首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
In every day usage "hot" means "having a lot of heat". Many people think that "cold" is something completely separated from heat
In every day usage "hot" means "having a lot of heat". Many people think that "cold" is something completely separated from heat
admin
2010-01-12
57
问题
In every day usage "hot" means "having a lot of heat". Many people think that "cold" is something completely separated from heat. But this is not true. "Cold" simply means "having very little heat."
Your life depends on heat. In fact, every living thing depends on it. (28) Without heat, every living thing would be frozen to death. All living things get their heat from the sun, which provides the conditions in which life is possible.
Since the dawn of history, man has been able to make his own heat. He has been able to release the sun’s heat that is trapped in things such as wood, coal and oil. And he has been able to use this heat.
Heat has made civilization possible. With heat, man could melt metals. As man learned to use metals and fuels, industries grew. As a result, engines were invented. These are machines that change heat energy into mechanical energy. Engine can do the work of many men. Without engines industrial civilization is impossible.
Yet when the first engines were built in the 17th century, men were still wondering about the nature of heat. "What is it?" they asked. Not until the early years of 19th century did they find the right answer.
The sentence "your life depends on heat" means
选项
A、in the cold season human beings will die
B、one usually builds his life on fire
C、the more heat one has, the better
D、it is impossible for man to live without heat
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/7LJO777K
0
成人本科学位英语
相关试题推荐
Fewpeopledoubtthefundamentalimportanceofmothersinchild-rearing,butwhatdofathersdo?Muchofwhattheycontributeis
Youaretowriteinnolessthan120wordsaboutthetitle"CommercialismatHolidayTime".Youshouldbaseyourcompositionon
______scientistsdevelopnewwaysoffeedingthehumanrace,thecrowdedconditionsonearthwillmakeitnecessaryforustol
Man:Jimmyisgoingonajourneytomorrow.Shallwehaveafarewelldinnertonight?Woman:Doyouthinkit’snecessary?Youknow
In1965,theUnitedStatesmadeimportantchangesinitsimmigrationlaws,allowingmanymoreimmigrantstocomeandentirelyel
Foranyexport-orientedAmericanbusiness,aninvitationtojointheU.S.CommerceSecretaryononeofhistrademissionsabroa
Artificialflowersareusedforscientificaswellasfordecorativepurposes.Theyaremadefrom【C1】______ofmaterials,suchas
Artificialflowersareusedforscientificaswellasfordecorativepurposes.Theyaremadefrom【C1】______ofmaterials,suchas
Withunemploymentrisingandhousingcostsstillhigh,citiesaroundthecountryareexperiencinganewandsuddenwaveofhomel
随机试题
沉默的谈判对手的心理特征是()
尿崩症侏儒症
男,25岁。发热伴皮肤出血点2周,查体:双下肢皮肤可见出血点,胸骨下段压痛(+),肝肋下3cm,脾肋下1.5cm。血液检查:Hb105g/L,WBC2.0×109/L,分类可见幼稚细胞,PLT35×109/L。最可能的诊断是()
A、溶菌酶含片B、西地碘含片C、硝酸银溶液D、氯己定含漱剂E、地塞米松粘贴片能够卤化细菌的体蛋白,杀菌力强的是()。
当机械波在媒质中传播,一媒质质元的最大形变量发生在()。
我国车辆购置税的适用区域在“中华人民共和国境内”,这里的“中华人民共和国境内”是指()。
下列不属于经济周期中复苏和繁荣阶段可能出现的一般特征的是()。
下列关于房地产权属登记的概念,说法不正确的是()。
在Word中,如果要在“插入”和“改写”状态之间切换,可以按()键。
Becausestereotypesarestandardizedand______ideasofgroups,basedonsomeprejudices,theyarenotderived______objectivefac
最新回复
(
0
)