练习册

  • 练习册
  • 试题
    5．What does the phrase in the last paragraph.“break down .mean? A．Break into pieces. B．Stop working. C．Fall down. D．Lose control. 解析:词义猜测题.短文最后一段列出无纸教室的弊端--总会有电脑出故障或者停电的情况.导致无法正常上课.比较所给四个选项.只有B项符合上下文语意. 答案:B B 词数 328 难度系数 ★★★ 建议用时 6′ A vertical farm is a concept farm which is planted on levels or floors.A sky scraper type building can house a vertical farm.Since the garden is built upwards.rather than outwards.it requires much less space than a conventional farm. The world is quickly running out of room for conventional farming.Vertical farms could be a key to this situation.An 18­story vertical farm could feed as many as 50,000 people.all in an area which is the size of the average city block.Vertical farms in the city could cut down on transportation costs as well.Think about the amount of fuel it takes to transport food from farmland to city.The resources saved would be surprising. Besides saving travel time.food would be delivered in fresher condition and with less damage. There is a growing concern about the use of pesticides in agriculture today.But the vertical farm would be a greenhouse type environment, avoiding the need for a large number of pesticides.Vertical farms can be built in a contained space.therefore they are an excellent solution for living well in an environment far different from our own.Hydroponics could be a big part of vertical gardening.This would reduce the amount of soil needed to grow food.Of course.not all food does well with this type of planting.but there are many crops that actually seem to do better. In some climates.a lack of sunlight creates a short growing season. The solar power option may not work as well here.The addition of grow lights would make it possible to grow crops in vertical gardens in these areas.In other words.we could grow crops in areas where we never could before. Vertical farms may just be a concept for now.but they are a concept that will solve many of our problems in the future. 【查看更多】

     

    题目列表(包括答案和解析)

    阅读理解。
         Imagine a classroom missing the one thing that's long been considered a necessary part to
    reading and writing paper.No notebooks,no textbooks,no test paper.Nor are there any pencils
    or pens,which always seem to run out of ink at the critical moment.A"paperless classroom"is
    what more and more schools are trying to achieve.
         Students don't do any handwriting in this class.Instead,they use palm size,or
    specially-designed computers.The teacher downloads texts from Internet libraries and sends
    them to every student's personal computer.
         Having computers also means that students can use the Web.They can look up information
    on any subject they're studying from maths to social science.
         High school teacher Judy Herrell in Florida,US,described how her class used the Web to
    learn about the war in Afganistan(阿富汗) over one year ago.
         "We could touch every side of the country through different sites from the forest to refugee
    camps(难民营),"she said."Using a book that's three or four years old is impossible."
         And exams can go online too.At a high school in Tennessee,US,students take tests on
    their own computers.The teacher records the grades on the network for everyone to see and
    then copies them to his own electronic grade book.
         A paperless classroom is a big step towards reducing the waste of paper.High school
    teacher Stephanie Sorrell in Kentucky US said she used to give about 900 pieces of paper
    each week to each student.
         "Think about the money and trees we could save with the computers,"she said.But,with
    all this technology,there's always the risk that the machines will break_down.So, in case of
    a power failure or technical problems, paper textbooks are still widely available(可用的) for
    these hitech students.
    1．What does the part of the last but one sentence in the first paragraph,"run out of ink at
    the critical moment" mean?
    A．Pens may not write welt at the critical moment.
    B．Pens get lost easily,so you may not find them at the critical moment.
    C．Pens may have little or no ink at the critical moment.
    D．Pens use ink,while pencils don't.
    2．In a paperless classroom, what is a must?
    A．Pens.           
    B．Computers.  
    C．Information.               
    D．Texts.
    3．The high school teacher，Judy Herrell，used the example of her class to show that________.
    A．the Web could take them everywhere
    B．the Web taught them a lot
    C．the Web is a good tool for information
    D．the Web，better than the textbooks，can give the latest and comprehensive(全面的) information
    4．The paperless classrooms will benefit ________ the most.
    A．students          
    B．teachers  
    C．trees              
    D．computers
    5．What does the phrase in the last paragraph，“break down”，mean?
    A．Break into pieces.        
    B．Stop working.
    C．Fall down.              
    D．Lose control.

    查看答案和解析>>

    Imagine a classroom missing the one thing that's long been considered a necessary part to reading and writing paper.No notebooks，no textbooks，no test paper.Nor are there any pencils or pens，which always seem to run out of ink at the critical moment.A“paperless classroom”is what more and more schools are trying to achieve.

    Students don't do any handwriting in this class.Instead，they use palm size，or specially?designed computers.The teacher downloads texts from Internet libraries and sends them to every student's personal computer.

    Having computers also means that students can use the Web.They can look up information on any subject they're studying from maths to social science.

    High school teacher Judy Herrell in Florida，US，described how her class used the Web to learn about the war in Afganistan(阿富汗) over one year ago.

    “We could touch every side of the country through different sites from the forest to refugee camps(难民营)，”she said.“Using a book that's three or four years old is impossible.”

    And exams can go online too.At a high school in Tennessee，US，students take tests on their own computers.The teacher records the grades on the network for everyone to see and then copies them to his own electronic grade book.

    A paperless classroom is a big step towards reducing the waste of paper.High school teacher Stephanie Sorrell in Kentucky US said she used to give about 900 pieces of paper each week to each student.

    “Think about the money and trees we could save with the computers，”she said.But，with all this technology，there's always the risk that the machines will break_down.So, in case of a power failure or technical problems, paper textbooks are still widely available(可用的) for these hi?tech students.

    1．What does the part of the last but one sentence in the first paragraph，“run out of ink at the critical moment” mean?

    A．Pens may not write welt at the critical moment.

    B．Pens get lost easily，so you may not find them at the critical moment.

    C．Pens may have little or no ink at the critical moment.

    D．Pens use ink，while pencils don't.

    2．In a paperless classroom, what is a must?

    A．Pens.　　　　　 　　　　　B．Computers.

    C．Information.　　　　　　　 D．Texts.

    3．The high school teacher，Judy Herrell，used the example of her class to show that________.

    A．the Web could take them everywhere

    B．the Web taught them a lot

    C．the Web is a good tool for information

    D．the Web，better than the textbooks，can give the latest and comprehensive(全面的) information

    4．The paperless classrooms will benefit ________ the most.

    A．students　　　　　 B．teachers　

    C．trees　　　　　　 D．computers

    5．What does the phrase in the last paragraph，“break down”，mean?

    A．Break into pieces.　　　　 B．Stop working.

    C．Fall down.　　　　　　　 D．Lose control.

     

     

    查看答案和解析>>


    同步练习册答案