Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.1.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.2.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.3.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.4.___.

Biological ClockWhen the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart , happen every second____1_____.Scientists use the term biological clock to describe the timing that controls biological rhythms_____2____.In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm_____3____.Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）____4_____.People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.Biological clocks control many rhythms of life_____5____.Doctors are looking for new wayside to make traveling more comfortable and medical treatment more effective.5.___.

Brotherly LoveAdidas and Puma have been two of the biggest names in sports shoe manufacturing for over half a century.Since 1928 they have supplied shoes for Olympic athletes, World Cup-winning football heroes, Muhammad Ali, hip hop stars and rock musicians, who were famous all over the world. But the story of these two companies begins in one house in the town of Herzogenaurach, Germany.Adolph and Rudolph Dassler were the sons of a shoemaker. They loved sport but complained that they could never find comfortable shoes to play in. Rudolph always said, “You cannot play sports wearing shoes that you' d walk around town with."So they started making their own. In 1920 Adolph made the first pair of athletic shoes with spikes（钉），produced on the Dasslers' kitchen table.On 1 July 1924, they formed a shoe company, Dassler Brothers Ltd and they worked together for many years. The company became successful and it provided the shoes for Germany' s athletes at the 1928 and 1932 Olympic Games.But in 1948 the brothers argued. No one knows exactly what happened, but family members have suggested that the argument was possibly about money or women. The result was that: Adolph left the company. His nickname was Adi, and using this and the first three letters of the family name, Dassler, he founded Adidas.Rudolph relocated across the River Aurach and founded his own company too. At first he wanted to call it Ruda, but eventually he called it Puma, after the wild cat. The famous Puma logo of the jumping cat has hardly changed since.After the big split of 1948 Adolph and Rudolph never spoke to each other again and their companies have now been in competition for over sixty years. Both companies were for many years the market leaders, though Adidas has always been more successful than Puma. And in 2005 Adidas bought Reebok, another big sports shoe company.The terrible family argument should really be forgotten, but ever since it happened, over sixty years ago, the town has been split into two. Even now, some Adidas employees and Puma employees don' t talk to each other.1.There are more than two biggest and most popular brands for sports shoes in the world.

Brotherly LoveAdidas and Puma have been two of the biggest names in sports shoe manufacturing for over half a century.Since 1928 they have supplied shoes for Olympic athletes, World Cup-winning football heroes, Muhammad Ali, hip hop stars and rock musicians, who were famous all over the world. But the story of these two companies begins in one house in the town of Herzogenaurach, Germany.Adolph and Rudolph Dassler were the sons of a shoemaker. They loved sport but complained that they could never find comfortable shoes to play in. Rudolph always said, “You cannot play sports wearing shoes that you' d walk around town with."So they started making their own. In 1920 Adolph made the first pair of athletic shoes with spikes（钉），produced on the Dasslers' kitchen table.On 1 July 1924, they formed a shoe company, Dassler Brothers Ltd and they worked together for many years. The company became successful and it provided the shoes for Germany' s athletes at the 1928 and 1932 Olympic Games.But in 1948 the brothers argued. No one knows exactly what happened, but family members have suggested that the argument was possibly about money or women. The result was that: Adolph left the company. His nickname was Adi, and using this and the first three letters of the family name, Dassler, he founded Adidas.Rudolph relocated across the River Aurach and founded his own company too. At first he wanted to call it Ruda, but eventually he called it Puma, after the wild cat. The famous Puma logo of the jumping cat has hardly changed since.After the big split of 1948 Adolph and Rudolph never spoke to each other again and their companies have now been in competition for over sixty years. Both companies were for many years the market leaders, though Adidas has always been more successful than Puma. And in 2005 Adidas bought Reebok, another big sports shoe company.The terrible family argument should really be forgotten, but ever since it happened, over sixty years ago, the town has been split into two. Even now, some Adidas employees and Puma employees don' t talk to each other.2.Since 1928, Adidas and Puma have supplied shoes only for famous people in the sports field.

