单选题Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.A of the electromagnetic disturbances observed being the results of nuclea

题目
单选题
Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.
A

of the electromagnetic disturbances observed being the results of nuclear weapons testing

B

regarding the observed electromagnetic disturbances having been the results of nuclear weapons testing

C

that the electromagnetic disturbances observed were the results of nuclear weapons testing

D

that nuclear weapons testing resulted in the electromagnetic disturbances having been observed

E

that the electromagnetic disturbance observed were resulting from nuclear weapons testing

相似考题

1.Electromagnetic EnergyWhite light seems to be a combination of all colors. The energy that comes from a source of light is not limited to the kind of energy you can see. Heat is given off by a flame or an electric light. On a cloudy day it is possible to get a sunburn even though you feel cool. Visible light and the kind of energy that produce warmth and sunburn are examples of electromagnetic energy.The sun is 93 million miles from the earth. Yet we can use energy from the sun because electromagnetic energy travels through space.Many other kinds of energy are also types of electromagnetic energy. Radio, television, and radar signals travel from transmitters to receivers as low-energy electromagnetic waves. Infrared (红外线的) radiation is an electromagnetic wave. When it is absorbed by matter, heat is produced. Waves of infrared and visible light have more energy than waves of radio, television, or radar. Ultraviolet rays (紫外线) and X-rays are electromagnetic waves with even greater amounts of energy. Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is useful in killing certain disease organisms. X-rays and gamma rays have so mush energy that they travel right through solid objects. They can be used to detect and treat cancer. X-rays are used in industry to find hidden cracks in metal, and in medicine to reveal broken bones.Usually we use electricity to generate electromagnetic energy. The source of most of our energy is the sun. Heat from the sun causes water to evaporate. When the water falls to the earth as rain, some of it is trapped behind dams and then used to operate electric generators. Other generators are powered by coal, but the energy stored in coal came from the sun, too.Until recently, the source of the tremendous amount of energy given off by the sun was a puzzle. If the sun depended on chemical reactions, it would have used up all its energy long ago. Experiments with electromagnetic radiation led to the theory that mass can be converted into energy. About forty years after the theory was proposed, nuclear energy was harnessed (利用) by man. Chemical energy comes from electron (电子) rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemical reactions, nuclear reactions release millions of times more energy per pound of fuel. We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium(氦).Nuclear energy is beginning to compete with coal as an economical source of power to generate electricity. It is also being used to operate engines in large ships. Scientists continue to seek new and better methods of obtaining and using energy.A. Nuclear Reactions as the Lasting Source of the Sun's EnergyB. The Most Important Source of EnergyC. Types of Electromagnetic EnergyD. X-rays Are Used to Detect and Treat Cancer.E. Seeking New Sources of EnergyF. Nuclear Energy is Beginning to Compete with CoalParagraph 3 ______

2.— Have you moved into the new house?— No yet, the rooms _____.A are being paintedB are paintingC are paintedD are being painting

3.A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem()。A.A remote physical layer problem exists.B.The host NIC is not functioning.C.TCP/IP has not been correctly installed on the host.D.A local physical layer problem exists.

4.Trademarks, proprietary service marks and regulations need _____ carefully.A to be observed ;B be observed ;C being observed

更多“单选题Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.A of the electromagnetic disturbances observed being the results of nuclea”相关问题

  • 第1题：

    If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur ________．

    A.A pawl，forced by a spring mechanism，will engage the teeth of the bull gear and hold the load

    B.An electromagnetic brake will hold the load where it is suspended

    C.The load will fall rapidly to the deck unless the foot brake is engaged

    D.The load will slowly lower to the deck under control of the drag of the winch motor


    正确答案：B

  • 第2题：

    His presentation will show you ____ can be used in other contexts.

