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训练4 体裁: 说明文 主题: 动物保护 难度: ★★★★★ 建议用时: 8 min 正确率: /5
Red-crowned cranes are one of the rarest birds in the world. They mainly live in wetlands in China and other Asian countries. However, their habitats(栖息地) are getting smaller because of human activities like farming on wetlands and building houses. 1 Luckily, new technology(科技) is helping to protect these beautiful birds.
Scientists in Jiangsu Province have put small GPS trackers on 20 red-crowned cranes. 2 They are light and won't hurt the cranes. They can record the birds' flying routes, resting places, and feeding areas. The information is sent to computers, allowing scientists to learn more about the cranes' living habits. 3 For example, they found that the cranes travel over 1,000 kilometres every year to spend winter in warmer places.
Another technology used is drone monitoring. Drones can fly high over wetlands and take clear photos of the cranes without disturbing them or making them scared. This helps scientists count the number of cranes and check if they are healthy. 4 Local governments have also built more nature reserves to provide safe habitats for the cranes to live in.
Thanks to these efforts, the number of red-crowned cranes in China has increased from 1,000 to 1,600 in the past 10 years. 5 “Technology is a powerful tool for wildlife protection,” said a scientist. “We will keep on using it to save more endangered animals like red crowned cranes.”
A. This makes it hard for red-crowned cranes to find food and homes.
B. Many people like red-crowned cranes because of their beautiful feathers.
C. These small machines are very useful for studying the birds' lives.
D. Scientists also teach local people
w to protect cranes in daily life.
E. The increase shows that the protection work is really working.
F. They have got a lot of valuable information from the trackers.
G. Some cranes even start to live in the new nature reserves happily.
1.
2.
3.
4.
5.
Red-crowned cranes are one of the rarest birds in the world. They mainly live in wetlands in China and other Asian countries. However, their habitats(栖息地) are getting smaller because of human activities like farming on wetlands and building houses. 1 Luckily, new technology(科技) is helping to protect these beautiful birds.
Scientists in Jiangsu Province have put small GPS trackers on 20 red-crowned cranes. 2 They are light and won't hurt the cranes. They can record the birds' flying routes, resting places, and feeding areas. The information is sent to computers, allowing scientists to learn more about the cranes' living habits. 3 For example, they found that the cranes travel over 1,000 kilometres every year to spend winter in warmer places.
Another technology used is drone monitoring. Drones can fly high over wetlands and take clear photos of the cranes without disturbing them or making them scared. This helps scientists count the number of cranes and check if they are healthy. 4 Local governments have also built more nature reserves to provide safe habitats for the cranes to live in.
Thanks to these efforts, the number of red-crowned cranes in China has increased from 1,000 to 1,600 in the past 10 years. 5 “Technology is a powerful tool for wildlife protection,” said a scientist. “We will keep on using it to save more endangered animals like red crowned cranes.”
A. This makes it hard for red-crowned cranes to find food and homes.
B. Many people like red-crowned cranes because of their beautiful feathers.
C. These small machines are very useful for studying the birds' lives.
D. Scientists also teach local people
w to protect cranes in daily life.E. The increase shows that the protection work is really working.
F. They have got a lot of valuable information from the trackers.
G. Some cranes even start to live in the new nature reserves happily.
1.
A
2.
C
3.
F
4.
D
5.
