一到晚上7点网速就很卡本人联通4M宽带。本人电脑配置。
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2956421 共回答了18个问题
|采纳率88.9%- 在正常不过了,晚上7点上网高峰期影响还是蛮大的。给你两个国外安全DNS,看看效果吧
open 208.67.222.222备用 208.67.220.220 诺顿DNS: 198.153.192.40
备用DNS: 198.153.194.40
DNS安装方法百度一下很简单。 - 1年前
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请看以下几个可怕的教训:2004年,在福建省某镇一个山场.因有一个农民在菜地里烧杂草不小心引发森林火灾,受害森林面积达28公顷,火灾延续19小时,扑火直接费用2.6万元!造成8人死亡!2006年,某国有林场因村民因抽烟引发森林火灾.森林草地受害面积1000多亩,4名扑救人员死亡!
森林火灾发生的原因有人为因素和自然因素两种,其中,人为因素占了主要比重.人为因素主要有野外用火开荒;野外用火取暖;野外用火驱兽;野外抽烟乱丢烟头等.水火无情,可不是闹着玩的,有句古训说得好:玩火者必自焚!人们一个不经意的举动,就可以给森林带来灭顶之灾,给人类自己带来不尽的伤痛!是人们薄弱的防火意识导致了一次次惨痛的后果!
作小学生的我们能做些什么呢?我想应该先从我们自己做起,严格遵守小学生守则,不在野外玩火.并要做好小小森林防火宣传员的工作,走进各自的村庄,和保护森林的叔叔阿姨们一道,宣传防火的重要性,告诉人们森林防火重在预防.帮助提高人们的防火意识.在此我要向各位叔叔阿姨呼吁:森林防火人人有责!森林防火贵在预防!
我们知道森林是绿色金子,一片森林就是一座绿色的宝库,森林为我们提供木材,调节气候,涵养水源,抗洪防涝,防风固沙,防止水土流失.森林制造氧气,使空气清新,被称为“地球之肺”.可以说我们生产生活一时一刻也离不开森林.可是,一颗小小的火种可能会酿成一场森林火灾,损失惨重.一场大火也可能会使地球上的一个或几个动植物种群从此消失.为扑灭森林火灾
为了防止森林火灾,我们小学生应该做到:不玩火,安全用电,火把节甩火把、春节燃放烟花鞭炮远离易燃物.清明节扫墓期间,风干物燥,容易发生火灾.扫墓时我们应告诫父母,不烧纸钱,不烧香.见到上坟的人要烧纸钱、烧香时,我们要去劝阻.告诉他们:对祖先的祭奠,压上几张纸钱,插上几炷不点燃的清香,献上一束鲜花,那何尝不是对祖先的最好怀念?好好保护这些与祖先相伴的树木吧1年前查看全部
- 晚上7点,月亮出现在西边的天空,像峨眉,这天是初三、初四还是二十七、二十八?我感觉都对啊
逐云社1年前2
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8601609 共回答了18个问题
|采纳率94.4%当然是农历上半月的初三初四,凡是前半夜看见的月亮都是农历上半月的,而下半月我们要看月亮要么是天亮前看,或者等到太阳升起之后看日月同辉.1年前查看全部
- 这是一个英语问题.今天晚上晚上7点以前就要答案,是关于改句子和写出所有形式的问题.
这是一个英语问题.今天晚上晚上7点以前就要答案,是关于改句子和写出所有形式的问题.
一.将下列单数句子改成复数句子.
1.There is one peach in my hand.
2.She has a camera and an umbrella.
3.He is a drive.
4That is her watch.
5.Do you have a new radio?
6This a pencil.
二.根据上下文,写出正确的名词所有格形式.
1._________(Miss Red)house is near the shop.
2._________(Tom and Tim)bedroom is very big.
3.Lucy_______(Lily) friend.
4.The_______(girls)books are all on zhe dsk.
5Where are my_______(father)shose?yushufei1年前1
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少年包打听 共回答了20个问题
|采纳率85%一.将下列单数句子改成复数句子.
1.There is one peach in my hand.
【There are some peaches in our hands.】
2.She has a camera and an umbrella.
【They have some cameras and some umbrellas.】
3.He is a drive.
【They are drivers.】
4That is her watch.
【Those are their watches.】
5.Do you have a new radio?
【Do you have new radios?】
6This a pencil.
【These are pencils.】
二.根据上下文,写出正确的名词所有格形式.
1.Miss Red's(Miss Red)house is near the shop.