    A. that you have observed
    B. that how you have observed
    C. how that you have observed
    D. how what you have observed

    答案：D
    解析：
    考查从句。show sb sth结构，这里sth是how引导的宾语从句，宾语从句中缺主语，what引导的主语从句，翻译为“所??的”what作observe的宾语。句意为“他的发言将向你展示，你所观察到的如何被用于其他语境”。所以正确答案为D。

  • 第3题：

    共用题干
    Electromagnetic Energy

    1 White light seems to be a combination of all colors.The energy that comes from a source of light is
    not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy
    day it is possible to get a sunburn even though you feel cool.Visible light and the kind of energy that produce
    warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles away from the earth.Yet we can use energy from the sun because elec-
    tromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signals
    travel from transmitters to receivers as low-energy electromagnetic waves. Infrared（红外线的）radiation is an
    electromagnetic wave.When it is absorbed by matter,heat is produced.Waves of infrared and visible light
    have more energy than waves of radio , television , or radar. Ultraviolet rays（紫外线）and X-rays are electro-
    magnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating
    buildings.Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is
    useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel right
    through solid objects.They can be used to detect and treat cancer. X-rays are used in industry to find hidden
    cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the
    sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is
    trapped behind dams and then used to operate electric generators.Other generators are powered by coal,but
    the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If
    the.sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with
    electromagnetic radiation led to the theory that mass can be converted into energy.About forty years after the
    theory was proposed , nuclear energy was harnessed（利用）by man. Chemical energy comes from electron
    （电子）rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemi-
    cal reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that
    the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of power to generate elec-
    tncity.It is also being used to operate engines in large ships.Scientists continue to seek new and better
    methods of obtaining and using energy.

    The energy stored in coal_____________.
    A:electromagnetic energy
    B:electromagnetic energy travels through space
    C:came from the sun
    D:when a change in the nucleus of an atom takes place
    E:when the sunrays are fierce
    F:chemical energy is generated

    答案：C
    解析：
    第三段的第一句为主题句，意为：许多其他种类的能量也是不同类型的电磁能。该段列举了电磁能的具体例子，C项“Types of Electromagnetic Energy（电磁能的类型）”与主题句意思吻合，故选C。
    第四段的第二句为主题句，意为：我们的能量大多来自太阳。B项“The Most ImportantSource of Energy（最重要的能量来源）”与主题句意思吻合，故选B。
    第五段的最后一句为主题句，意为：我们现在相信太阳的能量来自核反应，在此过程 中，氢转变为氦。A项“Nuclear Reactions as the Lasting Source of the Sun ' s Energy（核反应是太阳能最持久的来源）”与主题句意思吻合，故选A。
    第六段的最后一句为主题句，意为：科学家仍在继续寻找获取和使用能量的新的、更好 的方法。E项“Seeking New Sources of Energy（寻找新的能源）”与主题句意思吻合，故选E。
    第一段的最后一句指出，“可见光和其他能产生热量和造成晒伤的能量都是电磁能的例子”。故选A。
    第二段的第二句指出，“我们能使用太阳能，因为电磁能可以在太空中穿梭”。故选B。
    第四段的最后一句指出，“其他的发电机靠煤炭驱动，但是，煤炭中储存的能量也来自 于太阳”。C项中的“came from the sun（来自太阳）”与原句意思相符，故选C。
    第五段的第五句指出，化学能来自于电子重组。故选F。第4部分：阅读理解第一篇 本文的主要内容是建筑工程师研究世贸大厦遗址及其周围幸存的建筑以设计出能够抵杭恐 怖袭击和爆炸的建筑。

  • 第4题：

    共用题干
    Electromagnetic Energy
    1 White light seems to be a combination of all colors.The energy that comes from a source of light is not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy day it is possible to get a sunburn even though you feel cool.Visible light and the kinds of energy that produce warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles from the earth.Yet we can use energy from the sun because electromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signals travel from transmitters to receivers as low-energy electromagnetic waves.Infrared（红外线的）radiation is an electromagnetic wave.When it is absorbed by matter,heat is produced.Waves of infrared and visible light have more energy than waves of radio,television,or radar.Ultraviolet rays（紫外线）and X-rays are electromagnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living.Ultraviolet radiation is useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel through solid objects. They can be used to detect and treat cancer.X-rays are used in industry to find hidden cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is trapped behind dams and then used to operate electric generators.Other generators are powered by coal,but the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with electromagnetic radiation led to the theory that mass can be converted into energy.About forty years after the theory was proposed , nuclear energy was harnessed（利用）by man.Chemical energy comes from electron （电子）rearrangement.Nuclear energy comes from a change in the nucleus of an atom.Compared with chemical reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of'power to generate electricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better methods of obtaining and using energy.

