You've probably heard of working dogs that help police officers. Or horses that help farmers. Did you know that carrier pigeons can be trained to help people too? Here are some examples.

Mailman

    Carrier pigeons can be trained to carry messages to people. The note is placed into a small can. The can is tied to the pigeon's leg. Then the pigeon flies off with the note.

Lifeguard

    From high up in the sky, specially trained pigeons can spot orange life jackets in the ocean. Sometimes it is difficult for humans to spot people lost at sea, especially when the weather is bad. However, pigeons can fly quickly over a large area of water to look for people.

Spy

    Many years ago, carrier pigeons were used to help our country during wars. "Spy pigeons" had small cameras that were tied to their feet. As a pigeon flew over enemy land, the camera took photos of the land below. This would allow our soldiers to see where the enemies were and what they were doing.

    So next time you see a pigeon, stop and watch it closely. What might look like an ordinary bird to most people might actually be helpful.

46. What kind of people can the carrier pigeons find?

    A. The people in orange life jackets at sea.

    B. The people in red jackets in the boats.

    C. The people swimming in the ocean.

    D. The people lost in the mountains.

47. Which of the following statements is TRUE according to the passage?

    A. A pigeon could predict what the weather would be like.

    B. A pigeon was tied with a small camera around its leg.

    C. A pigeon could help us to know the number of the enemy.

    D. A pigeon carried the camera to take photos of the enemy land.

48. What is the purpose of writing this article?

    A. To make readers like pigeons more.

    B. To teach readers about the lives of wild pigeons.

    C. To tell readers about real jobs held by carrier pigeons.

    D. To share science fictions about pigeons helping people.

Different colours can affect us in many different ways; that’s according to Verity Allen. In a new programme “Colour me Healthy”, Verity looks at the ways that colours can influence how hard we work and the choices we make. They can even change our emotions and even influence how healthy we are. 
“Have you ever noticed how people always use the same colours for the same things?” says Verity. “Our toothpaste is always white or blue or maybe red. It’s never green. Why not? For some reason we think that blue and white is clean, while we think of green products(产品)as being a bit unpleasant. It’s the same for businesses. We respect a company which writes its name in blue or black, but we don’t respect one that uses pink or orange. People who design（设计）new products can use these ideas to influence what we buy.”
During the programme, Verity studies eight different colours, two colours in each part. She meets people who work in the colour industry, from people who design food packages, to people who name the colours of lipsticks. Some of the people she meets clearly have very little scientific knowledge to prove their ideas, such as the American “Colour Doctor” who believes that serious diseases can be treated successfully by the use of coloured lights. However, she also interviews real scientists who are studying the effects of green and red lights on mice, with some surprising results. 
Overall, it’s an interesting show, and anyone who watches it will probably find out something new. But because Verity goes out of her way to be polite to everyone she meets on the programme, it’s up to you to make your own decisions about how much you should believe.
【小题1】What’s Verity’s opinion about colours?

Tony: These days, the word “clone” has appeared very often in the newspapers. Do you know its meaning?
Lana: I read a report. It said that Dr. Ian Wilmut successfully cloned a lamb* named Dolly from a grown-up sheep. So people call him the “father” of Dolly.
Tony: In fact, the word “clone” means to produce the “same” animal by taking cells* from a
grown-up one. I think, if we know how to do cloning, we need only to keep a small number
of sheep, cows or horses.
Lana: What’s more, these days some people even want to clone humans. They have asked: Can we
clone ourselves?                                                       
Tony: It seems interesting. But do you think it possible to do that?
Lana: No, impossible! First, I think we cannot clone a dead person, because the cells in his body are dead already.
Tony: Then can we clone a living person?
Lana: Again no! You might clone yourself one after another, but it is only a copy, not a real you. It is only something, not a “human”.
Tony: Well, you mean that it is not a real human.
Lana: True enough! I think Dr. Wilmut would most like to make better animals, and it has nothing to do with human cloning.
【小题1】The word “clone” means_________________.
复制  B 克隆 C 抄袭   D 制造
【小题2】Dolly was the name of _______.
A. the father of a sheep  B. a famous scientist  
C. . a grown-up sheep    D a sheep that was cloned
【小题3】Lana says Dr. Ian Wilmut is the “father” of Dolly. Here, she means __________.
Dr. Ian Wilmut was the first man to clone a sheep in his lab
Dr. Ian Wilmut gave Dolly a new life
Dr. Ian Wilmut took care of Dolly like a father
D.  Dr. Ian Wilmut has a daughter whose name is Dolly
【小题4】 From the conversation,          may be clone in our life.
A a tree   B a person   C  an elephant   D  an orange
【小题5】According to the conversation, we know about         .
Scientists have successfully cloned humans. 
Dr. Wilmut likes to do human cloning.
C. Cloned animals are better than humans.  
D. Lana doesn’t think humans shouldn’t be cloned.