M1U1 Energy 能量 科普英语初中高年级版2015年
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能源科普英文作文范文高中"英文,"Energy is an essential aspect of our daily lives, driving everything from our morning coffee brewing to the lights we turn off at night. Understanding energy and its various forms is crucial, not just for scientists but for everyone. Let's dive into a comprehensive explanation of energy, its types, sources, and significance.Firstly, let's talk about energy in general terms. Energy is the capacity to do work. It comes in various forms such as kinetic energy (energy of motion), potential energy (stored energy), thermal energy (heat energy), chemical energy (energy stored in bonds of atoms and molecules), and so on. Think about a ball sitting at the edge of a table. It has potential energy because if it falls, it can do work by moving or hitting something.Now, let's explore the different types of energysources. We have renewable energy sources like solar, wind, hydro, and geothermal energy. These sources are replenished naturally and are sustainable in the long run. For example, solar energy utilizes sunlight to generate electricity through photovoltaic cells. On the other hand, we have non-renewable energy sources such as fossil fuels (coal, oil, natural gas) and nuclear energy. These sources are finite and emit pollutants when burned, contributing to environmental issues like air pollution and climate change.Understanding the significance of energy is vital. It drives economic growth, powers industries, and enhances our quality of life. Imagine a world without electricity, where there are no lights, no internet, and no transportation systems. Energy is the backbone of modern civilization.Now, let's switch gears and discuss this topic in Chinese."中文,"能源是我们日常生活中至关重要的一部分,推动着从我们早上煮咖啡到晚上关灯睡觉的一切。
能源知识科普英文Energy Knowledge Primer.In today's fast-paced world, energy is a fundamental component that drives our daily lives. From powering our homes and offices to fueling our transportation systems, energy is essential for the functioning of modern society. However, the complexity of energy sources, their production, and their impact on the environment often leave us with many questions. This primer aims to provide a comprehensive overview of energy knowledge, covering various aspects such as energy sources, energy conversion, energy conservation, and sustainable energy practices.Types of Energy Sources.Energy sources can be broadly classified into two categories: renewable and non-renewable.Renewable Energy Sources: These are energy sourcesthat are naturally replenished and can be used indefinitely without depleting the Earth's resources. Common examples include solar energy, wind energy, hydroelectric power, biomass, and geothermal energy. Solar energy, for instance, harnesses the sun's rays to generate electricity or heat, while wind energy utilizes the kinetic energy of wind to turn turbines and generate power.Non-Renewable Energy Sources: Also known as fossil fuels, these are energy sources that are finite and take millions of years to form. The most.。
八年级英语科学知识练习题30题(答案解析)1.The light from the sun is very bright. It is a form of_____.A.sound energyB.electric energyC.heat energyD.light energy答案解析:D。
太阳发出的光是一种光能。
A 选项“sound energy”是声能;B 选项“electric energy”是电能;C 选项“heat energy”是热能。
本题考查科学知识,同时也考查了词汇的理解。
2.When you push a box on the ground, you are applying_____.A.forceB.pressureC.energyD.power答案解析:A。
当你在地面上推一个箱子时,你在施加力。
B 选项“pressure”是压力;C 选项“energy”是能量;D 选项“power”是功率。
本题考查物理概念和词汇理解。
3.Water freezes at_____.A.0 degrees CelsiusB.100 degrees CelsiusC.32 degrees FahrenheitD.212 degrees Fahrenheit答案解析:A。
水在0 摄氏度时结冰。
B 选项100 摄氏度是水沸腾的温度;C 选项32 华氏度相当于0 摄氏度,但题干问的是摄氏度;D 选项212 华氏度是水的沸点对应的华氏温度。
本题考查科学常识和数字表达。
4.A magnet can attract_____.A.plasticB.paperC.woodD.iron答案解析:D。
磁铁能吸引铁。
A 选项“plastic”是塑料;B 选项“paper”是纸;C 选项“wood”是木头,这三个都不能被磁铁吸引。
本题考查物理知识和词汇。
5.When an object is at rest, it has no_____.A.massB.volumeC.velocityD.density答案解析:C。
M1U2 Heat is part of our everyday lives热是我们日常生活的一部分⊙Warm-up 热身Many animals, such as bears, foxes, and rabbits, have thick fur that protects them from the cold and helps keep their body temperature warm. Do you know how the penguins living in the South Pole keep themselves warm?许多动物,如熊、狐狸和兔子,都有厚厚的皮毛,可以保护它们不受寒冷,并帮助保持体温的温暖。