    Paragraph 4______
    A:Nuclear Reactions as the Lasting Source of the Sun's Energy
    B:The Most Important Source of Energy
    C:Types of Electromagnetic Energy
    D:The Machines Used for Energy Generation
    E:Seeking New Sources of Energy
    F:The Use of Ultravio1et Radiation in Medicine

    答案：B
    解析：
    通读文章可知，第三段第一句是段落主题句，紧接着围绕第一句进行了具体阐述，根据第一句中出现的“types of electromagnetic energy”可知，第三段主要讲述几种不同种类的电磁能，应选择C项。
    根据第四段第一、二句可知，我们通常用电来生成电磁能，使用的很多能源都来自太阳。紧接着又表明，水能源于来自太阳的热能，煤储存的能量也是来自太阳。因此不难得出，第四段讲的是能量最重要的来源，即太阳。
    第五段开头提到太阳能的来源仍是个谜，随后对此进行了分析，最后得出太阳能来自核反应释放的能量。由此可知，第五段主要讲的是，氢原子转变为氦原子的核反应释放的能量是太阳能的来源。几个选项中只有A项提到核反应是太阳能的持久来源，因此选择A项。
    通读文章可知，第六段的最后一句是主题句。这句话的大意是：科学家正继续在寻找更好的新方法来获取并使用能源。几个选项中只有E项与之契合，因此选择E项。
    根据第一段第四句可知，你即便在感到凉爽的阴天，也有可能被阳光灼伤，因此选择B项。
    根据第三段第三、四句可知，红外线是电磁波，当它被物质吸收时，会产生能量。
    根据第三段倒数第二、三句可知，X射线和伽马射线之所以能用来探测和治疗癌症，是因为具有很多能量的x射线和伽马射线能穿透固体。
    根据第五段第五句可知，化学能是在电子重组时产生的。

  • 第5题：

    共用题干
    Electromagnetic Energy

    1 White light seems to be a combination of all colors.The energy that comes from a source of light is
    not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy
    day it is possible to get a sunburn even though you feel cool.Visible light and the kind of energy that produce
    warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles away from the earth.Yct we can use energy from die sun because elec-
    tromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signais
    travel from transmitters to receivers as low-energy electromagnetic waves. Infrared（红外线的）radiation is an
    electromagnetic wave.When it is absorbed by matter,heat is produced.Wayes of infrared and visible light
    have more energy than waves of radio,television,or radar. Ultraviolet rays（紫外线）and X-rays are eleetro-
    magnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating
    buildings.Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is
    useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel right
    through solid objects.They can be used to detect and treat cancer。 X-rays are used in industry to find hidden
    cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the
    sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is
    trapped behind dams and then used to operate electric generators,Other generators are powered by coal,but
    the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If
    the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with
    electromagnetic radiation led to the theory that mass can be converted into energy．入bout forty years after the
    theory was proposed , nuclear energy was harnessed（利用）by man. Chemical energy comes from electron
    （电子）rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemi-
    cal reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that
    the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of power to generate elec-
    tricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better
    methods of obtaining and using energy.

    We can use energy from the sun because_______________.
    A:electromagnetic energy
    B:electromagnetic energy travels through space
    C:came from the sun
    D:when a change in the nucleus of an atom takes place
    E:whlen the sunrays are fierce
    F:chemical energy is generated

    答案：B
    解析：
    第三段的第一句为主题句，意为：许多其他种类的能量也是不同类型的电磁能。该段 列举了电磁能的具体例子，C项“Types of Electromagnetic Energy（电磁能的类型）”与主题句意 思吻合，故选C。
    第四段的第二句为主题句，意为：我们的能量大多来白太阳。B项“The Most Important Source of Energy（最重要的能量来源）”与主题句意思吻合，故选B。
    第五段的最后一句为主题句，意为；我们现在相信太阳的能量来自核反应，在此过程 中，氢转变为氦。A项“Nuclear Reactions as the Lasting Source of the Sun' s Energy（核反应是太 阳能最持久的来源）”与主题句意思吻合，故选A。
    第六段的最后一句为主题句，意为：科学家仍在继续寻找获取和使用能量的新的、更好 的方法。E项“Seeking New Sources of Energy（寻找新的能源）”与主题句意思吻合，故选E。
    第一段的最后一句指出，“可见光和其他能产生热量和造成晒伤的能量都是电磁能的 例子”。故选A。
    第二段的第二句指出，“我们能使用太阳能，因为电磁能可以在太空中穿梭”。故选B。
    第四段的最后一句指出，“其他的发电机靠煤炭驱动，但是，煤炭中储存的能量也来自 于太阳”。C项中的“came from the sun (来自太阳）”与原句意思相符，故选C。
    第五段的第五句指出，化学能来自于电子重组。故选F。第4部分：阅读理解第一篇 本文介绍了引起食物中毒的原因及食物中毒的预防和治疗处理措施。

