这来之不易的生活我们怎么不能珍惜呢改成带句号的句子

标准答案C

这个就根据你们的要求了　如果严格的话也许不能换字　但是一般的话同音调的还是可以的　因为有可能会碰到一些成语少的字作结尾　如果再宽松的话同音不同音调的都可以接

半丝半缕,恒念物力维艰

十一届三中全会；把工作重心转移到经济建设上来

Essay on Water
Introduction
Water is an essential ingredient for the existence of life as we know it.Biochemical processes occur in aqueous environments,many of which use water.Water also plays a significant role in the process of photosynthesis ( 6 CO2 + 6H2O + 672kcal -> C6H12O6 + 6O2 ).Photosynthesis is the most basic and significant chemical reaction on earth,providing the primary nutrients,directly or indirectly,for all living organisms and is the primary source of atmospheric oxygen.Without water and its unique and unusual properties,life as we know it on earth would not exist.Water is the only substance naturally present on the earth that exists in three distinct states -solid,liquid,and gas.Many of the unique properties in the take for granted include the three physical phases,transparency,universal solvents,density behavior and temperature,high specific heat,high heat of vaporization,viscosity,surface tension and low compressibility.To understand why these properties exist in water and why they are essential to life on earth it is important to look at the shape and bonding patterns of the molecule because the uniqueness of water is a direct result of its shape and bonding patterns.
Water鈥檚 Important Role
Water is the single most abundant molecule in living things.It provides the medium in which most biochemical interactions occur.Some biochemical reactions water is involved in are:cellular respiration,digestion,and photosynthesis.Water is the home for many animals,plants and micro-organisms.Water is involved in the cycling of all other material by living things both on a local and global scale.
Water has a number of unique and unusual properties that are responsible for its important roles it plays in the biosphere.
BOILING AND MELTING POINTS.Water has unusually high boiling and freezing points compared to other compounds with similar molecular structure.A comparison of boiling and freezing points can be seen in the following chart.Notice only water has a boiling and melting point that exists within the range of life.The boiling point of water is a unique 100oC results is and the freezing point is a remarkable 0oC due to the fact of the polar nature of the water molecule and hydrogen bonding.
Two important,but not unique,properties of water for life are that water is liquid at normal temperatures over much of the earth and that water is transparent.If water were not liquid,nutrients could not flow from soil to the roots of plants,blood could not circulate,and bodies of organisms would be so rigid that they could not move.If water were not transparent,light could not penetrate through cellular protoplasm into chloroplasts to drive photosynthesis in plants,you would be blind because light could not penetrate through the vitreous humor to the retina of your eyes,and light could not penetrate into lakes to allow growth of phytoplankton.Clearly life cannot exist without the amazing properties of water.
SOLVENT CAPABILITY.A solvent is a substance capable of dissolving another substance (solute) to form a homogeneous mixture (solution) at a molecular level.The polar nature of water makes it an excellent solvent especially with other polar compounds such as salts,alcohols,carboxylic compounds and many more.As a solvent water is unsurpassed in it鈥檚 ability to dissolve a wide range of inorganic and organic substances.More substances dissolve in water than any other known substance.The versitility of water as a solvent allows it to serve as the medium of transport for so many materials.This is true both for individual organism and for the biosphere as a whole.The essential transport systems including blood,lymph,and urine are all water based.Without water鈥檚 solvent capabilities to make three systems work,life could not exist.
