题目
Scientists have successfully used satellite cameras to count animals in complex geographical environments，taking environmentalists an important step forward in monitoring populations of endangered species. For this research，the satellite Worldview 3 used high-quality pictures to monitor African elephants moving through forests and grasslands. The automated（自动化）system detected animals with the same accuracy as humans are able to achieve. The new surveying technique，created by Dr. Olga Isupova at the University of Bath in the UK with some other scientists，allows vast areas of land to be scanned in a matter of minutes，offering a much-needed alternative to human observers counting individual animals from low-flying airplanes. As it sweeps across the land，a satellite can collect over 5，000 km2 of pictures every few minutes，avoiding double counting. Where necessary， the process can be repeated the next day. The population of African elephants has nose-dived over the past century，mainly due to hunting illegally and habitat（栖息地） ruin. With only 40，000-50，000 elephants left in the wild，the species is classified as endangered. "Accurate monitoring is essential if we're to save the species，" said Dr. Isupove. "We need to know where the animals are and how many there are." Satellite monitoring avoids disturbing animals during date collection and ensures humans are not hurt in the counting process. It also makes it simpler to count animals moving from country to country， as satellites can orbit the planet without regard for border controls or conflict. This study was not the first to use satellite pictures and algorithms（计数法）to monitor species，but it was the first to reliably monitor animals moving through a complex environment ---that is，an environment that includes areas of open grassland， woodland and partial coverage. "This type of work has been done before with whales， but of course the ocean is all blue， so counting is a lot less challenging，" said Dr. Isupova. "As you can imagine， a complex environment makes it much harder to identify animals." The researchers believe their work shows the potential of technology to support environmentalists to protect biodiversity and to slow the progress of the sixth mass extinction（灭绝）---the ongoing extinction event caused by human activity.（1）Why did the scientists create the satellite cameras？ ____ A. To count animals in complex environment.B. To increase the number of wild animals.C. To train the skills of observing animals.D. To drive the elephants out of forests in Africa.（2）What can we learn about the new surveying technique？ ____ A. It's individual.B. It's complex.C. It's dangerous.D. It's accurate.（3）What is the condition of African elephants？ ____ A. They are rapidly increasing.B. They are in diversity.C. They are rapidly reducing.D. They are in balance.（4）What would be the best title for this passage？ ____ A. Making the Satellite Worldview 3 for Biodiversity.B. Using Satellite to Monitor Endangered Species.C. Supporting Hunting with new Technology.D. Introducing Dr. Olga Isupova at the University of Bath.
Scientists have successfully used satellite cameras to count animals in complex geographical environments，taking environmentalists an important step forward in monitoring populations of endangered species.
For this research，the satellite Worldview 3 used high-quality pictures to monitor African elephants moving through forests and grasslands. The automated（自动化）system detected animals with the same accuracy as humans are able to achieve. The new surveying technique，created by Dr. Olga Isupova at the University of Bath in the UK with some other scientists，allows vast areas of land to be scanned in a matter of minutes，offering a much-needed alternative to human observers counting individual animals from low-flying airplanes. As it sweeps across the land，a satellite can collect over 5，000 km2 of pictures every few minutes，avoiding double counting. Where necessary， the process can be repeated the next day.
The population of African elephants has nose-dived over the past century，mainly due to hunting illegally and habitat（栖息地） ruin. With only 40，000-50，000 elephants left in the wild，the species is classified as endangered.
"Accurate monitoring is essential if we're to save the species，" said Dr. Isupove. "We need to know where the animals are and how many there are." Satellite monitoring avoids disturbing animals during date collection and ensures humans are not hurt in the counting process. It also makes it simpler to count animals moving from country to country， as satellites can orbit the planet without regard for border controls or conflict.
This study was not the first to use satellite pictures and algorithms（计数法）to monitor species，but it was the first to reliably monitor animals moving through a complex environment ---that is，an environment that includes areas of open grassland， woodland and partial coverage. "This type of work has been done before with whales， but of course the ocean is all blue， so counting is a lot less challenging，" said Dr. Isupova. "As you can imagine， a complex environment makes it much harder to identify animals."
The researchers believe their work shows the potential of technology to support environmentalists to protect biodiversity and to slow the progress of the sixth mass extinction（灭绝）---the ongoing extinction event caused by human activity.
（1）Why did the scientists create the satellite cameras？ ____
A. To count animals in complex environment.
B. To increase the number of wild animals.
C. To train the skills of observing animals.
D. To drive the elephants out of forests in Africa.
（2）What can we learn about the new surveying technique？ ____
A. It's individual.
B. It's complex.
C. It's dangerous.
D. It's accurate.
（3）What is the condition of African elephants？ ____
A. They are rapidly increasing.
B. They are in diversity.
C. They are rapidly reducing.
D. They are in balance.
（4）What would be the best title for this passage？ ____
A. Making the Satellite Worldview 3 for Biodiversity.
B. Using Satellite to Monitor Endangered Species.
C. Supporting Hunting with new Technology.
D. Introducing Dr. Olga Isupova at the University of Bath.
For this research，the satellite Worldview 3 used high-quality pictures to monitor African elephants moving through forests and grasslands. The automated（自动化）system detected animals with the same accuracy as humans are able to achieve. The new surveying technique，created by Dr. Olga Isupova at the University of Bath in the UK with some other scientists，allows vast areas of land to be scanned in a matter of minutes，offering a much-needed alternative to human observers counting individual animals from low-flying airplanes. As it sweeps across the land，a satellite can collect over 5，000 km2 of pictures every few minutes，avoiding double counting. Where necessary， the process can be repeated the next day.