你知道在南极的企鹅是如何保持温暖的吗?⊙Big question to think about while you read 你读的时候要思考的大问题What is the impact of the heat on our life? 热对我们的生活有什么影响?⊙Content Vocabulary 内容词汇1. conductor n. something that allows electricity or heat to travel along it or through it导体能使电力或热能沿着它或通过它的东西2.ceramic n. the art of making pots, bowls. tiles, etc. by shaping pieces of clay and baking them until they are hard or things that are made this way 陶瓷制作盆、碗的艺术。
通过塑造一块粘土和烘烤他们的方式,直到他们成为硬的东西3. instrument n. a small tool used in work such as science or medicine 仪器在科学或医学等工作中使用的小工具4. mercury n. a heavy silver-white poisonous metal that is liquid at ordinary temperatures, and is used in the thermometers 汞一个沉重的银白色有毒金属在常温下是液体,常用于温度计⊙Heat causes changes 热导致变化We have seen how energy is transferred in the form of heat. Heat can cause major changes in substances. For example, when water is heated, it changes from a liquid to a gas. Ice, which is the solid form of water, changes to a liquid when it is heated.Water changes constantly around us as part of the water cycle. Heat has other effects on materials. There are some materials that expand, or get bigger, when they are heated.For example, metal expands. If you cannot unscrew the metal lid of a jar of mustard,it is easier to unscrew the lid if you first put the lid in hot water for a few minutes. In this way,heat from the hot water will make the metal of the lid expand. This allows you to open the lid more easily.In contrast. some materials tend to contract,or get smaller, when they get cold. For example, the metal lid on the mustard jar will get tighter as it cools in the refrigerator.我们已经看到了能量是如何以热量的形式转移的。
物理学名词中英文索引-苏科版八年级物理下册教案一、引言物理学名词是物理学中重要的基础知识,构成了物理学知识体系的核心部分。
因此,在学习物理学的过程中,我们需要掌握各种物理学名词的中英文表达。
本文档整理了苏科版八年级物理下册所涉及的物理学名词中英文索引,以方便学生在学习过程中查询和掌握相关的知识点。
二、物理学名词中英文索引1.机械•力(force)•质量(mass)•重力(weight)•动量(momentum)•冲量(impulse)•功(work)•功率(power)•动能(kinetic energy)•势能(potential energy)•机械能(mechanical energy)•动摩擦力(kinetic friction)•静摩擦力(static friction)•滑动摩擦(sliding friction)•滚动摩擦(rolling friction)•阻力(resistance)2.热学•温度(temperature)•热(heat)•热量(thermal energy)•热容(heat capacity)•比热容(specific heat capacity)•相变(phase change)•融化(melting)•凝固(solidification)•沸腾(boiling)•冷凝(condensation)•蒸发(evaporation)•热传导(heat conduction)•热对流(heat convection)•辐射传热(radiation)3.光学•光线(ray)•光程(optical path length)•反射(reflection)•折射(refraction)•球面镜(spherical mirror)•光谱(spectrum)•散射(scattering)•像(image)•物距(object distance)•像距(image distance)•焦距(focal length)•放大率(magnification)4.电学•电路(circuit)•电压(voltage)•电流(current)•电阻(resistor)•电容(capacitor)•电感(inductor)•欧姆定律(Ohm’s law)•布尔定律(Kirchhoff’s law)•磁通量(magnetic flux)•磁场线(magnetic field lines)•交流电(alternating current)•直流电(direct current)三、总结物理学名词的学习和掌握是学习物理学的基础。
九年级英语科普短文单选题40题(答案解析)1.The ______ of the sun gives us light and heat.A.energyB.powerC.forceD.strength答案:A。
“energy”表示能量,太阳的能量给我们带来光和热;“power”主要指权力、动力等;“force”强调武力、暴力等;“strength”指力量、力气等。
这里太阳提供的是能量,所以选A。
2.The ______ of plants is important for the ecosystem.A.growthB.developmentC.productionD.life答案:A。
“growth”表示生长,植物的生长对生态系统很重要;“development”发展,更侧重整体的进步;“production”生产,通常指工业生产等;“life”生命,这里强调植物的生长状态,所以选A。
3.The ______ of water is essential for living things.A.purityB.cleanlinessC.supplyD.source答案:C。
“purity”纯度;“cleanliness”清洁;“supply”供应,水的供应对生物很关键;“source”来源,这里强调的是水的供应,所以选C。
4.The ______ of air pollution is a serious problem.A.levelB.degreeC.amountD.extent答案:D。
“level”水平;“degree”程度;“amount”数量;“extent”程度、范围,空气污染的范围是一个严重的问题,这里extent 更强调范围,所以选D。
5.The ______ of sound can be measured in decibels.A.intensityB.volumeC.pitchD.tone答案:A。
能源科学导论(Introduction to energy science)能源科学导论(Introduction to energy science)To save energy-- -- saving electricityIn this paper,The earth's resources are very limited, and the resources of the region may be exhausted in the near future. Electric energy is a fast, convenient, clean, pollution-free, energy conversion efficiency high green energy, has been widely used in all walks of life and family. But, after all, electricity is secondary energy, and every productionkilowatt-hour is equivalent to 0.4 kg of standard coal consumption and 4 litres of water, at the same time produce 0.272 kilograms carbon dust, 0.997 kg of carbon dioxide, and 0.03 kg of sulfur dioxide emissions, in the same way, every once electricity saving, can save 0.4 kg of standard coal, reduce sulfur dioxide, 0.03 kg, 0.997 kg of carbon dioxide emissions, so in the case of the national electricity shortages, save electricity, reasonable use electricity