2.Tom and Tim's(Tom and Tim)bedroom is very big.
3.Lucy is Lily's(Lily) friend.
4.The girls'(girls)books are all on zhe dsk.
5Where are my_father's(father)shose?
学习进步~若觉得满意~请记得采纳~∩_∩1年前查看全部
- 小红在晚上7点与8点之间解一道题,开始钟表上的时针与分钟在一条直线上,解完题时,时针与分针正好重合,小红解这道题共用了多
小红在晚上7点与8点之间解一道题,开始钟表上的时针与分钟在一条直线上,解完题时,时针与分针正好重合,小红解这道题共用了多少时间?
最好用算式方法,最后答案是32又11分之8松间醉倒1年前1
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我灌水 共回答了19个问题
|采纳率94.7%开始钟表上的时针与分钟在一条直线上
设开始时是7点x分
(x/60)×5+35=x+30
x=60/11分
时针与分针正好重合
设结束时是7点y分
12(y-35)=y
y=420/11分
y-x=420/11-60/11=360/11
即32分43.8秒1年前查看全部
- 某人晚上7点多外出手表上分针时针的夹角为110度,晚上8点前回家两针角度仞为110度,问此人外出多长时间
yyy19721年前1
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傲冷雨 共回答了21个问题
|采纳率81%七点多出门,假定是 7 点 m 分
时针位置:210 + m/2
分针位置:6m
210 + m/2 - 6m = 110
m = 200/11
不到八点回家,假定是 7 前 n 分
时针位置:210 + n/2
分针位置:6n
6n - (210 + n/2) = 110
n = 640/11
外出时间:n - m = 440 / 11 = 40 [分钟]1年前查看全部
- 以后每天晚上7点上班英语怎么说?
影子backboy1年前3
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孤岛时光 共回答了25个问题
|采纳率88%自己说:From now on,I will start work at seven p.m.every day.
对别人说:From now on,you have to start work at seven p.m.every day.
work 这里是名词1年前查看全部
- 为什么下完雨后应该黑天但是天却呈现出橘黄色还很亮注意:(现在是晚上7点多,应该是黑天)
ggfu19771年前1
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lupin 共回答了22个问题
|采纳率90.9%那可不是说下完雨后天就应该黑天,夏至刚过,白天每天都在变短.所以此时7点多不黑天是正常的.而后就是天空呈现橘黄色且很亮,这都是地球周围的大气层对阳光进行散射而形成的.光在传播过程中,遇到两种均匀媒质的分界面时,会产生反射和折射现象.但当光在不均匀媒质中传播时,情况就不同了.由于一部分光线不能直线前进,就会向四面八方散射开来,形成光的散射现象.地球周围由空气形成的大气层,就是这样一种不均匀媒质.因此,我们看到的天空的颜色,实际上是经大气层散射的光线的颜色.1年前查看全部
- 昨晚直到晚上7点,我妈妈才下班回家 翻译
gjh2go1年前1
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lxlmlxlm 共回答了25个问题
|采纳率88%My mother didn't come back home from work until seven o'clock yesterday evening.
不明白的再问哟,请及时采纳,多谢!1年前查看全部
- 中译英:过去两年内她都是在晚上6点吃晚饭.但从今年一月开始,她把晚餐改为晚上7点.
ecl3adadf6a841年前5
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娃哈哈n110 共回答了23个问题
|采纳率87%玛丽告诉我,过去两年内她都是在晚上6点吃晚饭.但从今年一月开始,她把晚餐改为晚上7点.
Mary tells me that for the past 2 years she's always had dinners at six,but since January she's changed the dinner hour to 7.
晚上6点
和
晚上7点
不用翻为 6 pm ,7 pm
习惯是 只说 6 和 7,大家知道 dinner 是晚上吃的.
这是地道的,
我是加拿大人,英语母语.1年前查看全部
- 英语作文现在是晚上7点根据cathy提供的信息,
woshini561年前1
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shanshan119 共回答了20个问题
|采纳率90%It's seven o'clock in the evening.Cahty is doing her homework.Her father is reading a book.Her
mother is watching TV.Her grandfather is listening to the radio and her grandmother is cleaning the
room .Her sister Betty is playing computer games.
How happy they are!1年前查看全部
- 甲从A地出发去B地办事情,下午1点出发,晚上7点准时到达,如果他想下午2点出发,晚上7点准时到达,每小时就必须多行2千米
甲从A地出发去B地办事情,下午1点出发,晚上7点准时到达,如果他想下午2点出发,晚上7点准时到达,每小时就必须多行2千米,求A、B两地之间的距离.