A LESS DENSE SOLID FORM.Water exists in liquid form over a wide range of temperatures outside of which life processess are slowed down or halted completely.Between 4̊c and the freezing point at 0̊c,an amazing thing happens that occurs with very few substances,Water gradually expands becoming less dense.Water is the only substance where the liquid state is heavier than the solid state.All other substances the solid form is denser than the liquid form.Since the density of ice is less than that of liquid Walter,ice floats on water.It is very significant that ice expands and floats on water because if lakes and streams froze from the bottom to the top,aquatic life would not even exist,and climate and weather patterns would be altered drastically.This is an important quality of water because as ice forms it floats on top of the water.It acts to provide a thermal blanket for the rest of the water beneath and all its many life forms.This is important because if water behaved like all other substances,water bodies would freeze from the bottom up and in most cases would never thaw completely during summer.This would have a dramatic cooling effect globally and would impact all life on earth.
LARGE HEAT CAPACITY.The remarkable property of water is it鈥檚 extremely high capacity to absorb heat without a significant increase in temperature.We see examples of this all the time.For example,under the summer sun at the beach,sand will increase in temperature to the point where it is too hot to walk on,whereas the water temperature is still cool,even though both are heated by the same amount of solar heat energy.Water has the largest heat capacity of any common substance.This means that water takes more heat energy to raise the temperature of water a given number of degrees than for any other material.In cooling water gives up more heat than any other material.This property is important globally and individually.Individually,the high heat capacity buffers organisms from sudden extreme shifts in temperature which would be harmful to it.Globally,the oceans moderate seasonal temperature fluctuations.That is why coastal areas are cooler than inland areas at the same latitude.These differences influence the weather globally.And without weather changes life would be very unbearable.The absorption of huge amounts of solar heat energy by water during the day and the slow release of heat energy during the night is responsible for the moderate climate in the coastal areas.A wider range of temperatures typically exist inland away from bodies of water.If not for the vast oceans on earth tempering the climate life would not exist.This property combines with the MPIBP property to create the water cycle which supports life on earth.
HIGH HEAT OF VAPORIZATION.Water has an extraordinarily high heat of vaporization.On average it takes 580 calories to convert one gram of water into water vapour.A value that is higher than any other common substance.This property is of important significance to animals in regulating body temperature because of the large amount of body heat that is required to evaporate water (sweat).Without this property of water,organisms would overheat and die and the climate would be thrown into chaos.
Conclusion
All of these unusual properties stem from the unusual structure and bonding patterns of the water molecule.The molecule is strongly polar because of its uneven distribution of electrons.This allows water to interact easily with other polar substances which accounts for the great solvent power of water.The electronegativity difference between the oxygen and hydrogen atoms in water molecules is responsible for the establishing of hydrogen bonds between molecules.It is the mutual attraction of water molecules that accounts for the ability of water to remain liquid over a broad range of temperature (0oC-100oC) and also for its high heat of vaporization and high heat capacity.Water could not have all these special characteristics/properties without its unique shape and bonding patterns,life could not exist if not for these special properties of water,espacally the hydrogen bond.
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"多少个日日夜夜的辛勤努力"貌似没主语,你看后面的排比句,都是“难关被攻克”,“人员工作”,你把“多少个日日夜夜的辛勤努力”简化了看看“?努力”,所以就这句有语病