is necessary. Save electricity should start from the little things in life, it's also important to the choice of household electrical appliances, realize the national energy saving, as far as possible with energy conservation and environmental protection appliances, with some of the new development of energy conservation and environmental protection appliances to replace old energy-consuming household appliances. Should pay attention to thedetails that should use electric appliance, make the good habit that USES home appliance, save electricity as a kind of duty and responsibility.Save electricitySaving electricity is not only the responsibility and obligation of each of us, but it also saves us a lot of money. We should start saving electricity today and reduce our energy consumption. Electricity is produced by the generator, after raising voltage transformer, through the power line long-distance conveying to electricity, again through the transformer, the voltage drop to suitable for the low voltage electrical equipment, enter homes for people to use. Electricity enters our home to go through five links, did not come easily! And now with the rapid development of economy and the improvement of people's living standard, our electricity consumption has increased greatly in years, resulting in a shortage of electricity. Therefore, I appeal to must economize, reasonable electricity!How much harm can be done by electric tension. Apart from the fact that the power failure will disrupt the daily life order of the people, the subway, the tram will stop, the traffic will be paralyzed, the market will be chaotic and so on, and how much damage will be caused to the national economy! We saved a kilowatt hour by saving one kilowatt-hour of electricity. 35 kilograms of standard coal, a decrease of 1. 7 grams of smoke, 935 grams of carbon dioxide, 6. 6 grams of sulfur dioxide, 3. 7 grams of nitrogen oxides can also protect our ecologicalenvironment without destroying the ozone layer... Besides, it is not difficult to save electricity at one time. 36 hours of air conditioning, or less than 10 hours of TV, or less than 8 kg of water, or 15 hoursless using a fan, or 40 hours less using25 watt bulbs... We can do a lot more, as long as everyone can contribute to saving electricity, we can survive the crisis ofelectricity shortage.Family lighting can be done in the following ways:1. Improve the lighting efficiency of the lighting equipmentRegular cleaning of lighting fixtures:When the lamps and lanterns are not cleaned, the lamp tube and the reflector are gradually accumulating dust, resulting in a reduction in the output efficiency. Therefore, the lamps and lanterns are cleaned regularly at least every three months to maintain the output efficiency of the lamp.Replace old lamps regularly:When the incandescent lamp and the fluorescent lamp tube are used to 80% of its life, the output beam is reduced to 85%, so it should be replaced before the end of life. For a large number of office buildings, the regular replacement of the light source is especially important. Besides, it can save the labor cost and improve the indoor illumination.The ceiling, wall choose light color to be appropriate:Indoor walls, ceilings, curtains are white, ivory... . Light color series, the reflection effect of light is better, can improve the light diffusing effect to save energy.2. Replace low-efficiency light sources and lampsReplace incandescent bulbs with fluorescent lightsIncandescent bulbs consume about three times as much power as fluorescent bulbs.The place where the light time is longer or the switch action is not frequent, such as living room, bedroom... Etc., use incandescent lamp to switch to fluorescent lamp series light source, can achieve the purpose that saves electricity immediately.Alternative daylight fluorescent tube with white color fluorescent tube white fluorescent tubes and color temperature was lower than those of daylight color, high luminous efficiency, however, if the daylight color lamp with white lamp replacement will save electricity about 10%.Replace two 20W lamp tubes with 40W daylight lamp tubeThe total beam output of the 40W fluorescent tube unit is 77.5 Lm/W, while the 20W is only 59 Lm/W, which can save up to 31 percent of the power of the two 20W tubes with 40W.Replace the mercury lamp with a sodium lampMercury lamp is 40, color