艾老爷1年前1
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呼啦啦圈 共回答了20个问题
|采纳率90%解题思路:如果他想下午2点出发,晚上7点准时到达,则路上用了7-2=5小时,每小时就必须多行2千米,5小时比原来多行2×5=10千米,而原来需要7-1=6小时,所以这10千米就是原来6-5=1小时所行的距离,则AB相距10×6=60千米.7时-2时=5时,
7时-1时=6时,
6时-5时=1时
(7-2)×2×6
=5×2×6
=60(千米)
答:两地相距60千米.点评:
本题考点: 追及问题.
考点点评: 明确5小时多行的10千米即是原来1小时所行的距离是完成此题的关键.1年前查看全部
- 小明下午6点多外出时,看手表上面两指针的夹角为110度,晚上7点前回家时发现两指针夹角仍是110度,你能求出他外出多长时
小明下午6点多外出时,看手表上面两指针的夹角为110度,晚上7点前回家时发现两指针夹角仍是110度,你能求出他外出多长时间吗?
weilai5g1年前1
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无翼孤鹰 共回答了1个问题
|采纳率100%40分钟1年前查看全部
- 你什么时候吃晚饭?我在晚上7点吃晚饭.夏天很好,但是秋天是我最爱的季节.英文怎么写?
你什么时候吃晚饭?我在晚上7点吃晚饭.夏天很好,但是秋天是我最爱的季节.英文怎么写?
你什么时候吃晚饭?我在晚上7点吃晚饭.夏天很好,但是秋天是我最爱的季节.
英文怎么写?文心47131年前1
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爱吃菜泡饭 共回答了20个问题
|采纳率100%When do you have dinner?I have dinner on 7:00 p.m..Summer is pretty good,but autumn is my favourate season.1年前查看全部
- 各位大虾,这是一个英语问题.今天晚上晚上7点以前就要答案,是英语选择(名词和冠词)的问题.
各位大虾,这是一个英语问题.今天晚上晚上7点以前就要答案,是英语选择(名词和冠词)的问题.
1.She has five______. 选项:A.stickers B.pen C.hat
2.They have a big___. 选项:A.living rooms B.reading room c.bathroom
3.I bought a box of_____yesterday. 选项:A.pear B.apple C.apples
4.It's a slice of________. 选项:A.pizza B.pizzas C.pizzaes
5.Give me two_______of potatoes. 选项:A.bags B.bag Cbox
6.I have three_______. 选项:A.comic book B.comicsbook C.comic book
6b6od1年前1
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popo12345 共回答了16个问题
|采纳率93.8%1.A. five 后面要加单数名词的复数形式.
2.B 前面有a 表示是后面要接单数名词 而C如果是bathingroom的话,也可以.
3.C a box of 后面就可数名词的复数形式.
4.A a slice of 后面只能加名词的单数形式,类似的有a piece of .
5.A two和第一题的five一样.
6.应该有一个选项是comic books吧? 解析 同上.1年前查看全部
- 2011每一天冬季猎户座在天空中的位置有什么变化?为什么?例如晚上7点.8点.9点钟 举6个例子
竹生1年前1
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hu572088 共回答了14个问题
|采纳率100%去下个星图软件就都有了.如果不要太复杂的Starmap2就行.至于为什么就是因为地球自转,和太阳的升落是一个道理.1年前查看全部
- 在晚上7点英语作文提示爷爷听收音机,爸爸在看书,妈妈奶奶在看电视,哥哥在睡觉,我和姐姐在写作业
happy12041年前1
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鱼鱼也想飞 共回答了21个问题
|采纳率90.5%t's 8:30 P.M.now.I am doing my homework.My brother and my father are playing chess.My mother is watching TV.My grandma is listening to music,and my grandpa is talking with my uncle.The dog is sleeping on the floor.All of us are very busy.1年前查看全部
- 英语翻译1.Mary晚上7点做作业.Mary< > < >at 7 pm < > < > < >2.Tony通常是什么时
英语翻译
1.Mary晚上7点做作业.
Mary< > < >at 7 pm < > < > < >
2.Tony通常是什么时候上学?
< > < > < >Tony< > < > < > < >
3.他通常是早上六点十五去上学.
He< > < > < > < >at< > < >
4.学科,科目< > 科学< > 因为< > 描述< > 字词< >ryosun1年前1
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激水飘石 共回答了12个问题
|采纳率83.3%1.does homework, in the evening.
