The water isn''''t deep

It is a Saturday morning.Lin Tao has___classes today.After breakfast,he___.He is going to his grandpa's house. Now he is on the way there.After a while,he___a river.This river is not wide.There is a board(木板)___the river.Lin Tao___the board.Suddenly the board moves,and Lin Tao___the river."Help! Help!"Lin Tao is crying.But___comes.He___in the water for a few minutes.But nothing happens.He begins to___Aha,the water is not___It only comes to half his legs.     

Assessment of dam impacts on river flow regimes and water quality: a case study of the Huai River Basin in P. R. China

The Huai River Basin is a unique area in P. R. China with the highest densities of population and water projects. It is also subject to the most serious water pollution. We proposed a distributional SWAT （Soil and Water Assessment Tool） model coupled with a water quality-quantity balance model to evaluate dam impacts on river flow regimes and water quality in the middle and upper reaches of the Huai River Basin. We calibrated and validated the SWAT model with data from 29 selected cross-sections in four typical years （1971, 1981, 1991 and 1999） and used scenario analysis to compensate for the unavailability of historical data regarding uninterrupted river flows before dam and floodgate construction, a problem of prediction for ungauged basins. The results indicate that dam and floodgate operations tended to reduce runoff, decrease peak value and shift peaking time. The contribution of water projects to river water quality deterioration in the concerned river system was between 0 to 40%, while pollutant discharge contributed to 60% to 100% of the water pollution. Pollution control should therefore be the key to the water quality rehabilitation in the Huai River Basin.     

如何致谢和答谢

Ted worked in a factory in a big town. He liked fishing very much, and was very good at it.Whenever he was free. he wouht go down to the small river behind the factory, and tried to catchsome fish, but there were very few there, because the water was dirty. Last summer he went to the seaside during his holidays and stayed at a small cheap hotel.     

一杯牛奶的恩惠

Once,there was a poor boy,who made a living by selling various things from door to door.This was the way he earned money to pay for his school. One day,as he was walking from house to house as usual,he felt very hungry and weak.He decided to ask for food at a house.He knocked on the door,and was surprised to see a beautiful young girl open the door.And then,he asked the girl for a glass of water.     

雾都孤儿(4)

Oliver stayed a prisoner alone in the dark room for a week.He criedbitterly all day,and when the long night came,he spread his little handsover his eyes to shut out the darkness,and tried to sleep.He was givenfreezing water to wash with,and was beaten dajly by Mr Bumble in front of     

开心一刻

The Rude ParrotDavid received a parrot for his birthday.Thisparrot was fully grown with a bad attitudeand very rude.David tried hard to changethe bird's attitude and was constantly saying politewords,playing soft music,anything that came tomind.Nothing worked.He yelled at the bird andthe bird got worse.He shook the bird and the birdgot madder and ruder.Finally,in a moment of des-     

Why Was the Dog Beaten by the Boy’s Father?

One afternoon some children were playing near a river.A 1 wasstanding near them.Suddenly the dog saw a little girl 2 into the river.The dog jumped 3 the water at once and helped the 4.5 shewas saved,the girl went back home.6 father brought some pieces of meatto the dog.     

完形乐园趣多多

Once,a gentleman was traveling in a train.He felt (1) and got down at a station in search of water.As soon as he reached the water tap[水龙头]the train started.He ran back,but(2) the train. He asked about the next train and knew that the next train was on the next day.So he decided to find a place to(3)the night.It was getting darker and he could not find a room.He was a little(4).     

Three-dimensional water-quality simulation for river based on VOF method

In the present study, considering the transport and transformation processes of variables, a threedimensional water quality model for the river system was established, which coupled the volume of fluid(VOF) method with the k-ε turbulence mathematical model. Then, the water hydrodynamic characteristics and transport processes for BOD_5, NH_(3~-)N and TP were analyzed. The results showed that the water surface of convex bank was a little lower than that of concave bank due to the centrifugal force near the bend, and most concentrations were inferior to the type Ⅴ standard indexes of surface water environmental quality. The model validation indicated that the errors between the simulated and monitored values were comparatively small, satisfying the application demands and providing scientific basis and decision support for the restoration and protection of water quality.     

