One zoo success story for a highly endangered species was that of the Arabian oryx. In their native habitats these antelopes had been hunted almost to extinction. In 1963 two males and one female were flown to the Phoenix Zoo in Arizona in a breeding program effort as a final remedy. The dry climate of Arizona was similar to that of Arabia, so it was hoped that the animals and their offspring would be able to survive under near-natural conditions. By 1990, more than 200 young had been bred at the Phoenix Zoo, and many others had been bred at other zoos around the country, providing a supply for efforts to reestablish the Arabian oryx in its native habitat.     Prom the details in the passage, it is clear that the program was .  

Many ecologists believe that fire plays an essential role in regenerating forests by clearing underbrush and destroying the least-healthy plant life. From 1972 onward, the United States National Park Service followed a free-burn policy that allowed natural fires — for example, those caused by lightning — to take their course so long as the fires posed no threat to human life or to private property. The free-burn policy was questioned during the summer of 1988, however, when a series of 13 major fires was touched off by lightning in Yellowstone National Park. The park was suffering a combination of hot weather, high winds and the worst drought in more than a century. Before September snows slowed the fires, almost 405,000 hectares had burned.   We learn from the passage that many ecologists think fires ...........  

Many ecologists believe that fire plays an essential role in regenerating forests by clearing underbrush and destroying the least-healthy plant life. From 1972 onward, the United States National Park Service followed a free-burn policy that allowed natural fires — for example, those caused by lightning — to take their course so long as the fires posed no threat to human life or to private property. The free-burn policy was questioned during the summer of 1988, however, when a series of 13 major fires was touched off by lightning in Yellowstone National Park. The park was suffering a combination of hot weather, high winds and the worst drought in more than a century. Before September snows slowed the fires, almost 405,000 hectares had burned.   From the passage, it is clear that the free-burn policy..........  

Many ecologists believe that fire plays an essential role in regenerating forests by clearing underbrush and destroying the least-healthy plant life. From 1972 onward, the United States National Park Service followed a free-burn policy that allowed natural fires — for example, those caused by lightning — to take their course so long as the fires posed no threat to human life or to private property. The free-burn policy was questioned during the summer of 1988, however, when a series of 13 major fires was touched off by lightning in Yellowstone National Park. The park was suffering a combination of hot weather, high winds and the worst drought in more than a century. Before September snows slowed the fires, almost 405,000 hectares had burned.   We can understand from the passage that at the time of the fires in 1988 in Yellowstone National Park, ..........  

The French philosopher Jean-Jacques Rousseau helped bring about a revolution in education. In his novel Emile he harshly criticised the way parents and teachers brought up and taught children. Rousseau urged that young people should be given freedom to enjoy sunlight, exercise and play. He recognised that there are definite periods of development in a child’s life, and he argued that children's learning should be scheduled to coincide with them. A child allowed to grow up in this fashion will achieve the best possible development. Education should begin in the home. Parents should not preach to their children but should set a good example. Rousseau believed that children should make their own decisions.     According to the passage, it was Jean-Jacques Rousseau’s belief that.........  

The French philosopher Jean-Jacques Rousseau helped bring about a revolution in education. In his novel Emile he harshly criticised the way parents and teachers brought up and taught children. Rousseau urged that young people should be given freedom to enjoy sunlight, exercise and play. He recognised that there are definite periods of development in a child’s life, and he argued that children's learning should be scheduled to coincide with them. A child allowed to grow up in this fashion will achieve the best possible development. Education should begin in the home. Parents should not preach to their children but should set a good example. Rousseau believed that children should make their own decisions.     We learn from the passage that Jean-Jacques Rousseau ...........  

The French philosopher Jean-Jacques Rousseau helped bring about a revolution in education. In his novel Emile he harshly criticised the way parents and teachers brought up and taught children. Rousseau urged that young people should be given freedom to enjoy sunlight, exercise and play. He recognised that there are definite periods of development in a child’s life, and he argued that children's learning should be scheduled to coincide with them. A child allowed to grow up in this fashion will achieve the best possible development. Education should begin in the home. Parents should not preach to their children but should set a good example. Rousseau believed that children should make their own decisions.     The author points out in the passage that Jean-Jacques Rousseau’s novel Emile.......... .  

Sherwood Anderson was bom in Camden, Ohio, on September 13, 1876, the third child of eight. His father was an irresponsible man who could not hold a job long, but he was a colourful talker and storyteller. Most of Anderson’s boyhood was spent in the small town of Clyde, Ohio, where he attended school irregularly. When he was only 14, his mother died, and Anderson ended his formal education. The young man drifted from one job to another, finally welcoming the chance to serve in the Spanish-American War. When the war was over, he returned to Ohio and eventually became manager of a paint factory. It was at this time that Anderson began to write. He became more and more absorbed in writing. One day he walked out of the factoiy, apparently on a sudden impulse, never to return. In 1916 his first novel. Windy McPherson's Son, was published. It was a story of factory life, based on his own experiences. In his short stories and novels, Anderson protested against the frustrations of ordinary people. He was a master of colloquial speech. His concern with the unfulfilled lives of "little” people probably came from his early observations of life.   It is obvious from the passage that before Anderson adopted writing as a career, he...........  

Sherwood Anderson was bom in Camden, Ohio, on September 13, 1876, the third child of eight. His father was an irresponsible man who could not hold a job long, but he was a colourful talker and storyteller. Most of Anderson’s boyhood was spent in the small town of Clyde, Ohio, where he attended school irregularly. When he was only 14, his mother died, and Anderson ended his formal education. The young man drifted from one job to another, finally welcoming the chance to serve in the Spanish-American War. When the war was over, he returned to Ohio and eventually became manager of a paint factory. It was at this time that Anderson began to write. He became more and more absorbed in writing. One day he walked out of the factoiy, apparently on a sudden impulse, never to return. In 1916 his first novel. Windy McPherson's Son, was published. It was a story of factory life, based on his own experiences. In his short stories and novels, Anderson protested against the frustrations of ordinary people. He was a master of colloquial speech. His concern with the unfulfilled lives of "little” people probably came from his early observations of life. We learn from the passage that Anderson...........  

Sherwood Anderson was bom in Camden, Ohio, on September 13, 1876, the third child of eight. His father was an irresponsible man who could not hold a job long, but he was a colourful talker and storyteller. Most of Anderson’s boyhood was spent in the small town of Clyde, Ohio, where he attended school irregularly. When he was only 14, his mother died, and Anderson ended his formal education. The young man drifted from one job to another, finally welcoming the chance to serve in the Spanish-American War. When the war was over, he returned to Ohio and eventually became manager of a paint factory. It was at this time that Anderson began to write. He became more and more absorbed in writing. One day he walked out of the factoiy, apparently on a sudden impulse, never to return. In 1916 his first novel. Windy McPherson's Son, was published. It was a story of factory life, based on his own experiences. In his short stories and novels, Anderson protested against the frustrations of ordinary people. He was a master of colloquial speech. His concern with the unfulfilled lives of "little” people probably came from his early observations of life.   It is clear in the passage that Anderson's decision to leave his factoiy job was