light source efficiency is 52 Lm/W, and sodium vapor lamps for 60 color, light efficiency is 98 Lm/W, such as the substitution of sodium vapor lamps for mercury lamp, in addition to improve the color, greatly improve theefficiency of, can save electric energy 50% above.With simple beautiful lamps and lanterns replaces luxuriant complex lamps and lanternsToo luxuriant and complex lamps and lanterns not only costly, and maintenance is not easy, also waste electric power, appropriate to construct simple beautiful lamps and lanterns replacement.Replace conventional stabilizers with electronic stabilizersElectronic ballast lamp has many advantages: for example, free starter, immediate start, no flicker, less heat... Etc., compared with traditional stabilizers, it can reduce the consumption of electricity by 20% ~ 30%. Therefore, the high quality lamps of electronic stabilizer should be preferred when choosing lamps and lanterns.Take effective lightingComprehensive lighting and local lighting cooperateTo improve the overall indoor lighting in conjunction with reading, drawing, makeup... The practice of not wasting electricity for a particular activity or work. Therefore for the visual activity that needs high illuminance, use only the reading lamp, desk lamp and so on use as partial illume, provide the necessary illuminance can.Proper illuminationAll kinds of places have their proper illuminance, excessive and inferior are improper, the illumination excessive waste of electricity, the illumination too low is harmful to vision health, affect work efficiency.Use natural light sourcesDaylight useTaiwan has plenty of sunshine, and if it can make use of daylight,it will save a lot of light. At present, the use of daylight in the household and the factory is more common, but the office building with a large lighting power has a significant deficiency in daylight utilization. High frequency adjustable photoelectric stabilizer has superior quality, such as can be combined with automatic light-sensitive control system, it will be helpful for the use of daylight, saving electricity and reducing the cost of electricity. If there is good lighting, the automatic sensing dimming control system can save more than 50% of the electricity bill.Building lighting(1) clear glass is used as window material to obtain sufficient natural light source.(2) use high window design to provide a deep and uniform daylight.(3) the energy saving effect can be achieved by using the lightguide plate and the light guide tube.(4) indoor wall curtain and so on use light color, can improveindoor light diffuses effect, save electric energy(5) keep the window glass clean and improve the lighting effect.5. Use power distribution and control system to save energyReasonable lamps and switch circuit configurationThe lamps and lanterns of unreasonable and circuit configuration, will cause the electric energy waste, such as window area lamps and lanterns and the window area lamps and lanterns into the same switch circuit, if we had enough daylight in the day to close the window when the area lamps and lanterns, will cause the window section intensity of illumination. Therefore, in lighting distribution system design, the following items should be given priority:1. Each independent space should have its own independent switch.2. Open offices should be divided into areas according to the property of space, so that each region can control the lamps independently.3. Large space periphery and core area need independent control.Automatic control of lighting systemThe lighting system adopts the automatic control method, which can eliminate the energy loss caused by human negligence. The control mode is as follows:1. Timing control of specific Spaces and hours of work.2.To use various sensors to measure the light line, human body, or use the door to open, close, to make the light to activate or close.3. Use the daylight automatic sensing system to adjust the output and opening and closing of the light source, and make full use of natural light to achieve the purpose of saving electricity.Also pay attention to saving electricity in detail.1. Household lighting:(1) in order to ensure the effective illumination and brightness, choose the electric light source and luminaires reasonably, and choose the most efficient and energy-saving lamps. Such as 11W energy-saving lamp equivalent to 60W incandescent lamp brightness. The headlights of the headroom shall be equipped with a light - adjusting device when using incandescent lamps.