难道是风的缘故?我小心翼翼地挑了十片叶子,我跑到楼梯上,那里可没有风,可以更好地做实验。有的叶子我捏着叶柄喊“一二三”往空中一撒,有的捏着树叶尖抛下,还有的像玩陀螺一样用双手搓着旋儿转出手掌……一片二片三片,当十片树叶跳着优美的舞蹈缓缓落地后,我迫不及待地跑下楼,那些树叶像是约好了一样,十片树叶只有两片面朝天。这叫我百思不得其解。我带着疑惑去“问”百科全书,终于找到了答案:因为叶面是用于光合作用的,有较多的叶绿细胞,重量大的\'一面自然就朝下了。
“哦!原来如此!”我恍然大悟。我又找来了一枚一元硬币和一角硬币,掂量了一下,让它们同时从同一个楼梯落下,试了好几个不同的楼梯,每回都是一元硬币先落下。看来,不同重量的东西落地的时间也不一样。我欣喜若狂地把自己的发现炫耀给妈妈听。妈妈不仅激动地搂着我,夸我了不起,而且放了一段“伽利略比萨斜塔落体实验”网上视频给我看。
没想到原来落叶里还有这么大的学问,这可真是一“叶”知真理啊!
Dear teacher,
We\'ll have a class meeting this afternoon. All of us students hope that you can attend it. Please accept our sincere invitation.
In the class meeting, we will make some plans about all the subjects, including English. We do have some puzzles and we need your help. So we hope you can set some time aside to be with us in the class meeting. We will feel honored if you can come to attend our class meeting.
Looking forward to your coming.
Yours
XXX
Dear Gack
How are you? I am Mike,I am 14 yaars old and my birthday in November ,I can speak Chinese and a little Franch .I am from China. I want to be a doctor , I think it will help many people and it is very cool in a white unifrom ,I live in lin tong.
how about you?can you wrte to me soon?
Yours,
Li Hua
My dear English teacher:
From my English, I will contact a deeply like English. English let me open view, let me understand the culture of different region amorous feelings to.
I want to use English freely and talk to people, but my spoken English is very bad.Language is a kind of habit, I find it hard to correct his poor pronunciation, this makes me very distressed, but I have worked very hard in the improved.
I feel that learning English is the key to read more look more, I like reading comprehension, it not only let me get some knowledge, but also let me realize the happiness of learning English, I feel very proud can read English article.
Thank you for teaching me. I believe in your teachings, I can certainly through their efforts to learn English well.
Best wishes for you!
Yours,nidemingzi
Yours
XXX
设计题目(6)英文字母显示1
基本要求:
1.能用数码管自动一次显示出字母L、P、H、F、E、D、C、B、B、C、D、E、F、H、P、L;然后再从头循环,电路上电从L开始显示。
Hello, we are XX tourism company, we have you and your 2 children 4 to set up tourist routes for you to choose.
From Beijing to Shanghai\'s tourist routes, you can go play in Shanghai Zoo, which has its own characteristics is a large-scale integrated Zoo. Then you can also go to Shanghai, Nanjing Pedestrian Street shopping, it is a shopper\'s paradise.
From Beijing to Changsha tourist routes, you can go play Changsha Window of the World, which is a new development in an amusement park. Then you can go take a look at Pinghu Tang and Wangfujing, one of the very many. Yuelu Mountain is you have to go to a place, from the top you can see the whole Changsha.
From Beijing to Guangzhou\'s tourist routes, you can go a long long amusement park to play, and that there are many excellent recreational facilities, so that you will not regret it. You can also go to Hong Kong the world\'s wildlife, which is currently China\'s largest imitation of the Wild Animal Park. Guangzhou\'s food is delicious, you will like.
From Beijing to Guilin tourism line, you can go to the famous Lijiang River, sitting on the boat to enjoy the beautiful scenery, and then can go to Yinzi Yan, it was China\'s first large cavern 4. Guilin Yang Shuo in the line of Yang Renjie shopping and you will be a good place to eat. That you will not feel the same with Chinese characteristics.
I hope you are happy to play China
Yours
XXX
Such is sons’ nature; I really do not know how to express my thanks to you. However, I can imagine, on the day 18 years ago, when you gave birth to me, what a complex feeling you had. In the past few years, every day you struggle me up in the morning and prepare breakfast for me, then in the afternoon, you always welcome your only son with delicious foods after a day‘s hard work. Now your son has been 18 and will go to university soon, like a bird is leaving its parents. Nevertheless, your footprints on my heart will never ever fade and I love you mum!
your son
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