  • 第6题：


    The primary purpose of the passage is to( )

    A.explain the difference between natural and man-made radiation
    B.arouse concern about the risks connected with exposure to radiation
    C.publicize the results of British medical survey
    D.advocate limiting the use of atomic weapons testing，since the fallout is extremely hazardous

    答案：B
    解析：

  • 第7题：

    Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is oftype java.lang.String and the attribute score is of type java.lang.Integer. An array of com.example. GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally，an empty java.util.HashMap called resultMap is placed in the page scope. A JSP page needs to add the firstentry in results to resultMap， storing the name attribute of the bean as the key and the score attribute of thebean as the value. Which code snippet of JSTL code satisfies this requirement？（）

    • A、${resultMap[results[0].name] = results[0].score}
    • B、<c：set var="${resultMap}" key="${results[0].name}" value="${results[0].score}" />
    • C、<c：set var="resultMap" property="${results[0].name}"> ${results[0].value}</c：set>
    • D、<c：set var="resultMap" property="${results[0].name}" value="${results[0].score}" />
    • E、<c：set target="${resultMap}" property="${results[0].name}" value="${results[0].score}" />

    正确答案:E

  • 第8题：

    单选题
    Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is oftype java.lang.String and the attribute score is of type java.lang.Integer. An array of com.example. GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally，an empty java.util.HashMap called resultMap is placed in the page scope. A JSP page needs to add the firstentry in results to resultMap， storing the name attribute of the bean as the key and the score attribute of thebean as the value. Which code snippet of JSTL code satisfies this requirement？（）
    A

    ${resultMap[results[0].name] = results[0].score}

    B

    <c：set var=${resultMap} key=${results[0].name} value=${results[0].score} />

    C

    <c：set var=resultMap property=${results[0].name}> ${results[0].value}</c：set>

    D

    <c：set var=resultMap property=${results[0].name} value=${results[0].score} />

    E

    <c：set target=${resultMap} property=${results[0].name} value=${results[0].score} />


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Which is NOT a safety precaution to be observed during the loading of LFG?（）
    A

    Report any leakage of cargo

    B

    Make sure the rake ends of the barge are completely dry and mopped

    C

    Ascertain that the hoses to be used are in good order

    D

    Be on the lookout for work being accomplished ashore in the vicinity of the barges


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem（）。
    A

    A remote physical layer problem exists.

    B

    The host NIC is not functioning.

    C

    TCP/IP has not been correctly installed on the host.

    D

    A local physical layer problem exists.


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    Vessels shall be deemed to be in sight of one another only when one（）from the other.
    A

    can be observed visually

    B

    can be observed by radar

    C

    can be located on the radar

    D

    can be heard


    正确答案： C
    解析： 暂无解析

  • 第12题：

    单选题
    The device that most commonly utilizes the principle of electromagnetic induction is the（）.
    A

    diode

    B

    transformer

    C

    transistor

    D

    rheostat


    正确答案： D
    解析： 暂无解析

  • 第13题：

    If kinking results while wire rope is being coiled clockwise, you should______.

