The Tallest Trees in the World

Hello, we are redwood trees（红杉树）. We come from America. We are very toll, more than＊ 100 meters tall. We are the tallest trees in the world. Why do we grow＊ so toll？ Because we live a very long time. We can live more than 2 000 years! We live by the sea. The weather there is not 1oo cold or too hot.＊ There is a lot of rain and fog＊ by the sea. We can grow well in rain and fog. In autumn, our leaves will turn red and look very beautiful. Would you like to be our friend？     

Space Case

The vacuum of space is a hostile, forbidding place: people must re- main in high-tech cocoons if they are to travel or work above the lowest few thousand feet of the earth’s atmosphere. And living beings aren’t the only things at risk . The very molecul…     

天空和海

Oh,the sky and the sea are beautiful tonight.The sky and the sea are blue and very bright!痧There are stars in the sky. There iS an island in the sea. There is a moon in the sky and it is shining over me. Oh,the sky and the sea are beautiful tonight. The sky and the sea are blue and very bright!函Tonight the moonlight is shining on the waves in the sea- Oh,no! A wave is rising and falling over me! Oh,the sky and the sea are beautiful tonight. The sky and the sea are blue and very bright!奋…     

Parameter identification of internal wave and mesoscale eddy

1. Introduction The ocean is an acoustic wave-guide limited above by the sea surface and below by the seafloor. In the acoustic viewpoints, the sea is extremely variable. The sea current, internal wave, mesoscale eddy, etc. all disturb the sound propagation. The mesoscale eddy is frequently seen in places close to the strong peak front current. The peak front eddies are often of ring type. The ring becomes a large bend when getting out of the main current. The diameter of the ring may reach …     

英美精美哲理散文赏析

Keeping pleasant "He is a fool who can not be angry,but he is really a wise man who will not." The habit of keeping pleasant is indeed better than an income of a thousand dollars a year.The life without cheerfulness is like the severe winter without the sun. We all love cheerful company,but we are apt to forget that cheerfulness is a habit which can be cultivated by all. We find it very difficult to be gay when we are in distress .It requires great courage. We should never forget that to     

阅读理解

阅读下面的短文,然后做每篇短文后面的题目 The sea looks very beautiful when the sun is shin-ing on it. It can be very terrible when there is a strongwind. The sea is very big. It covers three quarters of theearth. The sea is also very deep in some places. There isone place,the sea is about 11 kilometres deep there. The     

AHAPPY SUMMER

Last summer, my family and I went to Qingdao. Qingdao is a beautiful city. It is in the east of China. The sun was bright, the sky was blue, the sea was big and the water was dean. We swam in the sea and saw a lot of fish. Weate some seafood （海鲜）.The seafood was yummy. I loved the seafood very much. We took many photos, and l bought some nice gifts （礼物） for my friends. I had a good time in Qingdao.     

鲨鱼

The shark may be the most feared of all marine creatures. It is not the biggest or the fastest in the sea,but it is most dangerous because it attacks a man suddenly.There are more than two hundred and fifty types of sharks in the world.Most of them are     

格温妮丝·帕特洛:拥抱未来

The last time I met her was at the end of 2011,when she was still living with Chris Martin 注1 and their two children in north London.The impression I had was that they were at ease with each other.Today,she seems somehow more at home than before,and very relaxed.She is wearing soft,1)faded jeans and a white T-shirt;her feet are 2)bare,and she looks like the most natural 3)version of herself.     

Study on Learning Motivation of Higher Vocational Colleges Students in Tianjin

Learning motivation occupies an important position in non-intelligence factors,as it plays a pivotal role in university students’ successful completion of their studies and strengthening of professional knowledge base.However,the present university students generally lack motivation in higher education.This research used questionnaire method,which is a questionnaire random sample in 500 students of learning motivation from four comprehensive higher vocational colleges of Tianjin,and explores the status quo of learning motivation in higher vocational students of Tianjin.The result shows:The learning motivation level of higher vocational colleges students is above middle level;Male on the learning motivation total level is significantly higher than female;Rural students in the learning motivation on the aggregate level is significantly higher than that of urban students;Look from the different grades,sophomore students have lowest level of learning motivation;Freshmen learning motivation is at highest level.     

青藏铁路(英文)

The new Qinghai-Ti-bet railway began trial oper-ation(操作)on July1.The1,956-kilometer-longQinghai-Tibet railway is theworld’s highest and longestplateau(高原)railroad andalso the first railway to con-nect the Tibet AutonomousRegion(西藏自治区)withother parts of China.Some960kilometers ofits track are located(位于)4,000meters above sea lev-el and the highest point is5,072meters,at least200meters higher than the Pe-ruvian(秘鲁的)railway inthe Andes(安第斯山脉),which was formerly theworld’s highest altituderailway.With the tria...     

