首页
登录
职称英语
In every day usage "hot" means "having a lot of heat". Many people think that
In every day usage "hot" means "having a lot of heat". Many people think that
游客
2025-03-15
35
管理
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. [br] From the sentence "he has been able to release the sun’s heat that is trapped in things such as wood, coal and oil" we know______.
选项
A、man can get heat from things like wood, coal and oil
B、man cannot get the heat directly from the sun
C、only wood, coal and oil have heat
D、all the sun’s heat is trapped in things
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3998664.html
相关试题推荐
Havingtakenourseats,A、theprofessorbeganthelectureB、thelecturebeganin
Peopleallovertheworldtodayarebeginningtohearandlearnmoreandmore
Peopleallovertheworldtodayarebeginningtohearandlearnmoreandmore
Peopleallovertheworldtodayarebeginningtohearandlearnmoreandmore
Aftermanyyears’waiting,Chinesepeople______realizedtheirdreamtoholdthe
Sensiblepeopledon’tthinkitis______tobuythingswhicharenotneededevena
Manypeoplehavedifficultyinstudyingmathematics.Sometimestheirdiffi
Manypeoplehavedifficultyinstudyingmathematics.Sometimestheirdiffi
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowing
Toooftenyoungpeoplegetthemselvesemployedquitebyaccident,notknowing
随机试题
Whenmostpeoplethinkaboutchangingtheirbodyshape,theyusuallyfocuson
Inrecentyears,railroadshavebeencombiningwitheachother,mergingint
Inhislifetime,heenjoyedareputation______.A、asgreatas,ifnotgreaterth
TheEuropeanCommissionslasheditseconomicoutlookfortheeurozoneyester
公共场所
甲未经录音录像制作者许可,复制发行其制作的录音录像的,其承担责任的方式可能为(
2011年上半年,我国软件产业实现软件业务收入8065亿元,同比增长29.3%,
根据材料,以下说法正确的有( )条。 ①2020年上半年,新疆风电装
建设工程项目投标报价分析包括()。A、项目特征和需求分析B、工料机消耗量分析
提升新从业人员的安全技术素质,是遏制煤矿、非煤矿山、危险化学品、烟花爆竹等高风险
最新回复
(
0
)