    A.coil it counterclockwise

    B.not coil it

    C.take a turn under

    D.twist out the kinks under a strain


    正确答案：C
    当顺时针盘绕钢丝绳时有绞缠，你应转动一下。

  • 第14题：

    共用题干
    Electromagnetic Energy
    1 White light seems to be a combination of all colors.The energy that comes from a source of light is not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy day it is possible to get a sunburn even though you feel cool.Visible light and the kinds of energy that produce warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles from the earth.Yet we can use energy from the sun because electromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signals travel from transmitters to receivers as low-energy electromagnetic waves.Infrared（红外线的）radiation is an electromagnetic wave.When it is absorbed by matter,heat is produced.Waves of infrared and visible light have more energy than waves of radio,television,or radar.Ultraviolet rays（紫外线）and X-rays are electromagnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living.Ultraviolet radiation is useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel through solid objects. They can be used to detect and treat cancer.X-rays are used in industry to find hidden cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is trapped behind dams and then used to operate electric generators.Other generators are powered by coal,but the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with electromagnetic radiation led to the theory that mass can be converted into energy.About forty years after the theory was proposed , nuclear energy was harnessed（利用）by man.Chemical energy comes from electron （电子）rearrangement.Nuclear energy comes from a change in the nucleus of an atom.Compared with chemical reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of'power to generate electricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better methods of obtaining and using energy.

    Infrared radiation can produce heat______.
    A:when it is absorbed by matter
    B:when it is cloudy
    C:because they can pass through solid objects
    D:when the sunrays are fierce.
    E:when a change in the nucleus of an atom takes place
    F:when electron rearrangement takes place

    答案：A
    解析：
    通读文章可知，第三段第一句是段落主题句，紧接着围绕第一句进行了具体阐述，根据第一句中出现的“types of electromagnetic energy”可知，第三段主要讲述几种不同种类的电磁能，应选择C项。
    根据第四段第一、二句可知，我们通常用电来生成电磁能，使用的很多能源都来自太阳。紧接着又表明，水能源于来自太阳的热能，煤储存的能量也是来自太阳。因此不难得出，第四段讲的是能量最重要的来源，即太阳。
    第五段开头提到太阳能的来源仍是个谜，随后对此进行了分析，最后得出太阳能来自核反应释放的能量。由此可知，第五段主要讲的是，氢原子转变为氦原子的核反应释放的能量是太阳能的来源。几个选项中只有A项提到核反应是太阳能的持久来源，因此选择A项。
    通读文章可知，第六段的最后一句是主题句。这句话的大意是：科学家正继续在寻找更好的新方法来获取并使用能源。几个选项中只有E项与之契合，因此选择E项。
    根据第一段第四句可知，你即便在感到凉爽的阴天，也有可能被阳光灼伤，因此选择B项。
    根据第三段第三、四句可知，红外线是电磁波，当它被物质吸收时，会产生能量。
    根据第三段倒数第二、三句可知，X射线和伽马射线之所以能用来探测和治疗癌症，是因为具有很多能量的x射线和伽马射线能穿透固体。
    根据第五段第五句可知，化学能是在电子重组时产生的。

  • 第15题：

    共用题干
    Electromagnetic Energy

    1 White light seems to be a combination of all colors.The energy that comes from a source of light is
    not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy
    day it is possible to get a sunburn even though you feel cool.Visible light and the kind of energy that produce
    warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles away from the earth.Yet we can use energy from the sun because elec-
    tromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signals
    travel from transmitters to receivers as low-energy electromagnetic waves. Infrared（红外线的）radiation is an
    electromagnetic wave.When it is absorbed by matter,heat is produced.Waves of infrared and visible light
    have more energy than waves of radio , television , or radar. Ultraviolet rays（紫外线）and X-rays are electro-
    magnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating
    buildings.Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is
    useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel right
    through solid objects.They can be used to detect and treat cancer. X-rays are used in industry to find hidden
    cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the
    sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is
    trapped behind dams and then used to operate electric generators.Other generators are powered by coal,but
    the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If
    the.sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with
    electromagnetic radiation led to the theory that mass can be converted into energy.About forty years after the
    theory was proposed , nuclear energy was harnessed（利用）by man. Chemical energy comes from electron
    （电子）rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemi-
    cal reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that
    the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of power to generate elec-
    tncity.It is also being used to operate engines in large ships.Scientists continue to seek new and better
    methods of obtaining and using energy.