(2) the floor lighting adopts acoustic control power savingdevice. Remember to turn off the light when there is no one in the room. When you watch TV, you only light the electric light you need, saving energy and protecting your eyesight.(3) fluorescent lamps should be used for fine tube lamps and electronic ballasts, which can save about 30% of the electric energy compared with rough tube lamps and inductive ballast.2. Air conditioning:(1) the most suitable air conditioner for the size of the room, the ratio of the room area (square meter) for air conditioning capacity is 1:12.(2) when turning on the air conditioner, make sure the doors and Windows are closed. Clean the dust net regularly, should be cleaned once in half a month, can save 30% of electricity; The setting of air conditioning temperature should be reasonable, suggestion: summercontrol is 26 degrees, winter control is 20 degrees.3. Electric fan:(1) the electric fan USES 5 percent to 10 percent of the power ofthe air conditioner, and the electric fan is a better option when the weather is not too hot or the use time is shorter.(2) it is advisable for the average family to use a fan or floor fan with 230 to 350 mm.(3) pay attention to using the timer device so as to avoid sleepforgetting to close.4. Refrigerator:(1) place the place with the lowest indoor temperature, air circulation and not direct sunlight.(2) the number of doors should be few and the door should be opened quickly.(3) store food in moderation, between food and food, and between the food and the wall of the box, so that the air is free.(4) store hot food, and store it in the refrigerator after coolingto room temperature.(5) timely defrosting the frost, the condenser and the freezershould be kept clean, for the heat dissipation.5. Washing machine:(1) after baptism. Before washing, soak the laundry in a liquid soap or detergent solution for 10 to 14 minutes, and let the detergent work with dirt from the clothes before washing. In this way, the washing machine can be reduced by about half, and the electricity consumption is reduced by half.(2) moderate water use, not too much or too little. Too much waterwill increase the water pressure of the wave plate, aggravate the burden of the motor and increase the power consumption. The amount of water is too little, which can affectthe fluctuation of clothing when washing, increase the washing time, and increase the power consumption.(3) correct the washing time and avoid invalid action. Thecleanliness of clothes, the degree of the dirt of clothes, the variety and concentration of detergent, and the washing time is not in direct proportion. In excess of the prescribed washing time, the cleanlinesswill not improve greatly, and the electricity will be wasted. Adjust the belt of the washing machine. Belt skid, loose, current does not decrease, but laundry effect is poor; Tighten the belt of the washing machine, which can restore the original efficiency without using much power.6. TV:Some TV sets are plugged into a power supply, and they preheat the tube, which consumes about 5 to 10 watts. Therefore, when you don'twatch TV, you need to pull the plug on the power plug to save both electricity and safety.The brightest state of a television image consumes 50 to 80 percent more power than the darkest state, and the higher the volume, thegreater the power consumption. TV color, volume and brightness to the person feel the best state, can save the electricity 50 percent, alsocan extend the life of the television.7. The computer1. When the computer is suspended, if it is expected to be lessthan 1 hour, it is recommended to place the computer in standby. Ifthe time of suspension is greater than 1 hour, it is better to shut down completely.After 2, we use the computer to normal shutdown, should unplug the power plug or close the switch on the power, and gradually form thehabit of this power completely, but don't let it in current condition;3. No need to use the external setting such as printer, speaker, etc.4. Devices such as optical drive, floppy drive, network card andsound card can be screened off first;5. Use CPU cooling software;6. Lower the display brightness. While doing text editing, dim the background while