Integration of axiomatic design and theory of inventive problem solving for conceptual design

Axiomatic design （AD） and theory of inventive problem solving （TRIZ） are widely used in conceptual design. Both of them have limitations, however. We presented an integrated model of these two methods to increase the efficiency and quality of the problem solving process for conceptual design. AD is used for systematically defining and structuring a problem into a hierarchy. Sometimes, the design matrix is coupled in AD which indicates the functional requirements are coupled. TRIZ separation principles can be used to separate non-independent design parameters, which provide innovative solutions at each hierarchical level. We applied the integrated model to the heating and drying equipment of bitumen reproduction device. The result verifies that the integrated model can work very well in conceptual design.     

Don＇t Touch!

Hello, we are cactuses＊. We come from the desert, but now you can see us all over the world＊. We are not afraid of cold and dry. Look, there are spines all over our bodies. So don＇t touch us! The spines can help us stop the water from evaporating.＊ We can grow very tall, more than＊ 10 meters. And our Howers are very beautiful. They are white, yellow or pink. Do you want to make friends with us？     

保护大熊猫

Pandas are a remarkable species. They can only be found in the bamboo forests of western China at heights of about 3,000 metres above sea level. They live a slow, peaceful life,     

珊瑚岛(英文)

In the sea there are many islands. In its warm water there are some little ones. We call them "coral islands".In the sea there are m any islands. In its warm water there are som e little ones.W e call them “coral islands”. A coral island is very nice to…     

On the Role of DiMaggio in The Old Man and the Sea

The Old Man and the Sea is one of the masterpieces of Hemingway,which describes the old fisherman Santiago is always collected in the presence of danger and maintains a high level of dignity in the struggle with nature. DiMaggio does not really appear in the novel,but the role he plays in the novel is very important. This article discusses the subtle and indispensable role he plays based on the dialogues between the child and Santiago and his inner activities when fighting with the marlin and the shark at the sea.     

Investigation of migration of pollutant at the base of Suzhou Qizishan landfill without a liner system

We investigated migration of pollutant at the base of the Suzhou landfill after it had been operated for 13 years. The investigation was carried out by performing chemical analyses on the soil samples taken from the silty clay deposit. Concentrations of chloride, chemical oxygen demand （COD） and the heavy metals in the soil samples were determined using the standard methods. The experimental data showed that the maximum migration depth of chloride was more than 10 m, while the maximum migration depth of COD varied between 1 and 3.5 m. It is believed that the difference is attributed to the variation in diffusion rate and leachate-soil interaction. The chloride profiles also indicated that adveetion may be the dominant contaminant transport mechanism at this site. The total contents ofCu, Pb and Cr are very close to the background levels and the concentration values of these metals mainly are lower than the threshold values specified by the Chinese soil quality standard and the European one. The water-extractable concentrations of COD in the surface of the silty clay generally exceed the limit value specified by the Chinese standard. The concentrations of copper and chromium in pore water are 1-2 orders of magnitude less than the total concentrations of these heavy metals within the soils, implying that heavy metals are mainly adsorbed by the soil particles. Finally, remediation methods were suggested for this landfill site.     

A PE teacher

正Mr Wang is a PE teacher at Chong Ming Primary School.He can speak a little English.Sometimes he gives orders in English.Such as,stand in a line,put your feet together,jump up and down,lie on your back.He teaches very well and his class is very interesting.His students like him very much.Look!The children are in the playground.They are having a PE lesson.The boys are playing basketball.Mr Wang is     

撒哈拉沙漠

The Sahara1is the largest desert in the world,1,000miles from south to north and3,000miles from east to west.But you mustn’t think of it as a“sea of sand”.There are plains of hard sands andplateaux2with dried-up water,and there are mountain ranges.Most of the Sahara receivesalmost no rain at all,and so there are no trees,no flowers and grass.But there are places with plenty of underground3water.Where underground watercomes to the surface,there are oases4.There you willfind lots ofdate-pal…     

Modeling the kinetics of methane conversion in steam reforming process of coke-oven gas based on experimental data

Steam-reforming is an effective approach for upgrading methane and hydrocarbon of coke-oven gas into CO and H2, but the kinetic behavior needs more study. We investigated the conversion of methane in coke-oven gas by steam reforming process in an electric tubular flow at 14 kPa with temperature varying from 500 °C to 950 °C, and developed a kenetic model for , ignoring the effects of adsorption and diffusion. The optimal dynamic conditions for methane conversion 14 kPa are as follows:the ratio of the amount of water to the amount of methane is from 1.1 to 1.3;the reaction temperature is from 1 223 K to 1 273 K. The methane conversion rate is larger than 95% when the ratio of the amount of water to the amount of methane is 1.2 at a temperature above 1 223 K with the residence time up to 0.75 s.