Is there anything strange on the top of the world's highest mountains? If so, is it a bear? Is it a monkey? Or is it a kind of man?
No one 1. The world has tried their best to know more about this mystery (神秘) for years. In 1887, 2 mountain climber found very big footprints of a very large man. 3 man doesn't walk barefoot（光脚）in the snow. In 1906, 4 climber saw more than footprints. To his surprise, he saw a great hairy animal 5 on two legs. As he watched, it ran out of sight（视线）.
Fifteen years later, there were 6 about the thing in the newspapers. A mountain climber said that he had seen the “snowman” 7 slowly across the snow, far below him. He said it looked like a very large hairy man.
From that time on, more and more people had stories to tell. But not until 1951 did a mountain climber bring back 8 of giant (巨大的) footprints. The picture showed 9 that the snowman walked on two legs. So it was not a bear or a monkey. Could it be an ape man? The mystery grew!
And the mystery keeps on growing. 10 men still hunt the snowman in the high mountains. Some day we may find out just what it is that makes the giant footprints.
Many animals do strange things before an earthquake. This news may be important. Earthquakes can kill people and knock down homes. The animals may help to save lives.
Some animals make a lot of noise before an earthquake. Farmers have told about this. Dogs that are usually quiet have started to bark(吠). Horses on farms have run around in circles. Mice have left their holes and run away. Cows have given less milk.
In a town in Italy, cats raced down the street in a group. That happened only a few hours before an earthquake. In San Francisco, a man kept tiny pet frogs. One Sunday, the frogs jumped around more than ever. They made loud noises, like bigger frogs. That night, an earthquake struck the city.
People want to know when an earthquake is coming. Then they could get away safely. Right now, there is no sure way to know ahead of time. Maybe the best idea is watching the animals.
The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning（旋转）of the earth. At the equator（赤道）day and night are sometimes the same length（长度）. They are each twelve hours long. The sun rises at 6 o'clock in the morning and sets at 6 o'clock in the evening. For six months the North Pole（北极）is tilted（倾斜）toward the sun. In those months the Northern Hemisphere（半球）gets more hours of sunlight than the Southern Hemisphere（半球）. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.
The leaders （领导人） of 13 countries had a big meeting in St Petersburg, Russia from November 21 to 24, 2010.The meeting was about tigers. They talked about the ways to protect the animals in their countries. They agreed to spend more money protecting tigers and they wanted to double the number of tigers in the world before 2022.
Tiger is one of the world's most endangered animals. The World Wildlife Fund （WWF） says, there are only about 100,000 wild tigers now. And the number is becoming smaller and smaller. 'If nothing happens, tigers will face disasters,' said WWF spokeswoman Marie von Zeipel.
Nine types of tigers lived 100 years ago, but now at least three of them have died out. ‘If people leave tigers alone and don't kill them, then the number of tigers will double in 10 years,' said Jean-Christoph Vie, a French tiger expert (专家).
China is one of the 13 countries where tigers live. There are about 50 wild tigers in China now. They are the Bengal tigers in Tibet, Indochinese tigers in China's southwest, and Siberian tigers in the northeast. The South China tigers lived in southeast China many years ago but disappeared in the 1970s. Many experts think they have already died out.
The world's first “flying car” will soon appear in the market — It will be yours for just ￡127,000.
The Terrafugia Transition is a light sport plane with four wheels (轮子) and foldable (可折叠的)wings. It can fly up through the skies just like a regular plane, then land on the ground, fold up its two wings and drive down the road at highway speeds.
It is 19 feet long and can fly a distance (距离) of 460 miles, with a top speed of 115mph in the air and 60mph on the highway. According to early reports, the plane uses common gas — no rocket fuels (燃料) are necessary. It gets its power through the 100 horsepower four — stroke Rotax 912S engine（发动机）.
It is about as wide as most normal cars except the folded gliders. The Terrafugia Transition can be put into most garages(车库) and drive normally on the road. A special code from a pilot's license is needed to get the wings to unfold.
Interested pilots (yes, you need to be a licensed flyer or a driver with a pilot's license (执照) to buy one) can get an order of the flying car (or the highway plane) for ￡6,500. It is planned to be finished towards the end of the year.
Title: The world's first flying car
Questions | Answers |
What's it like? | It has four wheels and two foldable . It is 19 feet long and a little wider than a normal car. |
What's its speed? | It can run 60 miles per hour on the highway and 115 miles per hour in the sky. |
What's the power of it? | It's to use rocket fuels. It's powered by the 100 horsepower fore——stroke Rotax 912S engine. |
What's the of it? | You can get the flying car for ￡127,000. |
Who can buy it and how? | A who has got a pilot's license can order it for ￡6,500 and the get it after paying the rest money. |
It seems to us that Earth stands quite stable (稳定的). But it is really m all the time. It turns around a make-believe line through its centre. We c this make-believe line Earth's axis(轴). The t ends（尽头） of Earth's axis are its poles(极). It t Earth 24 hours to travel around its axis once. We look at the sun and say it ‘rises' and t across the sky, but the sun doesn't really do so. It is the turning of E that makes us feel that the sun were moving across the sky. We can't see the Earth is moving b everything on Earth is turning around it.
As Earth moves around every 24 hours, the first half of Earth faces the sun and then the other h. When our half of Earth is f the sun, we say it is day. When our half is a from the sun, we say it is night. It is the turning of Earth that tells us when to get up and when to go to bed.