幽默（英文）

正Clever Bobby Brown was very proud of his young son.Once he was talking to a visitor,telling the man how clever his son was."The boy is only two years old,"he said,"and he knows all animals.He's going to be a great naturalist(生物学家).Here,let me show you."He took a book of natural history from the bookself,placed Bobby     

你是鸡蛋、土豆还是咖啡豆?

A daughter complained to her father.She thought that her life was 1)miserable.She was tired of fighting and 2)struggling all the time.It seemed that just as one problem was solved,another one soon followed.Her father,a chef,took her to the kitchen.He filled three pots with water and 3)placed each over a high fire.When the water began to boil,he placed potatoes in one pot,eggs in the second pot,and 4)ground coffee beans in the third pot.He then left them boiling for a while without saying a word to his daughter.     

Does The Dog Know﹖

"Sam," says his father, "put on your cap and let us go for a walk."Sam is happy. He likes to go out with his father. He puts on his cap and coat and says, "Father, I am ready." Sam and his father go out into the street. Suddenly they see a big black dog. The dog begins to bark. Sam is afraid of the dog. He wants to run home. His father says, "Don't be afraid, Sam. Don't you know the proverb:'A barking dog does not biterb?"Does The Dog Know﹖…     

读故事记单词

A man tried to sell his neighbor a new dog for five dollars.“This is a talkingdog.”He said.“Stop behaving stupidly,”the neighbor rephed,“how can a beast likethat talk?Or you mean bark?”suddenly,the dog looked up and said with tears inhis eyes,“Please buy me,Sir.This man is mean.He keeps me in a barn and I haveto sleep in a barrel.He feeds me only beans and never walks me to the hay,and     

The Power of Kindness

Jim, a successful businessman, told the experience of his childhood.When he was 12, his parents died. He was alone and didn't get on well with others. People always laughed at him. No one showed kindness to him.His only friend was a dog named Tige. He gave his dog enough to eat and drink, but sometimes he was not polite to it. He didn't know that an unkind word sometimes could cut one's heart like a knife.O ne day as he w alked dow n the street, ayoung lady w as walking in frontofhim . Sudd…     

笑话四则

David joined the army when he was eighteen. And for several months he was taught how to be a good soldier. He did quite well in everything except shooting. One day he and his friends were practicing their shooting and all of them did well except David. At last the officer said, ＂David! You are quite hopeless! Do not waste your bullets. Go behind that wall and shoot yourself.＂     

趣味阅读

The Mississippi is one of the longest rivers in the world. It was called “The Father of Waters”by the American natives. Drinking water was got from the Mississippi by people in towns and cities. Water for industrial use was got from it by facto-ries. But today “The Father of Waters”is in trouble. A lot of large factories were built along the river. Millions of tons of in-dustrial water was poured into the river. Its water for drinking was no longer able to be used. Birds and fish wer…     

What Man Did Mike Help?

趣味阅读理解 Mike, a sixteen-year-old young man, likes sports. Sohe's the strongest in his class. It was a summer evening. It was too hot for him tostay in the rooms. He went out to the river. On the bridgehe met some of his friends and they talked for a long timeuntil late at night. When he was passing through a darkand narrow street, he heard someone calling for help. Inthe moonlight he saw a big man fighting with a muchsmaller man.     

阅读理解两则(英文)

(A) More than seven hundred years ago,the Prince of Wales had a very big and brave dog called Gelert. One day the Prince wanted to go hunting with his men.He told his dog to stay at home and look after his baby son.The baby was in a wooden cradle(摇篮),which was like a small bed. When the Prince came back from hunting,Gelert ran out to meet his     

狗与骨头

A dog once stole a bone from a butcher's（屠夫）shop. He ran off down the street as fast as he could, across the meadow（草地）in the village and down the hill to a bridge over a stream. There he stopped out of breath, to look at the clear, clean water.     

阅读理解精选

AA man went to buy a piece of meat.He askedthe butcher(屠夫 ) to tell him the way of cooking itbecause he didn't know how to cook meat.Thebutcher told him how to cook it.“But I can't remember your words,”the mansaid,“Will you please write your words down forme?”Thebutcher was a good man and he wrotehiswords down for the man.The man went homehappily with the meat in his hand and the note(便条 ) in his pocket.A dog saw the meat,jumped athim and took the meataway.The man stood there.He did…