saving energy while protecting your eyesight andreducing the fatigue of your eyes. When a computer plays a single audio file like music, comment, or novel, it can completely turn off the monitor.Some students are keen on overfrequency. As a technical test, it isnot impossible to do so, but if you can meet the performance requirement without exceeding the frequency, you will also try to avoid overfrequency, which is both energy-saving and stable.Other home appliances1. The ironThe electric iron should choose the temperature-tempering type, the iron is heating up fast, meet the use requirement and then automatically power off. When ironing the clothes, the temperature is low in theinitial phase of the power supply. After the temperature is raised, the temperature will be high. After the power is off, the temperature willbe low.2. Electric ovenUse an oven to make food.3. Electric kettleThe scale of electric heat pipe in electric kettle should be removed in time. Prolong the service life, and also save energy.4. Wave furnaceIn processed food, the coating should be added to the processed food, so that the processed food water won't evaporate, taste good, and save energy.The plug socket for household appliances should be in good contact, otherwise it will increase the power consumption and may damage the electrical appliances. The electric heat pipe of the electric kettle should be cleaned in time after scaling, so as to improve the thermal efficiency and save energy. The room with electric heating heater should be sealed as far as possible to prevent heat loss, and the power supply should beturned off in time after meeting the requirement. Ironing is thebest way to choose a thermoelectric iron of 500 watts or 700 watts. Thiselectric iron is heating up quickly and can be automatically cut off when the temperature is used. It can save electricityNowadays, most household appliances have standby functions, and the average household energy consumption in Shanghai is about 20 kilowatt-hours per month, while the home appliance will waste nearly 150,000 kilowatts of electricity. Therefore, try not to put home appliances in standby mode, turn off the power completely when the appliance is not in use, remove the power outlet.At the same time saving electricity should also start with thechoice of household appliances.At present, the various kinds of household appliances that are sold in the market are of great variety and function, and there are many energy-saving techniques for purchasing household appliances.Refrigerator energy saving choice a + +Reporter gome appliance stores located in fuxing road meet a womanis the choose and buy refrigerator soup, she tells a reporter, in order to closer to their children to school, three just moved from pudong to puxi, small home place, so I want to buy a small lisheng refrigerator, so not only save place, more important power saving, energy saving, as well as save a spending at home. Reporters in the electronics store saw thathaier, LG, panasonic, electrolux and other household appliances have launched energy-saving refrigerators.According to gome ice wash Cao Jian home, director of the department, in November last year, China formally introduced the household refrigerator power consumption limit and energy efficiency grade ", will the refrigerator energy efficiency level from high to low is dividedinto A, B, C, D, E5 A grade, grade A said the highest energy level.He said that since the beginning of this year, these new type of energy-saving energy-saving refrigerator is very good to buy, he said, pointing to haier new + refrigerator, the fridge 24 hour power consumption of only 0.35 degrees, relative to the average refrigerator power consumption 0.8 degrees every day, to save more than half of the electricity consumption, is very popular with consumers, sales is very good, every day can buy out six or seven units, the double cease day.Variable frequency air conditioning is becoming more and morepopularAir conditioning is the most energy consumption of home appliancesin the summer, the air conditioning in the summer home appliance market is a tight. At the air conditioning counter of gome electrical appliances, the business is the best, and the salesmen are the busiest. At times, consumers come forward to ask questions about air conditioning performance and price.Wang yong, director of the air