网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
As it is used in paragraph 4 of the passage, the word "porous" means______.
A．having or full of holes
B．lacking physical strength, energy, or vigor
C．easily broken or hurt
D．powerful against harm.
参考答案
更多 “ As it is used in paragraph 4 of the passage, the word "porous" means______.A．having or full of holesB．lacking physical strength, energy, or vigorC．easily broken or hurtD．powerful against harm. ” 相关考题
考题
The passage implies that cellulose is a very porous substance because it contains______.A．a substance that creates pressureB．millions of tiny holesC．a substance that dissolves itD．liquid medicine
考题
Jae Kwon gave examples in Paragraph 4_________.A. to show chemical batteries are widely applied.B. to introduce nuclear batteries can be safely used.C. to describe a nuclear-powered system.D. to introduce various energy sources.
考题
The underline word “it” in the second paragraph refers to “ ” .A. the energy benefitB. the forest lossC. climate changeD. burning ethanol
考题
As used in this passage，the word “valid” in the second paragraph means______A. foreignB. 1egalC. monetaryD. illegal
考题
As used in this passage, "structures" means ______.A. enduranceB. organizationC. necessary partsD. energy
考题
In this passage, "learned" is used ______.A. as a word equal to "educated"B. as a word similar to "informed"C. as a word close to "acquired"D. as a word opposite to "popular"
考题
As used in the second sentence of the third paragraph, the word "unique" means ______.A) specialB) attractiveC) financialD) peculiar
考题
It isn't said in the passage that L-GG can be used to ______.A) lessen symptoms of Crohn's diseaseB) fight against rotavirusC) treat traveler' s diarrheaD) treat intestinal upsets caused by antibiotics
考题
Which of the following can' NOT be used as a pre-reading task?__________
A．Predicting what a passage is about.
B．Creating a word web related to a topic.
C．Listening to the recording of a passage.
D．Sharing what is already known about a topic.
考题
共用题干
Electromagnetic Energy1 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 EnergyB:The Most Important Source of EnergyC:Types of Electromagnetic EnergyD:The Machines Used for Energy GenerationE:Seeking New Sources of EnergyF:The Use of Ultravio1et Radiation in Medicine
考题
共用题干
Electromagnetic Energy1 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 5______A:Nuclear Reactions as the Lasting Source of the Sun's EnergyB:The Most Important Source of EnergyC:Types of Electromagnetic EnergyD:The Machines Used for Energy GenerationE:Seeking New Sources of EnergyF:The Use of Ultravio1et Radiation in Medicine
考题
共用题干
Electromagnetic Energy1 White light seems to be a combination of all colors.The energy that comes from a source of light isnot 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 hiddencracks 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 bettermethods of obtaining and using energy.Paragraph 4__________________A:Nuclear Reactions as the Lasting Source of the Sun's EnergyB:The Most Imoprtant Source of EnergyC:Types of Eleetromagnetie EnergyD:X-rays Are Used to Detect and Treat CancerE:Seeking New Sourees of EnergyF:Nuclear Energy Is Beginning to Compete With Coal
考题
共用题干
Electromagnetic Energy1 White light seems to be a combination of all colors.The energy that comes from a source of light isnot 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 hiddencracks 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 bettermethods of obtaining and using energy.Paragraph 3__________________A:Nuclear Reactions as the Lasting Source of the Sun's EnergyB:The Most Imoprtant Source of EnergyC:Types of Eleetromagnetie EnergyD:X-rays Are Used to Detect and Treat CancerE:Seeking New Sourees of EnergyF:Nuclear Energy Is Beginning to Compete With Coal
考题
Which of the following best describes the organization of the last paragraph of the passage？( ) A.An observation is made and qualifications of it are provided.
B.A phenomenon is noted and explanations for it are presented.
C.A hypothesis is presented and arguments against it are cited.
D.A prognosis is made and evidence supporting it is discussed.
考题
The AirMagnet passive site survey tool can provide RF coverage data， except for which parameter？（）A、Signal strength （4th access point）B、Signal strength （3rd access point）C、Channel interferenceD、Predictive physical data rate downlink （2nd access point）
考题
You need to select appropriate processing methods for the EmployeeAssignment measure group and the Employee dimension. Which method should you choose?（）A、Run a Process Update against the Employee dimension. Run a Process Full against the EmployeeAssignment measure group.B、Run a Process Full against the EmployeeAssignment measure group. Run a Process Update against the Employee dimension.C、Run a Process Full against the Employee dimension. Run a Process Incremental against the EmployeeAssignment measure group.D、Run a Process Incremental against the EmployeeAssignment measure group. Run a Process Full against the Employee dimension.
考题
In the context of Advanced Power Virtualization， the shared pool refers to which of the following？（）A、A pool of physical memory that can be used by any partitionB、A pool of physical processors that can be used by any virtual or dedicated partitionC、A pool of physical memory that can be used by multiple Micro-PartitionsD、A pool of physical processors that can be used by multiple Micro-Partitions
考题
单选题The third paragraph plays what role in the passage?A
It summarizes all the points expressed in the first two paragraphs.B
It raises new arguments that expand on those previously expressed.C
It suggests a possible area for useful research in the future.D
It rejects the arguments expressed in the first paragraph.E
It provides concrete evidence against arguments expressed in the second paragraph.
考题
单选题By definition，a "spar deck" is the（）.A
lower most continuous deck not broken by water tight bulkheadsB
after most weather deck above the main strength deckC
upper or weather deck above the main strength deckD
deck of light construction below the main or strength deck
考题
单选题Which of the following statements is true according to the passage?A
Oil energy has been popular with the manufacturing industry.B
Solar energy is too expensive for family use at present.C
Wind energy is much used in plateaus.D
Water energy is widely used in costal regions.
考题
单选题It can be inferred from the passage that more people will ______.A
use both non-renewable and renewable energyB
stick to the use of local utilityC
not be used to renewable energyD
use renewable energy only
考题
单选题What can we learn from the passage?A
Solar energy itself is expensive.B
Solar power will be used up very soon.C
Solar power is a kind of clean and useful energy.D
Solar power is much better than the other energies.
考题
单选题What is the relationship between “lactase” and “lactose” according to the passage?A
Lactase is indispensable to decomposing lactose.B
They both can act as a kind of enzyme.C
Lactase is the physical form of lactose.D
Lactase can be used to synthesize lactose.
考题
单选题In the first paragraph, the writer introduces the topic of the passage by ______.A
telling an interesting storyB
explaining the word “green”C
giving some special examples
考题
单选题The word “dissemination” underlined in Paragraph 4 means ______.A
plantationB
distributionC
receptionD
direction
考题
单选题Which of the following is TRUE according to the passage?A
We will be full of energy if we’re busy.B
Concentrating on things is a way to make people less bored.C
Time goes slowly when the brain is noticing many things at the same time.
考题
单选题The word “workaholic” is used in the passage to have.A
a positive implicationB
a negative implicationC
a neutral meaningD
a satirical meaning
热门标签
最新试卷