The population of African elephants has nose-dived over the past century，mainly due to hunting illegally and habitat（栖息地） ruin. With only 40，000-50，000 elephants left in the wild，the species is classified as endangered.
"Accurate monitoring is essential if we're to save the species，" said Dr. Isupove. "We need to know where the animals are and how many there are." Satellite monitoring avoids disturbing animals during date collection and ensures humans are not hurt in the counting process. It also makes it simpler to count animals moving from country to country， as satellites can orbit the planet without regard for border controls or conflict.
This study was not the first to use satellite pictures and algorithms（计数法）to monitor species，but it was the first to reliably monitor animals moving through a complex environment ---that is，an environment that includes areas of open grassland， woodland and partial coverage. "This type of work has been done before with whales， but of course the ocean is all blue， so counting is a lot less challenging，" said Dr. Isupova. "As you can imagine， a complex environment makes it much harder to identify animals."
The researchers believe their work shows the potential of technology to support environmentalists to protect biodiversity and to slow the progress of the sixth mass extinction（灭绝）---the ongoing extinction event caused by human activity.
（1）Why did the scientists create the satellite cameras？ ____
A. To count animals in complex environment.
B. To increase the number of wild animals.
C. To train the skills of observing animals.
D. To drive the elephants out of forests in Africa.
（2）What can we learn about the new surveying technique？ ____
A. It's individual.
B. It's complex.
C. It's dangerous.
D. It's accurate.
（3）What is the condition of African elephants？ ____
A. They are rapidly increasing.
B. They are in diversity.
C. They are rapidly reducing.
D. They are in balance.
（4）What would be the best title for this passage？ ____
A. Making the Satellite Worldview 3 for Biodiversity.
B. Using Satellite to Monitor Endangered Species.
C. Supporting Hunting with new Technology.
D. Introducing Dr. Olga Isupova at the University of Bath.
题目解答
答案
（1）A.细节理解题。 根据原文第一段"Scientists have successfully used satellite cameras to count animals in complex geographical environments，taking environmentalists an important step forward in monitoring populations of endangered species.科学家们已经成功地使用卫星摄像机来统计在复杂地理环境中的动物数量，这使环保主义者在监测濒危物种数量方面向前迈出了重要一步。"可知目的是为了检测动物的数量，A选项"To count animals in complex environment.计算复杂环境中的动物数量符合题意。 故选A.
（2）D.细节理解题。 根据原文第二段"The automated（自动化）system detected animals with the same accuracy as humans are able to achieve. 自动化系统检测到动物与人类能够达到相同的精度。"可知精确度很高。A.It's individual独立的；B. It's complex.复杂的；C.It's dangerous危险的；D. It's accurate精确的。故选D.
（3）C.细节理解题。 根据原文第三段" The population of African elephants has nose-dived over the past century，mainly due to hunting illegally and habitat（栖息地） ruin. With only 40，000-50，000 elephants left in the wild，the species is classified as endangered.非洲象的人口在过去的一个世纪里狂跌，主要是由于非法捕猎和栖息地的毁灭。野生大象仅存4万到5万头，该物种被列为濒危物种。"可知C选项"They are rapidly reducing它们大量减少"为正确答案。 故选C.
（4）B.标题判断题。通读全文可知文章旨在介绍卫星记录动物数量的方法，其准确度很高，能被用来检测濒临物种。B选项"Using Satellite to Monitor Endangered Species.使用卫星监测濒危物种。" 故选B.
（2）D.细节理解题。 根据原文第二段"The automated（自动化）system detected animals with the same accuracy as humans are able to achieve. 自动化系统检测到动物与人类能够达到相同的精度。"可知精确度很高。A.It's individual独立的；B. It's complex.复杂的；C.It's dangerous危险的；D. It's accurate精确的。故选D.
（3）C.细节理解题。 根据原文第三段" The population of African elephants has nose-dived over the past century，mainly due to hunting illegally and habitat（栖息地） ruin. With only 40，000-50，000 elephants left in the wild，the species is classified as endangered.非洲象的人口在过去的一个世纪里狂跌，主要是由于非法捕猎和栖息地的毁灭。野生大象仅存4万到5万头，该物种被列为濒危物种。"可知C选项"They are rapidly reducing它们大量减少"为正确答案。 故选C.
（4）B.标题判断题。通读全文可知文章旨在介绍卫星记录动物数量的方法，其准确度很高，能被用来检测濒临物种。B选项"Using Satellite to Monitor Endangered Species.使用卫星监测濒危物种。" 故选B.