conditioning department ofgome's old Simon store, said,Since the summer, the sales of energy-saving and energy-saving air conditioners have been significantly better than last year, so manyconsumers will take this factor into account when they buy air conditioning due to the electricity shortage this summer. Although the price of variable frequency air conditioning in the market is slightly higher now, because of its energy-saving power saving, it has won the favor of many consumers.According to the concerned personage of association of Shanghai JiaoGuDian commercial trade, the compressor of frequency conversion air conditioning used new technology, can effect comparing is greatly increased, relative to the air conditioning that decide frequency in a longer period of time use can save energy about 35%, energy-saving advantages highlighted. Therefore, he recommends that consumers should buy energy saving and power-saving frequency conversion air conditioners when saving electricity for all。
考试范围:xxx;满分:***分;考试时间:100分钟;命题人:xxx 学校:__________ 姓名:__________ 班级:__________ 考号:__________一、选择题1.In my opinion, he doesn’t seem __________ to take this job.A.wisely enough B.enough wiselyC.wise enough D.enough wise2.On sunny days, my grandma often reads a novel ____ the window.A.by B.for C.with D.from3.一How do you practice your spoken English,Andrew?一By English with my classmates.A.to speak B.speaking C.speak4.______is unhealthy for us to go to school without eating breakfast in the morning.A.That B.This C.It5.Remember _________ off the lights when you leave the room,please.A.to turn B.turning C.turn D.turns 6.The ________ you work at your lessons, the ________ your grades will be. A.hard; good B.harder; good C.hard; better D.harder; better 7.The scientists ________ many secrets of the universe.A.found B.invented C.discovered D.looked for 8.The Birdwatching Society goes to Zhalong Nature Reserve the birds every year. A.to count B.counting C.count D.counts 9.May I have some more chicken? It ________ so delicious.A.feels B.smells C.tastes D.sounds 10.That poor man has for three years.A.died B.been diedC.dead D.been dead11.The character Harry Potter ________ by J K Rowling in the 1990s.A.created B.was created C.has created D.will be created 12.Mom won't let Dick go out________ he promises to be back by 10:00 tonight.A.if B.when C.since D.unless 13.We should use our time and energy________, then we can be a man full of_______. A.wisely, wise B.wised, wisdomC.wisely, wisdom D.wise, wisdom14.We have given Mary some advice,but we are not sure ________ she will accept it. A.that B.whether C.which D.what 15.He is __________ a good partner __________ we all like him.A.so; that B.such; that C.so; which D.such; what16.After doing some ____ exercises at the desk for a long time, he did some ___ exercise to relax.A.physics, physics B.physical, physics C.physical, physical D.physics, physical 17.The little boy____hiding in the forest by the police yesterday.A.discovered B.is discovered C.was discovered D.discovers 18.___________ and be honest, Tom, or others won’t trust you.A.Keeping a secret B.Keep a secretC.Keeping secrets D.Keep secret19.From the __________ on his face, I know he did well in ___________ exam. A.express; yesterday B.expressions; today C.expressions;yesterday’s D.expressing;today’s20.——What do you think of Jane? ——She is to be a good teacher.A.patient enough B.too patient C.enough patient D.so patient 21.Mrs. Wang always asks us to ________ conversations in the English classes.A.look up B.turn up C.pick up D.make up 22.——You’d better learn the sentence ________.——Pardon. I don’t understand what you say.—— I mean you should remember every word of the sentence.A.by head B.by heart C.with your hand23.A __________ is a small book used for writing notes in.A.guidebook B.notebook C.textbook24.You can improve your English _________ practicing more.A.by B.with C.of D.in 25.Learning is lifelong journey because every day brings something new.A.\ B.a C.the26.For those who had the chance to _________the 70th celebration of the founding of the People's Republic of China, it would be a lifelong memory.A.take off B.take part in C.take care of【参考答案】一、选择题1.C2.A3.B4.C5.A6.D7.C8.A9.C10.D11.B12.D13.C14.B15.B16.D17.C18.B19.C20.A21.D22.B23.B24.A25.B26.B【参考解析】一、选择题1.C解析:C【详解】句意为:依我看,他从事这项工作似乎不够明智。
第一部分阅读材料 Part One Reading MaterialsM1U1 物质科学 Physical Science能量在本单元,我们将学习关于能源,正如我们所知,人类需要能源生存,如何获得的能量将成为中央点。
