In 2001 the United Kingdom was hit again by foot-and-mouth disease the first time since the 1960s causing a national crisis. However much of the panic and confusion was spread largely as a result of ignorance of the disease.

 Foot-and-mouth is a highly contagious （传染性的） disease found  in Africa  South America  Asia  the Middle East and parts of Europe. It affects cloven-footed （偶蹄） domestic animals such as cows  pigs  sheep and goats  as well as wild animals like rats and deer and zoo animals such as elephants. Horses  however  cannot contract （感染） the disease.

 It is very rare for humans to catch  the disease. Indeed only one case  has been recorded in Great Britain and that was in 1967.  

 Foot-and-mouth disease is insidious （潜伏的） and can  be spread by direct or indirect contact with infected animal. The disease can be spread in the wind  and can also be spread by people  equipment or vehicles which have been in contact with the disease.

 Although the authorities do not really know where this latest outbreak of the disease originated  it can enter a country in frozen meat imported from other countries where the disease is common. Unlike Mad Cow Disease （BSE） and the human equivalent CJD  foot-and-mouth has no implications （牵连） for the human food chain. Any meat  milk  cheese  and other dairy products can be consumed quite safely.

 It seems that the only way to contain the disease is to kill infected animals. There is no cure for the disease  and although adult animals normally recover in 2~3 weeks   they  sadly remain carriers of the virus （病毒） for up to two years.

 From the time the disease was first reported to the time the epidemic （流行） was officially declared over  one and a half million and more domestic animals were slaughtered （屠宰） and  large areas of the countryside were closed to the public. These areas included  parks  woods and forests  and various leisure attraction  in the countryside.  

Many people tend do(倾向于) remember events that never happened, according to new research led by Dr. Kimberley Wade from the University of Warwick.

In a study on false(虚假的) memories, Dr. Wade shows his findings. He says if we are told about a completely fictitious(虚构的) event from our lives, and repeatedly imagine that event happening, almost half of us will accept that it did happen.

Over 400 participants(参与者) in this study had fictitious event suggested to them. And it was found that around 50% of the participants believed, to some degree, that they had experienced those events. Participants in this study came to remember false events, such as playing a trick on a teacher, or creating trouble at a family wedding and so on.

30% of the participants appeared to "remember" the event. They accepted the suggested event, and could describe how the event happened and even what the event was like. Another 23% showed signs that they accepted the suggested event and believed it really happened.

Dr. Wade says that it can be very difficult to decide when a person is recalling(回想) real past events even in a controlled research environment. And it is harder in real-life situations.

Dr. Wade says something about the importance of this study: "We know that many factors(因素) influence the creation of false beliefs and memories, such as asking a person to repeatedly imagine a false event or to view photos to "jog" their memory. But we don't fully understand how all these factors influence each other. The finding that many people tend to develop false beliefs is important. We know from other research that changed beliefs can influence people's behavior and attitudes."

Scientists have been using the results of such studies for 20 years to figure out how people can come to remember completely false experiences.

People like dolphins because they are both lovely and clever．They have an  (1)  IQ （智商）．

Dolphins can ‘talk’．Scientists try to ‘talk' with dolphins，and the results make them   (2)  ．They find that dolphins   (3)  understand them so well．

  (4)  animals enjoy playing，but dolphins like to make their games different．On a beautiful day in 1997，scientists on a beach   (5)  a little dog going into the sea．They were surprised to see the dolphins come up to the dog and then start

throwing（扔） it into the air．The dog   (6)  the ‘game' and kept playing with the dolphins for over an hour．

Dolphins live in a very different world from   (7)  ，but they are very good at our ‘IQ tests（测试）'．For example， a dolphin jumps  (8)   the water when he hears a whistle noise（哨声）．He does this because he will get a fish   (9)   an award．

There is   (10)   much to learn about these lovely friends．

Butterflies are common all over the world, but butterflies in hotter countries are usually bigger and more brightly colored than those in cooler countries, and there are more different kinds.

   Usually the male（雄性的）butterflies are more brightly colored than the females. The females have bigger and heavier bodies since they carry the eggs. The bright colors of the males help to attract the  females, and the duller（较暗淡的）colors of the females make them less likely（可能的）to be caught by enemies before they have laid their eggs.                                                         

   Some butterflies have bright pattern colors on the upper surface of their wings that show when flying, but when they rest on a tree or leaves, they close their wings. On the undersides of their wings there are green and brown marks which look like the tree or leaves. They are then difficult to be seen. The best example of this is the Dead Leaf Butterfly. When its wings are c1osed, it looks exactly like a dead leaf. There are even marks that look like the holes in a dead leaf. When the butterfly is run after by a bird, it closes its wings and seems to have disappeared completely.

   Many butterflies have round marks on their wings that look like eyes. The round marks have a useful function（功能）. When the butterflies are resting, their wings are closed, and these marks can’t be seen. When a bird sees one, and begins to attack it, the butterfly will open its wings. The bird thinks that it sees two eyes staring at it, frightened, and flies away.

Where does your food come from？How is it made？These days，many people worry about food safety．But food safety is not a new worry．In 1906，Upton Sinclair wrote the Jungle．The book is the story of a poor family in Chicago．It is also about the dangerous ways that food was prepared．People were so worried that the U．S．started testing food．
These days，most food in the world is safe．Laws control where food comes from．They also control how food is managed and prepared．Laws are important． But it’s more important to make sure the rules are followed．A good food safety system（系统）keeps people safe．It also helps them eat healthy food．Labels（标签）on food give people important information．Then they can make good choices about their food．
Although food safety systems usually work，there can be problems．Sometimes mistakes are made．For example，a truck might carry eggs and then ice cream．The ice cream could make people sick when the truck isn’t cleaned before carrying it．Other problems are not mistakes．Sometimes companies break rules to make more money．When this happens，people don’t know if their food is safe．
As we all know，food is closely related to our daily life．We should take actions to make food safer！

71题完成句子；72～73题简略回答问题；74题找出并写下第三段的主题句；75题将文中画线句子译成汉语．

People were so worried about food safety that the U．S．started______ ．

What can people do after reading the information on food labels？
______ ．

When could ice cream make people sick in the example？
______ ．