    Paragraph 5_____________
    A:Nuclear Reactions as the Lasting Source of the Sun's Energy
    B:The Most Important Source of Energy
    C:Types of Electromagnetic Energy
    D:X-rays Are Used to Detect and Treat Cancer
    E:Seeking New Sources of Energy
    F:Nuclear Energy Is Beginning to Compete With Coal

    答案：A
    解析：
    第三段的第一句为主题句，意为：许多其他种类的能量也是不同类型的电磁能。该段列举了电磁能的具体例子，C项“Types of Electromagnetic Energy（电磁能的类型）”与主题句意思吻合，故选C。
    第四段的第二句为主题句，意为：我们的能量大多来自太阳。B项“The Most ImportantSource of Energy（最重要的能量来源）”与主题句意思吻合，故选B。
    第五段的最后一句为主题句，意为：我们现在相信太阳的能量来自核反应，在此过程 中，氢转变为氦。A项“Nuclear Reactions as the Lasting Source of the Sun ' s Energy（核反应是太阳能最持久的来源）”与主题句意思吻合，故选A。
    第六段的最后一句为主题句，意为：科学家仍在继续寻找获取和使用能量的新的、更好 的方法。E项“Seeking New Sources of Energy（寻找新的能源）”与主题句意思吻合，故选E。
    第一段的最后一句指出，“可见光和其他能产生热量和造成晒伤的能量都是电磁能的例子”。故选A。
    第二段的第二句指出，“我们能使用太阳能，因为电磁能可以在太空中穿梭”。故选B。
    第四段的最后一句指出，“其他的发电机靠煤炭驱动，但是，煤炭中储存的能量也来自 于太阳”。C项中的“came from the sun（来自太阳）”与原句意思相符，故选C。
    第五段的第五句指出，化学能来自于电子重组。故选F。第4部分：阅读理解第一篇 本文的主要内容是建筑工程师研究世贸大厦遗址及其周围幸存的建筑以设计出能够抵杭恐 怖袭击和爆炸的建筑。

  • 第16题：

    --Have you moved into the new house?
    --Not yet．The room__.

    A.is being painted
    B.are painting
    C.are painted
    D.are being painted

    答案：A
    解析：
    本句使用被动语态的进行时。

  • 第17题：

    共用题干
    Electromagnetic Energy

    1 White light seems to be a combination of all colors.The energy that comes from a source of light is
    not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy
    day it is possible to get a sunburn even though you feel cool.Visible light and the kind of energy that produce
    warmth and sunburn are examples of electromagnetic energy.
    2 The sun is 93 million miles away from the earth.Yct we can use energy from die sun because elec-
    tromagnetic energy travels through space.
    3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signais
    travel from transmitters to receivers as low-energy electromagnetic waves. Infrared（红外线的）radiation is an
    electromagnetic wave.When it is absorbed by matter,heat is produced.Wayes of infrared and visible light
    have more energy than waves of radio,television,or radar. Ultraviolet rays（紫外线）and X-rays are eleetro-
    magnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating
    buildings.Sunlight and electric lights are part of our requirements for normal living. Ultraviolet radiation is
    useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel right
    through solid objects.They can be used to detect and treat cancer。 X-rays are used in industry to find hidden
    cracks in metal,and in medicine to reveal broken bones.
    4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the
    sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is
    trapped behind dams and then used to operate electric generators,Other generators are powered by coal,but
    the energy stored in coal came from the sun,too.
    5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If
    the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with
    electromagnetic radiation led to the theory that mass can be converted into energy．入bout forty years after the
    theory was proposed , nuclear energy was harnessed（利用）by man. Chemical energy comes from electron
    （电子）rearrangement. Nuclear energy comes from a change in the nucleus of an atom. Compared with chemi-
    cal reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that
    the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium（氦）.
    6 Nuclear energy is beginning to compete with coal as an economical source of power to generate elec-
    tricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better
    methods of obtaining and using energy.

    Paragraph 4__________________
    A:Nuclear Reactions as the Lasting Source of the Sun's Energy
    B:The Most Imoprtant Source of Energy
    C:Types of Eleetromagnetie Energy
    D:X-rays Are Used to Detect and Treat Cancer
    E:Seeking New Sourees of Energy
    F:Nuclear Energy Is Beginning to Compete With Coal

