托福听力考试背景知识综合辅导(三十八)
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Jupiter 木星是太阳系九大行星中最大的一个，它的体积可以容纳1300多个地球。它的质量是地球质量的300多倍。把太阳系所有其他行...
托福听力考试背景知识综合辅导(三十九)
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JUPITER Jupiter has thick, gaseous atmospheres and low densities. It has no solid rock surface. The temperature ranges ...
托福听力考试背景知识综合辅导(四十)
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MUSICAL TERMINOLOGY PITCH is the perceived highness or lowness of a sound. Variations in frequency are what we hear as ...
托福听力考试背景知识综合辅导(四十一)
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TIMBRE is the tonal quality or color of a sound. This quality is determined by the wave shape, which is determined in tu...
托福听力考试背景知识综合辅导(四十二)
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MEMBRANOPHONES Membranophones produce sound by stretching a membrane over an opening. Most, but not all, membranophones...
托福听力考试背景知识综合辅导(四十四)
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火山 世界上60％以上的活火山都分佈在太平洋沿岸新形成不久的巨大山脈和島嶼；另外有集中在地中海、非洲東部和大西洋中部的地殼...
托福听力考试背景知识综合辅导(四十三)
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无线电波（即赫兹波） 赫兹波除微波波段兼用厘米表示它的波长外，一般均用频率代替波长，其单位为赫（Hz）。频率范围约在30千赫（...
托福听力考试背景知识综合辅导(四十五)
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季风 现代人们对季风的认识有了进步，至少有三点是公认的，即：（1）季风是大范围地区的盛行风向随季节改变的现象，这里强调“大...
托福听力词汇替换秘辑完整版（十五）
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dark ---- lack of lightday in and day out ---- all the timedecrease ---- slightly shorterdelicious ---- ...
托福听力词汇替换秘辑完整版（十七）
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factors ... lead to ---- causesfail to ---- don'tfall back on ---- turn tofall back on one's dictionary ----...
托福听力词汇替换秘辑完整版（十六）
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each week ---- weeklyearly ---- soonerearly ---- before the endeasier ... than ... ---- difficult // har...
托福听力词汇替换秘辑完整版（十八）
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Germany and France ---- Europeget ---- furnish // receiveget a good night sleep ---- be well restedget a lif...
托福听力词汇替换秘辑完整版（十九）
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had been expecting more than just a passing grade ---- was harder than he had anticipatedhadn't gotten rid of ----&g...
托福听力词汇替换秘辑完整版（二十）
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I can't believe how good ---- be more attractive than I expectedI can't leave a project unfinished. ---- I must ...
托福听力考试背景知识综合辅导(四十六)
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Big eyed Bug Rearing Natural HistoryBig-eyed bugs are true bugs in the order Hemiptera. The two most common species are...
托福听力考试背景知识综合辅导(四十七)
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Giant Shield Volcanoes The giant shield volcanoes on Mars are truly huge. The largest are three times as high as the bi...
托福听力考试背景知识综合辅导(四十八)
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Insomnia self-care techniquesin addition to the wise use of supplements and maintaining a healthy lifestyle, there are a...
托福听力考试背景知识综合辅导(五十)
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Sunflowercommon name for annual and perennial herbs of a genus of the family of composite flowers. The genus, which cont...
托福听力考试背景知识综合辅导(四十九)
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Olympus Mons a gigantic (about 600 km/375 mi in diameter) shield volcano on Mars, is larger across than the length of th...
托福听力词汇替换秘辑完整版（二十一）
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jar ---- containerjazz record // songs ---- listen to musicjob ---- workjoin us ---- with usjudge ----&g...
托福听力词汇替换秘辑完整版（二十二）
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magnate // millionaire ---- wealthy developermail ---- writemail carrier ---- delivermain tool ---- stro...
托福听力词汇替换秘辑完整版（二十三）
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naturally // spontaneously // not planned in advance ---- individual self expressionnay ---- does notnearly fini...
托福听力词汇替换秘辑完整版（二十四）
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occasionally ---- sometimesoccupy one's time ---- wait a long timeodd ---- surpriseOf course not (mind). ---...
托福听力词汇替换秘辑完整版（二十五）
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painter ---- artpainting ---- picturepaper ---- form // newspaper // assignmentpark ranger ---- park ser...
托福听力词汇替换秘辑完整版（二十六）
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question ---- informationquick // What's the rush. ---- There is no need to be in a hurryquickly ---- fastqu...
托福听力词汇替换秘辑完整版（二十七）
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save wear and tear ---- protect // not require very much maintenancesay ---- speak tosay ---- agreesb. be aw...
托福听力词汇替换秘辑完整版（二十八）
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so ---- bothso happy ---- receive a good evaluationso it can go around it ---- to find its wayso many // ext...
托福听力考试背景知识综合辅导(五十一)
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Surface Tension condition existing at the free surface of a liquid, resembling the properties of an elastic skin under t...
托福听力考试背景知识综合辅导(五十二)
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SEA The distribution of marine organisms depends on the chemical and physical properties of seawater (temperature, sali...
托福听力考试背景知识综合辅导(五十三)
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CICADA Their life cycle takes 17 years in northern species (the so-called 17-year locusts) and 13 years in southern spec...
托福听力考试背景知识综合辅导(五十四)
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BEAR’S HIBERNATION In cold climates bears sleep through most of the winter in individual dens made in caves or holes in...
托福听力词汇替换秘辑完整版（二十九）
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take ---- delivertake a break every once in a while // study so long // can hardly concentrate ---- stop studyin...
托福听力词汇替换秘辑完整版（三十）
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under the impression ---- get the impressionunder warranty ---- be brokenunderstand ---- be sure // thinkund...
托福听力考试背景知识综合辅导(五十五)
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SNOWFLAKE Snowflakes form symmetrical (hexagonal) crystals, sometimes matted together if they descend through air warme...
托福听力考试背景知识综合辅导(五十六)
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ROCK Igneous rock originates from the cooling and solidification of molten matter from the earth’s interior. Sedimenta...
托福听力考试背景知识综合辅导(五十七)
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OZONE / DNA the sun damages the DNA of the exposed skin cells. In response, the cells release enzymes that excise the da...
托福听力考试背景知识综合辅导(五十八)
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ENERGY An early source of energy, or prime mover, used by humans was animal power, i.e., the energy obtained from domes...