In this unit, we will learn about energy, As we know that humans need energy to survive, how the energy can be obtained will become the central points.学习目标: Learning Objectives:1.作为能量的一个来源来理解太阳Understand the sun as a source of energy.2.了解能量从温暖的物质转移到凉爽的。
Understand how energy is transferred from warm substances to cooler ones.3.了解如何使用不同的发电能源。
Understand how electricity is generated using different sources of energy.4.了解日常机制(如火车和船)是动力的能源。
Understand how everyday mechanisms like trains and boats are powered by energy.科学百科全书 Science Encyclopedia1.能源可以分为两类:可再生和不可再生能源。
Energy can be divided into two categories: renewable and non-renewable energy.2.可再生能源的来源是地热,风能,水能,生物质能,太阳能。
Renewable energy sources are geothermal,wind,hydropower,biomass,and solar.3.大多数可再生能源用于发电。
Most renewable energy sources are used to produce electricity.4.不可再生能源是铀矿(核能)和化石燃料(煤、石油/石油和天然气)Non-renewable energy sources are uranium ore( nuclear energy) and fossil fuels(coal, petroleum/oil, and natural gas)物质科学 Physical Science1.环境与能源之间的关系是紧密相连的。
The relationship between the environment and energy is closely connected.2.每一种能源的使用都会对地球产生影响,无论是排放气体的产生,影响环境的建设和能源植物的建设和生态系统的影响。
The use of each source of energy has an impact on Earth whether it is the creation of emission.gases that affect the environment or the construction of energy plants and the effects on ecosystems.太阳能 Solar energyWarm up 热身你有没有想过什么能量使植物生长? Have you wondered what energy makes a plant grow?你读的时候要思考的大问题. Big question to think about while you read.太阳能如何在我们的日常生活中使用?How can solar energy be used in our daily life? content Vocabulary 内容词汇1. solar energy (the energy that comes from the sun)太阳的能量 (来自太阳的能量)2. renewable adj. (of energy and natural resources) that is replaced naturallyor controlled carefully and can therefore be used without the risk of finishing it all.可再生的.这是自然的或是可以控制的,因此可以使用,而不需将它完成的风险就可以使用了. 3.Styrofoam (a soft light plastic material that prevents heat or cold from passing through it,used especially to make containers) 聚苯乙烯泡沫塑料一种能防止热或冷的柔软的塑料材料,特别是用来制造容器的课文:Within the human body, there are many changes and processes that take place. Blood circulates through our veins and arteries. The nervous system sends and receives signals from one part of the body to another. Our glands secrete hormones. These systems all require energy.Where do we get this energy? We get our energy from the food we eat. All of the above need what our body needs to function a source of energy.在人体内,有很多的变化和过程,发生。
血液循环通过我们的血管和动脉。
神经系统发送和接收来自身体的一部分的信号到另一个部分的信号。
我们的腺体分泌荷尔蒙。
这些系统都需要能量,我们从哪里得到这个能量?我们从食物中得到的能量。
所有上述需要我们身体需要的能量来源。
Human beings have learned to use different sources of energy from ourplanet.Energy sources are divided into two categories; renewable and non-renewable.人类已经学会了使用来自地球不同的能源。
能源主要分为两类;可再生和不可再生。
Solar energy is produced by the sun. The sun is the most valuable source of energy on Earth. It permits life to exist. Plants need the sun to produce their food. Plants are the essential food producer in Earth's food chain. Anyliving thing that forms part of the food chain benefits from solar energy directly or indirectly.太阳的能量是由太阳产生的。
太阳是地球上最有价值的能源。
它允许生命存在。
植物需要阳光来生产他们的食物。
植物是地球食物链中必不可少的食品生产国。
直接或间接形成食物链利益的任何生物。
Solar energy is a renewable source of energy.Every forty minutes,Earth receives an amount of energy from the sun that is equal to what the whole population on Earth uses in one year.However, the sun is not widely used as a source of energy to run machines太阳能是一种可再生的能源,每四十分钟,地球从太阳中接收一个能量等于地球上所有人口的一年,然而,太阳并没有被广泛用作机器运行的能源 .Some people use solar energy to heat their houses, to warn their water, and even to cook.These houses have solar panels that collect and store heat from the sun and convert it to energy.Scientists are developing new and better ways to capture solar energy and store it.This way more people can utilize it when and where it is needed.有些人用太阳能加热房子,提醒他们的水,甚至做饭,这些房子有太阳能电池板,收集和储存热量,并将它转化为能源,科学家正在开发新的更好的方法来捕捉太阳能并储存它。
热如何转移? How is heat transferred?The sun gives us heat. Heat is the name for the energy that is transferred. or moved, from warm substances to cooler ones. For example, heat is transferred to your body from the sun's rays, and that heat is absorbed by your body. There are also other ways to obtain heat. A light bulb or a candle flame gives off heat. Heat is also transferred to your body when you rub one hand against another.太阳给我们热量。