27． Scientists ____to make the deserts into good land again．A． carry water'B．grow foodC． do nothingD． study a lot

题目

27． Scientists ____to make the deserts into good land again．

A． carry water'

B．grow food

C． do nothing

D． study a lot

相似考题

1.27． From the passage we know that fresh water doesn't come from________ ．A．riversB．lakesC．undergroundD．the sea

2.A:It's a good ideA.But who's going to _______ the plan? B: I think Tom and Greg will.A.set asideB. carry outC. carry awayD. get through

3.Good work ___goood pay.A、deservesB、requestsC、deserts

4.At the edge of the land lies the ocean, ____ the earth is covered with water.A.whichB.thatC.whereD.when

更多“27. Scientists ____to make the deserts into good land again.A. carry water' B.grow foo ”相关问题

  • 第1题：

    how can you create good vacuum on the fresh water (FW) distiller ?


    正确答案：First of all ,to create good vacuum on the FW distiller .i must make sure that the internal chamber is sealed against possible entrance of the air during operation .secondly ,the air ejector and ejector pump should be in good condition .thirdly ,some revelant valves parking should be sealed against air leakage ,lastly ,the unit should be free from scales (水垢) 。both on its condenser and heater .

  • 第2题：

    A

    Why do plants grow in some places and not in others? Why does some land have so much growing on it，while other land has almost no plants growing on it at all?

    To grow plants need several things． One is warmth． In very cold places almost nothing grows． Plants also need water． In very dry parts of the earth only a few unusual plants can grow． That's why dry deserts everywhere are almost not covered by trees or grass．

    Plants must also have a place in which to f，ut down their roots and grow． They find it diffi-culr to grow on hard land． The town is built on hard land． The plants here have only the soil found between the cracks of the stones Io grow in．

    Another thing plants must have before they can grow is food．

    Whar will happen if we try to make things grow on the sandy beach? A few plants，such as beach grass，will grow in sand，L ut most plants won-t． Even if the weather is warm enough．and we water the plants each day． Many of them will die because the sand on this beach has al-most no food for plants．

    ( )21． According to the passage，plants need _________ things to grow well．

    A． two

    B． three

    C． four

    D． five


    正确答案：C
    Ⅲ．21．C【解析】通读全文可知：植物的生长需要4个条件：1．适宜的温度；2．水;3．合适的土壤；4.养分。

  • 第3题：

    28． Which is NOT true?

    A． The land never stops becoming deserts．

    B． Scientists ask the people to live in the deserts and grow food there．

    C． People do bad things to the earth．

    D． Scientists may not be able to change the deserts．


    正确答案：B
    28.B【解析】根据全文可知文章讲述的问题和谈到的事例并没有体现B项的叙述，故此项与原文不符。

  • 第4题：

    The abbreviation L.W.R.P. on the navigation maps means ______.

    A.low water reference plane

    B.low winter runoff point

    C.least water river plane

    D.land wall reference point


    正确答案：A

  • 第5题：

    Good anchorage may be obtained anywhere，generally mud and sand，in this water area Vessel may have______．

    A.good dragging ground

    B.good towing ground

    C.good holding ground

    D.good grabbing ground


    正确答案：C
    在这片水域好的锚地可以在任何地方找到，一般是泥沙底，船舶有好的抓力。

  • 第6题：

    Some of our clients have complained that the time it takes to get a__________ from a service representative is enough to make them not want to use our services again.