2. What time does Tony usually go to school
3.usually goes to school six fifteen.
4. subject , science , because , describe , word1年前查看全部
- 某人晚上6点后外出时手表上时针与分针的夹角是110度,晚上7点前回家时表上时针与分针的夹角仍为110度,求此人外出了多少
某人晚上6点后外出时手表上时针与分针的夹角是110度,晚上7点前回家时表上时针与分针的夹角仍为110度,求此人外出了多少分钟?
zjchong1年前1
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betty12012304 共回答了12个问题
|采纳率100%设出发时的时间是6点x 分.回来的时间是6点y分.
(6+x/60)*30-6x=110
6y-(6+y/60)*30=110
两式相加得,5.5(y-x)=220
y-x=40
所以此人出门的时间是40分钟1年前查看全部
- 某地从晚上7点到明早6点,每小时气温下降1度,下降记为负.预计明晨6点时的气温比今晚7点的气温下降了__________
某地从晚上7点到明早6点,每小时气温下降1度,下降记为负.预计明晨6点时的气温比今晚7点的气温下降了____________度,用式子表示为______________.
式子是一个算式啊dyyjb86_zs75_2b1年前3
-
之zhi 共回答了14个问题
|采纳率100%某地从晚上7点到明早6点,每小时气温下降1度,下降记为负.预计明晨6点时的气温比今晚7点的气温下降了(11)度,用式子表示为(24-19+6).[晚上7点=19点]1年前查看全部
- 但是也很难!我给200分1+1到底等于几?如果不等于2那等于几?晚上7点来验收
宁馨1年前0
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共回答了个问题
|采纳率
- 请高手帮忙修改几句中译英1. 我通常每天晚上7点在我们的宿舍听法语广播. (广播broadcast 宿舍dormitor
请高手帮忙修改几句中译英
1. 我通常每天晚上7点在我们的宿舍听法语广播.
(广播broadcast 宿舍dormitory)
2. 老师的办公室在教学楼的二层.
3. 她的杂志在宿舍靠窗子的桌子上.
4. 波音777在1994年7月12日首次飞上天空.
(飞上天take to the sky)
5. 一个要饭的(beggar)走过来,他身材矮小(little)、面黄肌瘦(yellow)、衣衫褴褛(ragged)、瘸腿(lame)、满面胡须(unshaven).
6. 从南方来的工人们去年在我们村里盖了一所新学校.
7. 昨天,在戏院(theatre)里,我后面的一男一女总是大声说话.
1.We usually listen to Franch broadcast in our dormitory every evening at 7:00.
2.There is teacher's office on the second floor.
3.There is her magazine on the desk by the window in a dormitory.
4.On 1994.7.12,Boeing 777 first took to the sky.
5.A beggar come here,he is thin、yellow、ragged、lame、and unshaven.
6.Works from south builded a new school in our village in the last year.
7.Yesterday,a man and a woman behind me always said loudly in the theatre.
小弟不才,刚开始自学语法,希望得到各位的指教.
在此拜过!
花圈绣土1年前1
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行素不分 共回答了19个问题
|采纳率89.5%1 Franch 拼写错误 应为 French 法语的意思2 teacher's office 前少一个不定冠词 a3 这里用There is 有点多余,直接说 Her magazine is on...the window of the dormitory. 宿舍这里有特指,应用the.4 OK5 A beggar wa...1年前查看全部
- 假如你叫李明,现在是晚上7点,你的家人都在家.请你根据表格内容写一篇文章介绍你的家人正在做的事情.要求条理清楚,语句通顺
假如你叫李明,现在是晚上7点,你的家人都在家.请你根据表格内容写一篇文章介绍你的家人正在做的事情.要求条理清楚,语句通顺,书写规范,60词左右.
Family Members/What:father and mother/play chess;grandmother/watch TV;mother/listen to music;sister/talk on the phone;brother/read a newspaper;I/do homework默然之苏紫1年前3
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ben1980ben 共回答了14个问题
|采纳率100%It's 7pm now.All my family members are staying at home.Look!My father and mother are playing chess.My grandmother is watching TV on the sofa .My mother is listening to music.My sister is talking on the phone.What about my brother?Oh,he is reading a newspaper.What am I doing?Guess!Ha-Ha,I'm doing my homework.How busy and happy we are!1年前查看全部
- 王明晚上7点与8点之间开始做作业,当时钟面上的时针与分针恰好成一直线.当他完成作业时,时针与分针重合
王明晚上7点与8点之间开始做作业,当时钟面上的时针与分针恰好成一直线.当他完成作业时,时针与分针重合
王明花了几分钟做作业?kentrue1年前4
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qingxian6271 共回答了18个问题
|采纳率94.4%分针每分钟走6度,时针每分钟走0.5度.