胜：名胜古迹 引人入胜 （美景）
易：来之不易 轻而易举 （容易）
色：眉飞色舞 和颜悦色 （脸色）
赤：面红耳赤 近朱者赤 （红）

小题1:谁知盘中餐，粒粒皆辛苦；做“光盘”一族，成“节约”达人；拒绝“餐桌剩宴”，回归“文明饮食”。（符合宣传标语特点，围绕饮食节俭即可，2分）
小题2:（1）“尊敬的家长”应顶格写。（2）把“请务必准时到达”改为“敬请光临”。（“敬请指导”“请您光临”等亦可）（2分，每处1分）
小题3:经济实惠,就显真情；按需点菜,亦显热情；光盘浄碗,尽显文明（2分）


小题1:

吃每一碗粥、每一碗饭时,应该想想这粥饭里有多少人的付出,多少能源的消耗,真的是来之不易；我们生活所需的每半根丝、每半缕线,都要常常想想其中包含几多物质能源和几多人的心血,应该好好珍惜,不能浪费.

第2个.今天老师讲的知识我全掌握了。

半丝半缕恒念物力维艰

节俭.
“一粥一饭,当思来处不易；半丝半缕,恒念物力维艰.”
出自明·朱柏庐《治家格言》,说的是一碗粥饭,当想来之不易；半根丝线,常记织得艰难.意指衣食来之不易,不能浪费.
提倡的当然是节俭不浪费了.

这是自信的来源
如果发现自己出现自大的情况了,那就回班里看看这题有多少人会做,有多少种方法可以做.
如果只是自我感觉开心那就还接着快乐下去,那是你的动力来源

As we all know, water is very important to us. We can't live without water. We need to drink water everyday and the food we eat needs water too.We should face that water is badly polluted. We need to pay attention that water is wasted seriously. So, what we should do now is saving water and protecting the water.

一粥一饭当思来之不易,半丝半缕恒念物力维艰
明朝 朱柏庐《治家格言》 也就是朱子家训里头有,
最初是谁就不知道咯,现在引用这句话的人一般也就
说这是“古训”、“谚语”了.

1.选择合适的词语填空.爱护爱惜珍惜（1）我们要（爱惜）粮食,（ 爱护 ）公共财物.（2）我们要（珍惜）这来之不易的幸福生活.激烈剧烈强烈（3）（ 激烈 ）的战斗开始了.（4）轮船遇到了（强烈）的风暴,船身（ 剧烈 ）的摇晃起来.辽阔宽阔壮阔（5）波澜（ 壮阔 ）的大海,令人豪情万丈.（6）在（ 辽阔 ）的草原上,我见到了牛马成群的动人景象.（7）汽车在（ 宽阔 ）的高速公路上飞驰.2.写出下列词语的近义词.抱怨（ 埋怨）镇定（沉着）讥笑（ 嘲笑 ）舒适（安逸 ）持续（ 连续）判断（ 判别）盘算（ 打算 ）平稳（ 安稳 ）咨询（ 征询 ）计策（计谋﹚ 灵敏﹙机灵﹚困难（ 艰难）允许（许可）疑视（ 注视 ）启示（启迪）向来（ 从来 ）3.写出下列词语的反义词.谴责（ 称赞 ）镇定（ 慌忙 ）轻快（ 沉重 ）伟大（渺小）简单（复杂）凶猛（ 温和 ）缓和（紧张）残缺（完整）稀疏（ 密集 ）深奥（浅显）果断（ 犹豫 ）热情（冷漠）普通（ 特殊 ）丧失（ 得到 ）慷慨（ 吝啬 ）舒展（ 蜷缩 ）4.找出近义词或反义词,用线连起来.5.填上意思相近或相反的词语,组成成语.眼（ 疾）手（ 快）（ 如）饥（似 ）渴（斩 ）草（除 ）根胡（ 作）非（为 ）（朝 ）思（ 暮）想凶（神 ）恶（煞 ）弄（巧 ）成（拙 ）杨（长 ）避（短 ）翻（ 天）覆（ 地）化（险 ）为（ 夷）大（公 ）无（私 ）善（始 ）善（终 ）口（是 ）心（非 ）半（ 半）半（喜 ）喜（新 ）厌（旧 ）（龙 ）争（ 虎）斗（前 ）因（后 ）果（ 左）顾（ 右）盼6.请在括号里填上十二生肖名.狐假（虎 ）威亡（ 羊）补牢对（牛 ）弹琴手株待（兔﹚千军万（马 ）画（ 龙）点睛（ 狗）急跳墙杀鸡吓（猴 ）（ 鼠）目寸光闻（鸡 ）起舞虎头（蛇 ）尾（猪）八戒照镜子7.把下面的词语补充完整.目（瞪 ）口呆废（ 寝）忘食赴汤（蹈 ）火含辛（茹 ）苦曲高和（复）脍（ 炙）人口纷至（沓 ）来不（拘 ）一格（触 ）类旁通（ 标）新立异鱼（贯 ）而入美不（胜 ）收8.根据意思写成语.（1）用来形容眼前美好事物太多,或景物变化太快,眼睛来不及观看.（ 应接不暇）（2）用来表示恭敬,竭尽全力.（鞠躬尽瘁）（3）紧迫而不能等待.用来形容性情急切（ 迫不及待）（4）用来指人们安定地生活,愉快地从事其职业.（安居乐业）（5）用一杯水去救一车着了火的柴草.用来比喻力量太小,解决不了问题.（杯水车薪）（6）超出人们的意料之外.（出乎意料）（7）用来形容说话写文章简明扼要.（ 言简意赅）（8）用来比喻积少成多.（ 集腋成裘）9.成语接龙.一（ ）（ ）人----人（ ）人（ ）----（海 ）（ 阔）天空----空（前 ）绝（ 后）吉（ ）（ ）意----意（ ）（ ）发----发（ ）（ ）思----思（绪 ）万千浑身是胆----（）----（）----（）----落荒而逃

