Red squirrels used to be a common sight in British forests and countryside. But there are fewer than 140,000 red squirrels left now and most of them are in Scotland. However, grey squirrels (introduced from North America) are now so common that many people dislike them. They can be legally（合法的）trapped and destroyed.

   On first sight, the two types of squirrel are similar. They both have a long tail, which helps the squirrel to balance when jumping from tree to tree, and the same large eyes, small ears and powerful back legs. However, the grey squirrel has a clear physical advantage over the red. The red squirrel has a head-and-body length of 19 to 23 centimeters, a tail length of 15 to 20 centimeters and a body weight of 250 to 340 grams. Compared to this, the grey squirrel is a larger animal. The head and body measures between 23 and 30 centimeters long and the tail is between 19 and 25 centimeters long. Adult grey squirrels are heavier, weighing between 400 and 600 grams. This size allows them to store more fat and helps them to survive a hard winter, which would be fatal（致命的）to their  smaller cousins .

So why are red squirrels losing out in competition with grey squirrels? Size is one factor, but there are others. Red squirrels live high up in trees, while grey squirrels spend more of their time on the ground. This means any loss of forests greatly influences the red squirrel population. Another reason for the grey squirrel's success is its ability to use food provided by people. Like the fox, the grey squirrel can survive in towns and cities. The other problem for the red squirrel is disease. Both squirrels carry a certain virus. While this doesn't seem to attack grey squirrels, it is fatal to red squirrels.

    Do you want to travel the countries in Asia? You don't have to travel very far. Follow us, you can find these Asian adventures(探险).

    Cycling in Guilin, China

    Get around the city by cycling through Guilin, in the Guangxi province of China. Mountains rise straight up, creating the only beauty. Bike paths take you past the villages and farms. Enjoy this beautiful views from your bike, or stop and talk with one of the villagers working in his field.

    Adventure advice: When your feet are tired, take a boat trip along the beautiful and famous Li River.

    White-water rafting in Nepal

    In Nepal, you can experience thrilling rapids(湍流) and the beauty of the Himalayas at the same time. Take a white-water rafting trip down the Sun Koki River, world-renowned for its powerful rapids. At night you'll camp beside the river on white water, enjoy the quiet, lonely Nepalese countryside.

    Adventure advice: Don't go rafting in summer. High water levels make it dangerous.

    Scuba diving in Malaysia

    Go diving in the clear waters around Spaded, an island in Malaysia, and discover an underwater world. You'll see large sea animals swimming along. The colorful coral along the reefs hides tiny fish. The wide kind of tropical life found around Spaded makes it famous for diving.

    Adventure advice: You can dive at Spaded, but you can't sleep there. The island is a protected park, but you can stay on one of the nearby islands.

Three {#blank#}1{#/blank#} Adventures

    One day,Eddy,the frog(青蛙)，meets his two friends：Tom，the squirrel(松鼠)，and Mary,the bird．

    "Eddy,can you climb trees?"asks Tom．

    "No，I can't，"says Eddy．Tom laughs(笑)and climbs up into a tree．

    "Eddy,can you sing?"asks Mary．

    "No，I can't，''says Eddy．Mary laughs and sings a beautiful song．

    "Look．"Eddy says．"I can swim．"He jumps into the water and swims．

    "That's nothing．"say Tom and Mary．

    Eddy is sad and he goes away．He meets a monkey and he learns to juggle(玩杂耍)from him．Then Eddy goes back to his friends and juggles for them．But they don't like it．Eddy is sad again．At that time they hear a baby bird crying in the water,"Help!Help!"

    ary and Tom can't swim，So they can't help the baby bird．Eddy jumps into the water and helps the baby bird out．

    "Thank you，Eddy!"says the baby bird．

    "You are great，Eddy,"say Mary and Tom．Eddy is very happy now．

根据材料内容完成下列任务。

    We sometimes call the lion “the king of the jungle” Because it is stronger and more dangerous than other animals.{#blank#}1{#/blank#}It is the highest animal in the land food chain.

    In the sea, the shark is one of the animals at the top of the food chain. It can swim faster than most other sea animals{#blank#}2{#/blank#}

    {#blank#}3{#/blank#}People are! We are not the biggest or fastest, but we are the cleverest. We could not run faster than cheetahs, so we invented cars and now we can move the fastest. We could not fight better than lions, so we invented guns. Now we can hunt the best. People's inventions are clever, but they can be dangerous, too. For example, people invented factories, and now they make the air and rivers dirty.{#blank#}4{#/blank#}Dirty rivers kill fish. Then bears cannot eat the fish and die. If we kill one part of the food chain. Other parts also die. Remember that we are a part of the food chain, so we are in danger, too!{#blank#}5{#/blank#}We should and we could do something for the world!