Which of the following can be the best title for the passage？D
    A．Recent Progress in Environmental Protection
    B．Benefits of Insects in Scientific Research
    C．The Harm of One-time Products
    D．A Possible Alternative to Plastic．

    查看答案和解析>>

    科目：高中英语 来源： 题型：阅读理解

    7．In 1991，high in the mountains of Europe，hikers made a discovery：a dead man partly frozen in the ice．However，the police investigation soon became a scientific one．Carbon dating indicated that the man died over 5，300years ago．Today he is known as the Iceman and has been nicknamed"?tzi"for the ?tztal Alps where he was found．Kept in perfect condition by the ice，he is the oldest complete human body on the earth．
    Scientists think he was an important person in his society．An examination of his teeth and skull tells us that he was not a young man．His arms were not the arms of a laborer．His dagger（匕首） was made of stone，but he carried a copper axe．This implies wealth，and he was probably from the upper classes．We know he could make fire，as a fire-starting kit was discovered with him．Even the food he had eaten enabled scientists to reason exactly where in Italy he lived．
    But why did the Iceman die in such a high and icy place？There have been many theories．Some said he was a lost shepherd．Others thought he was killed in a religious ceremony．Over the years since he was found，tiny scientific discoveries have led to great changes in our understanding of the story of the Iceman．The newest scientific information indicates that he was cruelly murdered．"Even five years ago，the story was that he fled up there and walked around in the snow and probably died of exposure，"said Klaus Oeggl，a scientist at the University of Innsbruck in Austria．"Now it's all changed．It's more like a…crime scene．"
    In June 2001，an X-ray examination of the body showed a small dark shape beneath the Iceman's left shoulder．It was the stone head of an arrow．It had caused a deadly injury that probably killed him very quickly．In 2003，an Australian scientist discovered the blood of four different people on the clothes of the Iceman．Did a bloody fight take place before his murder？Injuries on his hand and head indicate that this may be true．One theory，put forward by archeologist （考古学家） WalterLeitner，says that the Iceman's murder was the end of a fight for power among his people．However，this idea is certainly debatable．

    66．What does"?tzi"refer toA．
    A．the oldest perfectly preserved human body
    B．the most famous tourist attraction?tztal Alps
    C．an important discovery by the police of Europe
    D．the person living in ?tztal Alps for a long time
    67．After the examination of the Iceman，scientists believe thatC．
    A．he died at an early age
    B．he made a fire-starting kit
    C．he had a higher social status
    D．he was born at a village in Italy
    68．According to Klaus Oeggl，the Iceman died fromD．
    A．a serious diseaseB．a snow disaster
    C．a religious faithD．a terrible murder
    69．What is the passage mainly talking aboutC？
    A．The life of ancient people in the AlpsMountains．
    B．The cruel religious life of the Europeans in the past．
    C．The discovery andpossiblecause of death of the Iceman．
    D．The application of carbon dating technology to the Iceman．

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    4．This sweater fits me，but I can't afford to buy ______．I have to choose ______ which is cheap enough for me．（　　）
    A．it； thatB．that； itC．it； oneD．that； the one

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    11．Hurry up!By the time we get to the church，the wedding ceremony_____．（　　）
    A．will have finishedB．has finished
    C．had finishedD．must have finished

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    1．Hardly had I seen the light ______ I heard a loud noise．（　　）
    A．thenB．whenC．sinceD．than

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    8．I got this bicycle for ______．My friend gave it to me when she bought a new one．（　　）
    A．everythingB．somethingC．anythingD．nothing

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    5．I have a tight budget for the trip，so I'm not going to fly        the airlines lower ticket prices．（　　）
    A．onceB．ifC．afterD．unless

    查看答案和解析>>

    科目：高中英语 来源： 题型：选择题

    15．_____30 minutes before each meal，the medicine is very effective against the illness．（　　）
    A．TakeB．TakingC．To takeD．Taken

    查看答案和解析>>

    同步练习册答案