7点与8点之间,时针与分针成一条直线时,分针落后时针180度,到重合时,则分针要比时针多走180度.
所以,小明做作业的时间为:180÷(6-0.5)=360/11(分钟)=32又8/11(分钟).1年前查看全部
- 鬃狮蜥蜴不吃东西如题 买回来的鬃狮蜥蜴幼体 这两天不怎么吃东西 UVA每天早上8点到晚上7点 中午开2个小时的UVB 饲
鬃狮蜥蜴不吃东西
如题 买回来的鬃狮蜥蜴幼体 这两天不怎么吃东西 UVA每天早上8点到晚上7点 中午开2个小时的UVB 饲养箱内白天温度有35 夜间26 也有水盆 为什么它这几天不吃东西 还一直跑来跑去 要不就是趴在树枝上头转来转去的看
感光GA1年前1
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xiangwei1980 共回答了20个问题
|采纳率85%很正常 ,一般刚买回来的是不会怎麼吃东西 ,
你的是不是活食 不是的话 ,给点活食试试看~1年前查看全部
- 小明晚上6点多写作业发现钟上的写完作业是钟的时针和分针的夹角是120°这时已近晚上7点小明做作业用几小时
Metal8881年前6
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我在这里潜水 共回答了17个问题
|采纳率88.2%十一分之480分1年前查看全部
- 面包房出售的面包在晚上六点以后打八折,我晚上7点买一只面包付了2.8元,这支面包原价多少?
zj61200001年前1
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子天大人 共回答了15个问题
|采纳率93.3%2.8/0.7=4元1年前查看全部
- 写一篇英语作文,条件是现在是晚上7点,你在做作业,爸爸在看电视,妈妈在打扫卫生,爷爷在听音乐,奶奶和姑姑在谈话.写一篇不
写一篇英语作文,
条件是现在是晚上7点,你在做作业,爸爸在看电视,妈妈在打扫卫生,爷爷在听音乐,奶奶和姑姑在谈话.写一篇不少于40词的短文mn1501年前1
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wjshu 共回答了15个问题
|采纳率86.7%It is 7:OOp.m.I am doing my homework.My father is wacthing television.My mom is doing housework.My grandfather is listening to the music.Grandmather is talking with my aunt.What a busy time!1年前查看全部
- 从晚上7点多多时针与分针重合,到晚上9点多时针与分针成直线,共有多长时间
bullitt1年前1
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ly200624 共回答了14个问题
|采纳率92.9%1小时38分左右1年前查看全部
- 暑假里一件难忘的事有件事 令我终生难忘。那是在去青岛的时候,是星期五的车,那天晚上7点出发了,我上了车,很高兴,到了晚上
暑假里一件难忘的事
有件事 令我终生难忘。那是在去青岛的时候,是星期五的车,那天晚上7点出发了,我上了车,很高兴,到了晚上10点,我还上兴高采烈的,一下到早上7点,到达了目的地------青岛,先到了青岛的商场和超市,商场里人山人海,倒是人在买衣服。而超市里也是人山人海,许多人在品尝购物,但是我和父母什么都没有买就出来了。下一站就是海底世界,而且青岛的大街小巷都有这么一句话,没看过海底世界,就别说来过青岛。我们到海底世界后,里面有生物标本,还有活生生的水族动物,那里都是生物标本,下面来到了水族馆,那全是活生生的水族动物,有鲸鱼,蝙蝠鱼,千年龟,......最后来到了梦幻水母宫,那里的水母颜色各异,有红的,蓝的,黄的,......我们玩了一下午 要去日照的一个小旅馆休息了,我们在一个小旅馆里吃饭睡觉,第二天上午继续休息,到了下午,来到海边,我急匆匆的往深水区跑去 忽然一个大浪来了,我后面有个小男孩他立刻拉着我的手,往回跑,刚上岸,大浪来了 要不然 我就没命了。这令我很难忘。aiqinghaimao1年前4
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xwhi 共回答了18个问题
|采纳率88.9%那天中午,家里只有我和爷爷俩人,奶奶去菜市场买菜了,爸爸和妈妈都去上班了,现在家里就好象一个大南瓜里面没有了南瓜籽一样,空荡荡的.我和爷爷因为感觉闷得慌,就准备一起收拾屋子.我发现了厨房冰箱里鸡蛋快没有了,就跑下楼去超市买鸡蛋.