    A. response
    B. responding
    C. responded
    D. respond

    答案：A
    解析：
    我们的一些客户投诉说，从服务人员处得到答复的时间足以让他们不想再使用我们的服务。本题需选择适当的词形。故A为正确答案。

  • 第7题：

    共用题干
    第一篇

    Water Resources on the Earth

    The second most important constituent（构成成分）of the biosphere（生物圈）is liquid water. This can only exist in a very narrow range of temperatures,since water freezes at 0℃and boils a 100℃．Life as we know it would only be possible on the surface of a planet which had temperature: somewhere within this narrow range.
    The earth's supply of water probably remains fairly constant in quantity.The total quantity of water is not known very accurately,but it is about enough to cover the surface of the globe to a depth of about two and three-quarter kilometers.Most of it is in the form of the salt water of the oceans一about 97 percent. The rest is fresh.But three-quarters of this is in the form of ice at the poles and or mountains and cannot be used by living systems until melted.Of the remaining fraction,which h somewhat less than one percent of the whole.There is 10—20 times as much stored underground water as there is actually on the surface.There is also a tiny,but extremely important fraction of the water supply which is present as water vapour in the atmosphere.
    Water vapour in the atmosphere is the channel through which the whole water circulation（循环） of the biosphere has to pass.Water evaporated（蒸发）from the surface of the oceans,from lakes and rivers and from moist（潮湿的）earth is added to it. From it the water comes out again as rain or snow,falling on either the sea or the land. There is,as might be expected, a more intensive evaporation per unit area over the sea and oceans than over the land,but there is more rainfall over the land than over the oceans and the balance is restored by the run off from the land in the form of rivers.

    There is more of rainfall________.
    A:over the mountains than over the rivers
    B:over the rivers than over the mountains
    C:over the land than over the oceans
    D:over the oceans than over the land

    答案：C
    解析：
    文章第一段的第二句讲到液态水“only exist in a very narrow range of temperatures"，虽然B（我们星球的表面）也有点道理，但是液态水对温度的要求很高，并非地球的所有表面都有液态水存在，所以答案D正确。
    第二段第一句提到地球上水的供给“remains fairly constant in quantity"，数量上是恒定的，它就没有增加也不会减少，只不过会以不同的形态出现，所以选择B（保持不变）。
    问题是“地球上绝大部分淡水以什么形式出现？”第二段中间提到淡水时，说到“three-quarters of this is in the form of ice at the poles and on mountains"，即3/4的淡水以冰的形式存在于两极和高山中，后面提到剩余部分的淡水存在于地下，但占比少于1%,所以选项A正确。
    词义辫析题， fraction有“小部分”的意思，考虑到前面提到地球97％的水以海洋咸水的形式存在，剩下的3％则以冰的形式存在于两极和高山，余下的自然不多，所以选B。
    第三段的最后一句说到“there is more rainfall over the land than over the oceans”，陆地的降雨比海洋要多，但没有提到河流和山脉的降雨比较，所以C正确。大气中的水蒸气是整个生物圈的水循环必经的途径。水从海洋的表面、湖泊、河流和潮湿的泥土中蒸发出来并补充到大气中。水以雨或雪的形式再次出现，降落在海洋或陆地上。可以预料到的是，海洋上空每单位面积的水蒸气比在陆地上空更为密集，但是，陆地比海洋有更多的降雨，水在陆地上以河流的形式流出以保持水资源的平衡。

  • 第8题：

    Water transport occurs on inland waterways，such as（），and oceans.

    • A、rivers
    • B、lakes
    • C、canals
    • D、land

    正确答案:A,B,C

  • 第9题：

    单选题
    What describes a flood current（）.
    A

    Horizontal movement of the water toward the land after high tide

    B

    Horizontal movement of the water toward the land after low tide

    C

    Horizontal movement of the water away from the land following high tide

    D

    Horizontal movement of the water away from the land following low tide


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following statements concerning the water tube and fire tube boilers is not true?（）
    A

    natural circulation of the water in the water tube boiler is better than that in the fire tube boiler

    B

    for the same output the water tube boiler will carry less mass of water compared with the fire tube boiler

    C

    the water tube boiler will cost shorter time for steam raising

    D

    the water tube boiler require lower skill in operating and maintaining


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Under International Rules（）.
    A

    all vessels must carry an after range light

    B

    vessels less than 50 meters in length need not carry an after range light

    C

    vessels stopped dead in the water should turn off their range lights

    D

    vessels over 20 meters in length must carry both range lights from sunset to sunrise


