标签:实验 相关文章
Reading and discussing Before you read the following text, read the title and look at the pictures. Discuss with a partner what you expect to read about in the text. AUSTRALIAS DANGEROUS CREATURES Australia is home to more than 170 different kinds o
Nicolaus Copernicus was frightened and his mind was confused. Although he had tried to ignore them, all his mathematical calculations led to the same conclusion: that the earth was not the centre of the solar system. Only if you put the sun there di
Art is influenced by the customs and faith of a people. Styles in Western art have changed many times. As there are so many different styles of Western art, it would be impossible to describe all of them in such a short text. Consequently, this text
Although it was autumn, the snow was already beginning to fall in Tibet. Our legs were so heavy and cold that they felt like blocks of ice. Have you ever seen snowmen ride bicycles? That's what we looked like! Along the way children dressed in long
THE STORY OF AN EYEWITNESS by Jack London Never before in history has a city been so completely destroyed. San Francisco is gone. Nothing is left of it but memories and some houses far from the centre of the city. Its businesses are gone. The factori
ELIAS STORY My name is Elias. I am a poor black worker in South Africa. The time when I first met Nelson Mandela was a very difficult period of my life. I was twelve years old. It was in 1952 and Mandela was the black lawyer to whom I went for advic
Body language is one of the most powerful means of communication, often even more powerful than spoken language. People around the world show all kinds of feelings, wishes and attitudes that they might never speak aloud. It is possible to read other
This was one of the most important archaeological discoveries of the 20th century. Its find was as dramatic and exciting as the discovery itself. Here is the story. The first hint The first hint that led to the discovery of the tomb of King Tutankham
Cloning has always been with us and is here to stay. It is a way of making an exact copy of another animal or plant. It happens in plants when gardeners take cuttings from growing plants to make new ones. It also happens in animals when twins identi
Suppose you were the president of a high school council and you received the letter below. It is from a group of students who would like to make their school more attractive. Read the letter and then use the outline on the next page to make notes for
The Frick Collection (5th Avenue and E.70th Street) Many art lovers would rather visit this small art gallery than any other in New York. Henry Clay Frick, a rich New Yorker, died in 1919, leaving his house, furniture and art collection to the Ameri
Your home can be a dangerous place. But, if you understand what you can do to make your home safer, you can prevent accidents. And always keep a first-aid kit in your home - just in case ( 以防 ) there is an accident. The kitchen, bathroom and bedro
PERU Peru offers a variety of experiences from ancient ruins and centuries-old Spanish villages to thick forests, high mountains and desert coastline. TRAVEL PERU offers tours for all ages and tastes. The following tours are based at Cuzco, the site
Would you like to donate an unusual gift? Then this is the catalogue for you. The gift you give is not something your loved one keeps but a voluntary contribution towards the lives of people who really need it. Choose from this catalogue a really us
Pausanias, who was a Greek writer about 2,000 years ago, has come on a magical journey on March 18th, 2007 to find out about the present-day Olympic Games. He is now interviewing Li Yan, a volunteer for the 2008 Olympic Games. P: My name is Pausania
What is a fact? Is it something that people believe? No. A fact is anything that can be proved. For example, it can be proved that China has more people than any other country in the world. This is a fact. Then what is an opinion? An opinion is what
Have you ever wanted to be part of a band as a famous singer or musician? Have you ever dreamed of playing in front of thousands of people at a concert, at which everyone is clapping and appreciating your music? Do you sing karaoke and pretend you a
My name is Hua Fei and I am a sporting robot of the 23rd century. I am an expert at high flying exercises. I jump from spaceships and as I fall I turn, dive, circle and dance until I softly land as close as I can to the finishing line. Robot competi
Not long after Freddy and the band became famous, they visited Britain on a brief tour. Fans showed their devotion by waiting for hours to get tickets for their concerts. Freddy was now quite confident when he went into a concert hall. He enjoyed si
Rats with high blood pressure benefited from a long-term diet rich in capsaicin, which gives the heat to hot peppers and starts a chemical sequence that relaxes blood vessels. Heres a possible blood pressure remedy. But its only for those who can sta