In the forest or in the fields you can often see small hills of earth and busy little ants. Ants live in different 1 . An ant has two strong jaws to 2 soil, to cut up food, to 3 the eggs or the young.

　　The head of an ant is triangular (三角形), with two 4 eyes and sometimes three more very small 5 , which are made up of many parts, 6 the ant can see 7 that moves around it. Some of these eyes see things near it; others can see things 8 in the distance.

　　The ant has six legs. Its feelers have twelve joins (接合点), 9 which the ant finds its 10 in its underground home. Some ants do not 11 nests, but make use of hollows under stones or logs. Other ants build their little hills with 12 , bits of wood, sand and earth.

　　The life of ants is not only 13 and play. They must have rest too. But they don't 14 long. When waking up, they begin to 15 themselves. They use their tongues just 16 a cat uses hers.

　　Ants have a good 17 . When an ant, which has been away for a long time, returns to its nest, the others 18 it and show their greatest joy at its return. But if a strange ant 19 their nest, the ants will 20 the stranger killed at once.

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　　In the forest or in the fields you can often see small hills of earth and busy little ants. Ants live in different 1 . An ant has two strong jaws to 2 soil, to cut up food, to 3 the eggs or the young. The head of an ant is triangular(三角形的), with two 4 eyes and sometimes three more very small 5 , which are made up of many parts, 6 the ant can see 7 that moves around it. Some of these eyes see things near it; others can see things 8 in the distance.

　　The ant has six legs. Its feelers have twelve joins (接合点), 9 which the ant finds its 10 in its underground home. Some ants do not 11 nests, but make use of hollows under stones or logs. Other ants build their little hills with 12 , bits of wood, sand and earth. The life of ants is not only 13 and play. They must have rest too. But they don't 14 long. When waking up, they begin to 15 themselves. They use their tongues just 16 a cat uses hers.

　　Ants have a good 17 . When an ant, which has been away for a long time, returns to its nest, the others 18 it and show their greatest joy at its return. But if a strange ant 19 their nest, the ants will 20 the stranger killed at once.

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Sea turtles are found in all warm waters throughout the world. Sea turtles are the___36____ of the turtles. The largest kind of sea turtle can grow as long as eight feet and ___37___ 1,500 pounds. Even the smallest kind, Kemp’s-Ridley, can ___38___ to 28 inches long and weigh almost 100 pounds. Many other turtles are small enough to___39___ in your hand. It is difficult to find population numbers for sea turtles because they do not___40____ shore once they hatch and reach the ocean, which makes it hard to ___41___ them. Sea turtles___42___ in the water because they are safer there. They cannot___43___ their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __44___ other animals that want to eat them. They need to move quickly to stay safe.
When the weather ___45___ warm, sea turtles leave the ocean to___46___ their eggs on the beach. This is the only time they will ever leave the water. Most___47____ turtles spend part of the time in water___48___ part of the time on land. It is easy to understand___49____ sea turtles stay in the water. Their___50___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet make it hard for them to ___51___ on land. They are better___52___ for life in the water. They are well suited for life in the sea because of__53___ their bodies are made.
The way their feet are made helps sea turtles swim very quickly. Their feet look like long __54___. When they swim, they flap their feet like a bird flaps its wings. This ___55___ way of swimming benefits sea turtles. It allows them to escape from their enemies.

Sea turtles are found in all warm waters throughout the world. Sea turtles are the___36____ of the turtles. The largest kind of sea turtle can grow as long as eight feet and ___37___ 1,500 pounds. Even the smallest kind, Kemp’s-Ridley, can ___38___ to 28 inches long and weigh almost 100 pounds. Many other turtles are small enough to___39___ in your hand. It is difficult to find population numbers for sea turtles because they do not___40____ shore once they hatch and reach the ocean, which makes it hard to ___41___ them. Sea turtles___42___ in the water because they are safer there. They cannot___43___ their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __44___ other animals that want to eat them. They need to move quickly to stay safe.

When the weather ___45___ warm, sea turtles leave the ocean to___46___ their eggs on the beach. This is the only time they will ever leave the water. Most___47____ turtles spend part of the time in water___48___ part of the time on land. It is easy to understand___49____ sea turtles stay in the water. Their___50___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet make it hard for them to ___51___ on land. They are better___52___ for life in the water. They are well suited for life in the sea because of__53___ their bodies are made.

The way their feet are made helps sea turtles swim very quickly. Their feet look like long __54___. When they swim, they flap their feet like a bird flaps its wings. This ___55___ way of swimming benefits sea turtles. It allows them to escape from their enemies.