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    Large pipes or （） are fitted between the steam and water drums to ensure good natural circulation of water.
    A

    fire-tubes

    B

    furnaces

    C

    down-comers

    D

    soot-blowers


    正确答案： C
    解析： 暂无解析

  • 第13题：

    27． According to(根据) the passage, a good breakfast means _______．

    A． meat and fish

    B． eggs and rice

    C． a lot of food

    D． the right food


    正确答案：D
    27.D【解析】从“Eating the right food is needed for good health”可知．

  • 第14题：

    B

    Scientists are trying to make the deserts into good land again． They want to，bring water to the deserts． But more and more places of the earth is becoming deserts all the time， Scientists may not be able to change the deserts． Scientists think that people make deserts． People are do-ing bad things to the earth．

    Some places on the earth don-t get very much rain． But they still don-t become deserts．This is because some green plants are growing there． Small green plants and grass are very helpful to dry places． Plants don't let the wind blow the earth away． When 8 little bit of rain falls，the plants hold the water． Without plants，the land can become a desert much more easily．

    ( )26． Why can the land become a desert?

    A． Because some places don't get very much rain．

    B． Because plants don-t let the hot sun make the earth even drier．

    C． Because people don't keep the earth well．

    D． Because scientists haven-t learnt enough about the deserts．


    正确答案：C
    26.C【解析】文章第一段提供的信息表明良田变成了沙漠是人为的。故此题选C。

  • 第15题：

    27． Why does eating apples make one-s stomach want less food?

    A． Because apples are delicious．

    B． Because apples are full of fiber and water．

    C． Because apples are sour．

    D． Because only apples are filled with calories．


    正确答案：B
    27．B【解析】由文中减肥方法(3)可知“苹果中含有、 大量的纤维和水，可使你少吃饭”，故选B。

  • 第16题：

    Good anchorage may be obtained anywhere in this water area, the bottom being generally mud and sand, vessel may have ______.

    A.good getting ground

    B.good holding ground

    C.good grabbing ground

    D.good handling ground


    正确答案：B
    好锚地可以在这水域的任何地方获得，底质通常是泥和沙，船舶可以拥有好的锚地底质。

  • 第17题：

    To the scientists' delight, their efforts have increased people's _______of the importance of saving water.

    A．awareness
    B．commitment
    C．agreement
    D．response

    答案：A
    解析：
    考查名词辨析。句意为“让科学家们高兴的是，他们的努力增加了人们的节约用水的”。awareness"意识”，commitment“承诺”，agreement“合同，同意”，response“回应”。根据题意，只有A项符合逻辑。故选A。

  • 第18题：

    What is the situation about the desertification in Africa?

    A.The deserts are replaced with grasslands
    B.The deserts are expanding
    C.the deserts are moving northwards
    D.the deserts are being deserted

    答案：D
    解析：

  • 第19题：

    Rubbish can be thrown into the water （）.

    • A、in a harbour
    • B、in any place
    • C、25 miles off the land
    • D、10 miles off the land

    正确答案:C

  • 第20题：

    问答题
    Pollution is a problem because man, in an increasingly populated and industrialized world, is upsetting the environment in which he lives. Many scientists maintain that one of man’s greatest errors has been to equate growth with advancement. Now “growth” industries are being looked on with suspicion in case their side effects damage the environment and disrupt the relationship of different forms of life, the growing population makes increasing demands on the world’s fixed supply of air, water and land.

    正确答案：
    污染已成为问题,因为在当今人口越来越多,社会越来越工业化的世界上,人类正在污染他们居住的环境。许多科学家认为人类最大的错误是把发展和进步等同起来。现在人们以怀疑的态度看待“发展性”的产业,因为它们的副作用会破坏环境,破坏各种生命之间的关系。人口的增长导致对世界上有限的空气、水和土地的需求不断增长。
    解析： 暂无解析

  • 第21题：

    单选题
    If separating effect is not good, which measure should be taken （）
    A

    working at intervals and properly heating

    B

    warming up to 70℃, increase water supply flow

    C

    improving impulse of water supply

    D

    reducing water supply flow


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    What generally occurs when the land is cooler than the nearby water? （）
    A

    A land breeze

    B

    A sea breeze

    C

    A norther

    D

    A prevailing westerly


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When a tornado moves over the water from land it is called a（）.
    A

    Tornado

    B

    Waterspout

    C

    Hurricane

    D

    Cyclone


    正确答案： B
    解析： 暂无解析

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