    答案：B
    解析：
    第三段的第一句为主题句，意为：许多其他种类的能量也是不同类型的电磁能。该段 列举了电磁能的具体例子，C项“Types of Electromagnetic Energy（电磁能的类型）”与主题句意 思吻合，故选C。
    第四段的第二句为主题句，意为：我们的能量大多来白太阳。B项“The Most Important Source of Energy（最重要的能量来源）”与主题句意思吻合，故选B。
    第五段的最后一句为主题句，意为；我们现在相信太阳的能量来自核反应，在此过程 中，氢转变为氦。A项“Nuclear Reactions as the Lasting Source of the Sun' s Energy（核反应是太 阳能最持久的来源）”与主题句意思吻合，故选A。
    第六段的最后一句为主题句，意为：科学家仍在继续寻找获取和使用能量的新的、更好 的方法。E项“Seeking New Sources of Energy（寻找新的能源）”与主题句意思吻合，故选E。
    第一段的最后一句指出，“可见光和其他能产生热量和造成晒伤的能量都是电磁能的 例子”。故选A。
    第二段的第二句指出，“我们能使用太阳能，因为电磁能可以在太空中穿梭”。故选B。
    第四段的最后一句指出，“其他的发电机靠煤炭驱动，但是，煤炭中储存的能量也来自 于太阳”。C项中的“came from the sun (来自太阳）”与原句意思相符，故选C。
    第五段的第五句指出，化学能来自于电子重组。故选F。第4部分：阅读理解第一篇 本文介绍了引起食物中毒的原因及食物中毒的预防和治疗处理措施。

  • 第18题：

    The export sewing machines （） in stout water-proof material,and （） in pairs in light-weight crates.

    • A、are wrapped；being packed
    • B、are wrapping；packing
    • C、are wrapped；packed
    • D、being wrapped；are packed

    正确答案:C

  • 第19题：

    单选题
    The NIF process of nuclear fusion involves ______.
    A

    high lab temperatures of about 10 million Celsius

    B

    ultra powerful lasers being used to produce huge gravitational pressure

    C

    deuterium and helium being fused together to form tritium

    D

    delivering ultraviolet energy to hit the target


    正确答案： C
    解析：
    题目问的是：NIF的核聚变步骤包括什么？从文章第16段“When all NIF lasers are fired at full energy, they will deliver 1.8 megajoules of ultraviolet energy to the target.”可知，会传递紫外线能量来击中目标。故选D。

  • 第20题：

    单选题
    If kinking results while wire rope is being coiled clockwise，you should（）.
    A

    coil it counterclockwise

    B

    not coil it

    C

    take a turn under

    D

    twist out the kinks under a strain


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Hiper is being planned ______.
    A

    to compete with NIF

    B

    because NIF experiment, even successful, would not produce enough energy to run a nuclear fusion plant

    C

    to use the same laser technology but on a larger scale

    D

    to demonstrate the feasibility of nuclear fusion


    正确答案： B
    解析：
    题目问的是：Hiper正在被设计的原因是什么？根据文章的倒数第7段中的“This is right for the demonstration of the physics ‘proof of principle’, but does not meet the requirement of a laser fusion power plant.”可知，试验很好地演示了物理原理的证明，但是不能满足激光核聚变动力装置的需求，也就是说没有足够的能量来运作核聚变装置。故选B。

  • 第22题：

    单选题
    （）means an observed situation where objective evidence indicates the non-fulfillment of a specified requirement.
    A

    Conformity

    B

    Non-conformity

    C

    Observation

    D

    Major non-conformity


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.
    A

    of the electromagnetic disturbances observed being the results of nuclear weapons testing

    B

    regarding the observed electromagnetic disturbances having been the results of nuclear weapons testing

    C

    that the electromagnetic disturbances observed were the results of nuclear weapons testing

    D

    that nuclear weapons testing resulted in the electromagnetic disturbances having been observed

    E

    that the electromagnetic disturbance observed were resulting from nuclear weapons testing


    正确答案： A
    解析：
    A、B项不符合习惯表达；D项的表达与句意不符；E项中“disturbance…were”主谓不一致，故本题选C项。

  • 第24题：

    单选题
    If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur?（）
    A

    A pawl，forced by a spring mechanism，will engage the teeth of the bull gear and hold the load

    B

    An electromagnetic brake will hold the load where it is suspended

    C

    The load will fall rapidly to the deck unless the foot brake is engaged

    D

    The load will slowly lower to the deck under control of the drag of the winch motor


    正确答案： D
    解析： 暂无解析

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