B

B

我们今天的幸福就是昨天爸爸妈妈用辛勤的汗水赚来的来之不易的幸福

一粥一饭,当思来之不易；半丝半缕,恒念物力维艰.（——清代朱柏庐《朱柏庐治家格言》,世称《朱子家训》）
意思是说：吃每一碗粥、每一碗饭时,应该想想这粥饭里有多少人的付出,多少能源的消耗,真的是来之不易；我们生活所需的每半根丝、每半缕线,都要常常想想其中含几多物质能源和几多人的心血,应该好好珍惜.
这句话告诫人们养成勤俭节约的美德要从日常生活、穿衣吃饭做起,不要铺张浪费.切莫把日常微小的事物看轻了,从而不知珍惜.要知道每一样东西的背后有多少人的辛勤付出,有多少能源的消耗；桩桩件件来之不易
体现了中华民族勤俭节约的美德

我酷爱打篮球,如果没有特殊情况,那么,一到大课间活动时间,你准会在篮球场上找到我,这一次我们班篮球队在全校球赛中夺冠,那胜利来之不易,它是全班同学共同努力的结果,当然,其中也凝聚着我的心血.

A

1、读书破万卷，下笔如有神。
（熟能生巧）
2、谁知盘中餐，粒粒皆辛苦。
（来之不易）
3、春蚕到死丝方尽，蜡炬成灰泪始干。
（鞠躬尽瘁）
4、山穷水复疑无路，柳暗花明又一村。
（豁然开朗）
5、王师北定中原日，家祭无忘告乃翁。
（死不瞑目）

B

D

这胜利的果实来之不易,我们要好好珍惜它.
爸爸工作总是兢兢业业,一丝不苟.

D

一粥一饭，当思来之不易，体现了要节约，故选D。

1, we all know that his hard-won first prize.
2, Lang Lang in just 17 years old when he was a good opportunity.
3, to be grateful for our parents.
4, his father was always very strict with him.
5, he often performed at the event.

I will treasure this valuable friendship forever!

成功的花,人们只惊羡它现时的明艳,然而,当初它的芽浸透了奋斗的泪泉,洒满了牺牲的血雨--冰心
屈原小时侯不顾长辈的反对,不论刮风下雨,天寒地冻,躲到山洞里偷读《诗经》.经过整整三年,他熟读了《诗经》305篇,从这些民歌民谣中吸收了丰富的营养,终于成为一位伟大诗人.

“黑暗中点燃希望”
我认为这个题目最好!符合课文内容.

千辛万苦 千难万险 来之不易 敝帚自珍

Everything I do, because I cherish this be not easily won.
望采纳

一个字：难
两个字：艰辛、艰难、困难

悯农
锄禾日当午
汗滴禾下土
谁知盘中餐
粒粒皆辛苦

冰寒于水、杯水车薪、水到渠成、如鱼得水、水到鱼行、青山绿水、流年似水、跋山涉水、巴山蜀水、尺山寸水、杯水之敬、尺水丈波、水滴石穿、滴水之恩
饮水思源、积水成渊
流水无情、覆水难收、反水不收

x0d就爱迪生那句“天才来自百分之一的灵感加上百分之九十九的汗水”吧,他的成功确实也来之不易呀

地道表达：
Our parents' money doesn't grow on trees.