Brotherly LoveAdidas and Puma have been two of the biggest names in sports shoe manufacturing for over half a century.Since 1928 they have supplied shoes for Olympic athletes, World Cup-winning football heroes, Muhammad Ali, hip hop stars and rock musicians, who were famous all over the world. But the story of these two companies begins in one house in the town of Herzogenaurach, Germany.Adolph and Rudolph Dassler were the sons of a shoemaker. They loved sport but complained that they could never find comfortable shoes to play in. Rudolph always said, “You cannot play sports wearing shoes that you' d walk around town with."So they started making their own. In 1920 Adolph made the first pair of athletic shoes with spikes（钉），produced on the Dasslers' kitchen table.On 1 July 1924, they formed a shoe company, Dassler Brothers Ltd and they worked together for many years. The company became successful and it provided the shoes for Germany' s athletes at the 1928 and 1932 Olympic Games.But in 1948 the brothers argued. No one knows exactly what happened, but family members have suggested that the argument was possibly about money or women. The result was that: Adolph left the company. His nickname was Adi, and using this and the first three letters of the family name, Dassler, he founded Adidas.Rudolph relocated across the River Aurach and founded his own company too. At first he wanted to call it Ruda, but eventually he called it Puma, after the wild cat. The famous Puma logo of the jumping cat has hardly changed since.After the big split of 1948 Adolph and Rudolph never spoke to each other again and their companies have now been in competition for over sixty years. Both companies were for many years the market leaders, though Adidas has always been more successful than Puma. And in 2005 Adidas bought Reebok, another big sports shoe company.The terrible family argument should really be forgotten, but ever since it happened, over sixty years ago, the town has been split into two. Even now, some Adidas employees and Puma employees don' t talk to each other.3.The origins of the two companies are in the same house in the town of Herzogenaurach, Germany.

Brotherly LoveAdidas and Puma have been two of the biggest names in sports shoe manufacturing for over half a century.Since 1928 they have supplied shoes for Olympic athletes, World Cup-winning football heroes, Muhammad Ali, hip hop stars and rock musicians, who were famous all over the world. But the story of these two companies begins in one house in the town of Herzogenaurach, Germany.Adolph and Rudolph Dassler were the sons of a shoemaker. They loved sport but complained that they could never find comfortable shoes to play in. Rudolph always said, “You cannot play sports wearing shoes that you' d walk around town with."So they started making their own. In 1920 Adolph made the first pair of athletic shoes with spikes（钉），produced on the Dasslers' kitchen table.On 1 July 1924, they formed a shoe company, Dassler Brothers Ltd and they worked together for many years. The company became successful and it provided the shoes for Germany' s athletes at the 1928 and 1932 Olympic Games.But in 1948 the brothers argued. No one knows exactly what happened, but family members have suggested that the argument was possibly about money or women. The result was that: Adolph left the company. His nickname was Adi, and using this and the first three letters of the family name, Dassler, he founded Adidas.Rudolph relocated across the River Aurach and founded his own company too. At first he wanted to call it Ruda, but eventually he called it Puma, after the wild cat. The famous Puma logo of the jumping cat has hardly changed since.After the big split of 1948 Adolph and Rudolph never spoke to each other again and their companies have now been in competition for over sixty years. Both companies were for many years the market leaders, though Adidas has always been more successful than Puma. And in 2005 Adidas bought Reebok, another big sports shoe company.The terrible family argument should really be forgotten, but ever since it happened, over sixty years ago, the town has been split into two. Even now, some Adidas employees and Puma employees don' t talk to each other.4.The shoemaker has only two sons, Adolph and Rudolph.

Brotherly LoveAdidas and Puma have been two of the biggest names in sports shoe manufacturing for over half a century.Since 1928 they have supplied shoes for Olympic athletes, World Cup-winning football heroes, Muhammad Ali, hip hop stars and rock musicians, who were famous all over the world. But the story of these two companies begins in one house in the town of Herzogenaurach, Germany.Adolph and Rudolph Dassler were the sons of a shoemaker. They loved sport but complained that they could never find comfortable shoes to play in. Rudolph always said, “You cannot play sports wearing shoes that you' d walk around town with."So they started making their own. In 1920 Adolph made the first pair of athletic shoes with spikes（钉），produced on the Dasslers' kitchen table.On 1 July 1924, they formed a shoe company, Dassler Brothers Ltd and they worked together for many years. The company became successful and it provided the shoes for Germany' s athletes at the 1928 and 1932 Olympic Games.But in 1948 the brothers argued. No one knows exactly what happened, but family members have suggested that the argument was possibly about money or women. The result was that: Adolph left the company. His nickname was Adi, and using this and the first three letters of the family name, Dassler, he founded Adidas.Rudolph relocated across the River Aurach and founded his own company too. At first he wanted to call it Ruda, but eventually he called it Puma, after the wild cat. The famous Puma logo of the jumping cat has hardly changed since.After the big split of 1948 Adolph and Rudolph never spoke to each other again and their companies have now been in competition for over sixty years. Both companies were for many years the market leaders, though Adidas has always been more successful than Puma. And in 2005 Adidas bought Reebok, another big sports shoe company.The terrible family argument should really be forgotten, but ever since it happened, over sixty years ago, the town has been split into two. Even now, some Adidas employees and Puma employees don' t talk to each other.5.The first pair of athletic shoes with spikes was produced by the two brothers on the Dasslers1 kitchen table.