超市里的东西虽然是应有尽有,但是价格太昂贵了.我拿过袋子,小心翼翼地装鸡蛋,心里祈祷着:千万不能有任何的差错呀.可是事与愿违,正当我在拿最后一个鸡蛋时,可能是由于心里如释重负,一放松,手一滑,手中的鸡蛋就如一块巨大的石头一般重重地砸在了另外一个鸡蛋上面,破天慌的,一块大石头无缘无故地砸在你的头上面,你还不得委屈死了?鸡蛋委屈,可是我也一样委屈,自认倒霉,我得赔钱呀.
于是,我就跑过去,去问售货员阿姨一个鸡蛋大概几元钱,她说:"一个鸡蛋大概五角钱吧."我松了一口气,幸好我付了鸡蛋原来的钱还多剩下五角钱,真是不幸中的万幸呀,如果一个鸡蛋是一元钱的话,那我就是双悲临门哪.我告诉了给我结帐的那位阿姨,她也没有责怪我,只是让我赔了五角钱.回到家,爷爷问我怎么这么晚才回来,我告诉了爷爷那件事情,他说:"你呀真是太老实了,换成别人哪,没准还会贼人喊贼呢."我在想:如果我当时没有赔那五角钱,可能现在我还在耿耿于怀,没准还会惭愧呢.
现在我又想到:何必呢,五角钱就能够换来一个"清白身"和一个"自由身"不是挺值的嘛,何必那么吝啬呢.老老实实地踏踏实实地过日子不是更舒坦的吗?最起码我是这么认为的.这件事使我明白了许多道理,令我难忘.1年前查看全部
- 王华晚上7点与8点之间开始做作业,当时钟面上时针与分针恰好成一条直线.当他完成作业时,发现时针与分针恰好重合.王华花了多
王华晚上7点与8点之间开始做作业,当时钟面上时针与分针恰好成一条直线.当他完成作业时,发现时针与分针恰好重合.王华花了多少分钟做作业.
maozhaozi1年前4
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59663 共回答了20个问题
|采纳率85%分针每分钟转动360÷60=6度
时针每分钟转动360÷(12×60)=0.5度
7点整的时候,分针落后时针:
7/12×360=210度
两针成直线的时候,分针落后时针180度
用时:(210-180)÷(6-0.5)=60/11分钟
两针重合的时候,分针正好追上时针,
用时:210÷(6-0.5)=420/11分钟
写作业用了:420/11-60/11=360/11分钟1年前查看全部
大家在问
- 1用分式 a=-3分之5时,求(1-a)^2-4(1-a^2)+4(1+a)^2
- 2It __________ me two days to write the article.(took)
- 3(甲)已知圆C的方程是x2+(y-1)2=5,直线l的方程是mx-y+1-m=0
- 4水的几种状态,急 速度!水有固态气态液态,当它们互相转变的时候叫什么?比如说,水由气态变为液态,叫液化;水由固态变为液态
- 5纠正一句翻译“你之前是发到什么youjian地址的?What is the email address you sent
- 6根据意思填写Peter get up and brush your teeth _______(one) There i
- 7将长方形纸片ABCD沿AE向上折叠,使点B落在DC边上的F点处.若△AFD的周长为9,△ECF的周长为3,则PC=几
- 8X×二分之一方=五分之四,十分之九X+三分之一=五分之四 这是两道方程题
- 9若向量 a =(cosα,sinα), b =(cosβ,sinβ),则下列说法不正确的是 [ &
- 10在10张奖券中,有两张中奖,现有10个人先后随机地从中各抽一张,那么第7个人中奖的概率是 A. B. C. D.
- 111*3+2*5+3+9+4*11+5*13+6*15+7*17+8*19+9*21+10*23
- 12我需要被冻住(含义是心冰冷了) 用英语怎么说
- 13峨眉山月半轮秋,影入平羌江水流.夜发清溪向三峡,思君不见下渝州.一一找出四个地名
- 14一根钢管的横截面是是环形,内圆半径是5cm,外圆直径是8cm,钢管的横截面积是多少
- 15分数加减混合运算题负二分之一减二 等于负二分之五请问他的计算过程是怎么算的?负六分之一乘二乘负三等于一请问他的计算过程是