The lotluck from thousands' miles comes not so easy,I will cherish it.

晴天霹雳
qíng tiān pī lì 解 释 晴天打响雷.比喻突然发生意外的令人震惊的事件.出 处 宋·杨万里《诚斋集·卷二十一·人日出游湖上》诗:“平地跳雪山,晴空下霹雳.” 用 法 主谓式;作主语、宾语、定语;含贬义 指令人震惊
对牛弹琴
duì niú tán qín 解 释 讥笑听话的人不懂对方说得是什么.比喻对蠢人谈论高深的道理,白费口舌.用以讥笑说话的人不看对象.
非亲非故
"故"是“旧的”、“老的”的意思,在这引申为“朋友”的意思 ,旧的人,也就是过去就认识的人,即朋友.
日暮途穷
( rì mù tú qióng ) 解 释 日暮：天快黑；穷是尽、尽头；途穷：路走到了尽头.天已晚了,路已走到了尽头.比喻到了末日或衰亡的境地.也比喻到了无路可走的地步.
来之不易
lái zhī bù yì 释 义 来之：使之来.得到它不容易.表示财物的取得或事物的成功是不容易的.
出 处 明·朱柏庐《治家格言》：“一粥一饭,当思来处不易；半丝半缕,恒念物力维艰.”

传粉、受精 给你个网址http://wenku.baidu.com/view/9702332aed630b1c59eeb5f5.html

一个人的一生不应该碌碌无为,要有自己的理想有自己的追求,生命的价值在于创造和风险,恪尽职守去做好自己的本职工作,来实现自己的人生价值,成为社会的有用之才~

we don't wanna waste these hard-won materials,which took us a lot of time and energy with many processes.

Please cherish the hard-won love

妈妈对自己的孩子非常的慈爱.很关心她的孩子.这一句 “因为我们都非常珍惜那来之不易的味道” 就可以体现出 母爱

生命来之不易,我们应该怎样对待生命?
①正确认识人与自然的关系.树立人与自然相互依存、和谐相处的生态道德观,养成保护自然环境的思想意识和行为习惯.
②珍爱自己的生命,对自己的身心健康负责.当生理和心理出现病患时,要顽强战胜它,决不屈服,决不放弃.在困难和挫折中,磨砺生命的意志,展现生命的光辉.
③善待其他生命,不能侵犯和危害他人生命和健康,对亲人、朋友、动物、植物,都应以珍爱之心去对待,去呵护.
珍惜爱护生命,我们应该怎么做?
①人类必须尊重自然规律,善待大自然,爱护环境,保护动植物,与大自然共生共存、和谐相处.
②当自己生命受到威胁时,我们不轻言放弃；当自己生命遭遇困难,我们要勇敢面对；当他人遭遇危险和困难时,应受可能帮助.

铭记历史

“赏析”二字比较确切,其实你问意思,看字面就能明白.网上的信息也多如牛毛.难就难在赏析上.故此为阁下高明之处.

1.明代人写出这样的白话文,我深感惊讶,比曾国藩家的家书还要早.足见朱伯芦同志对家人的敦敦教诲,刻骨铭心而又语重心长.
2.古代你要压点韵合个拍什么的那都是常事,也都是古人八股文作业的定式.这“一粥一饭”“半丝半缕”压得最好,合得最妙.
3.“来之不易”特指过去很不容易,“物力维艰”可理解为现在境况很难.这一个对仗,比出了作者些许愁思,些许哀怨.不知道阁下有没有“赏析”到.故子孙后代更要崇尚节约,操持家业.封建思想非常浓重.
4.其实最主要的还是他具有超强的现实主义意义.现在国家那啥,不是提倡廉洁奉公,节约资源吗,这句话给他们最贴切.你看如何呢?哈哈.