E
答案
训练4 【语篇解读】本文是一篇说明文。文章介绍了丹顶鹤的生存现状，以及科学家通过GPS追踪器、无人机等科技手段，结合政府和民众的保护措施，帮助丹顶鹤数量回升的情况。
1. A 【解析】根据前文“However, their habitats are getting smaller because of human activities like farming on wetlands and building houses.”可知，由于人类活动（如填湿地造田、建房），它们的栖息地正在缩小。由此可知，空处需要说明此行为对丹顶鹤带来的负面影响。选项A“这让丹顶鹤很难找到食物和栖息地。”符合语境。故选A。
2. C 【解析】根据前文“Scientists in Jiangsu Province have put small GPS trackers on 20 red-crowned cranes.”和后文“They are light and won't hurt the cranes.”可知，安装小型追踪器后，空处需要说明这些设备的作用，引出后文对追踪器功能的介绍。选项C“这些小型设备对研究鸟类的生活非常有用。”符合语境。故选C。
3. F 【解析】根据前文“The information is sent to computers, allowing scientists to learn more about the cranes' living habits.”和后文“For example, they found that the cranes travel over 1,000 kilometres every year to spend winter in warmer places.”可知，前文提到追踪器会收集信息，后文用具体的例子展示了这些信息的内容，所以空处需要一个过渡句，说明科学家已经从追踪器中获得了有价值的信息，自然引出后面的例子。选项F“他们从追踪器中获得了许多有价值的信息。”符合语境。故选F。
4. D 【解析】根据前文“Drones can ... take clear photos of the cranes ... helps scientists count the number of cranes and check if they are healthy.”和后文“Local governments have also built more nature reserves to provide safe habitats for the cranes to live in.”可知，前文提到了科技手段，后文提到了政府举措，所以空处需要补充另一项保护行动，让内容更完整。选项D“科学家也要教当地人在日常生活中如何保护鹤。”符合语境。故选D。
5. E 【解析】根据前文“Thanks to these efforts, the number of red-crowned cranes in China has increased from 1,000 to 1,600 in the past 10 years.”可知，多亏了这些努力，丹顶鹤的数量在过去10年从1 000只增加到1 600只。空处需要总结说明数量增长与这些保护行为的关系。选项E“数量的增长表明保护工作确实有效。”符合语境。故选E。
1. A 【解析】根据前文“However, their habitats are getting smaller because of human activities like farming on wetlands and building houses.”可知，由于人类活动（如填湿地造田、建房），它们的栖息地正在缩小。由此可知，空处需要说明此行为对丹顶鹤带来的负面影响。选项A“这让丹顶鹤很难找到食物和栖息地。”符合语境。故选A。
2. C 【解析】根据前文“Scientists in Jiangsu Province have put small GPS trackers on 20 red-crowned cranes.”和后文“They are light and won't hurt the cranes.”可知，安装小型追踪器后，空处需要说明这些设备的作用，引出后文对追踪器功能的介绍。选项C“这些小型设备对研究鸟类的生活非常有用。”符合语境。故选C。
3. F 【解析】根据前文“The information is sent to computers, allowing scientists to learn more about the cranes' living habits.”和后文“For example, they found that the cranes travel over 1,000 kilometres every year to spend winter in warmer places.”可知，前文提到追踪器会收集信息，后文用具体的例子展示了这些信息的内容，所以空处需要一个过渡句，说明科学家已经从追踪器中获得了有价值的信息，自然引出后面的例子。选项F“他们从追踪器中获得了许多有价值的信息。”符合语境。故选F。
4. D 【解析】根据前文“Drones can ... take clear photos of the cranes ... helps scientists count the number of cranes and check if they are healthy.”和后文“Local governments have also built more nature reserves to provide safe habitats for the cranes to live in.”可知，前文提到了科技手段，后文提到了政府举措，所以空处需要补充另一项保护行动，让内容更完整。选项D“科学家也要教当地人在日常生活中如何保护鹤。”符合语境。故选D。
5. E 【解析】根据前文“Thanks to these efforts, the number of red-crowned cranes in China has increased from 1,000 to 1,600 in the past 10 years.”可知，多亏了这些努力，丹顶鹤的数量在过去10年从1 000只增加到1 600只。空处需要总结说明数量增长与这些保护行为的关系。选项E“数量的增长表明保护工作确实有效。”符合语境。故选E。
解析
【分析】
本题为英语七选五题型，需结合上下文的逻辑关系（如因果、指代、递进、总结等）解题。第1空前文说明丹顶鹤栖息地因人类活动缩小，需选栖息地缩小带来的负面影响；第2空前文提到GPS追踪器，后文介绍其优点，需选说明追踪器作用的选项；第3空前文提及追踪器收集信息，后文举例信息内容，需选过渡句说明获得了有价值的信息；第4空前文讲科技保护手段，后文讲政府建保护区，需选补充的保护措施；第5空前文讲丹顶鹤数量增长，需选总结保护效果的选项。
【解析】
1. 前文提到丹顶鹤栖息地因人类活动缩小，A选项“这让丹顶鹤很难找到食物和栖息地”是栖息地缩小带来的负面影响，符合语境，故选A。
2. 前文提到“small GPS trackers”，后文说明追踪器轻且不伤害鹤，C选项“这些小型设备对研究鸟类的生活非常有用”衔接前后，说明追踪器的作用，故选C。
3. 前文说追踪器收集的信息被发送到电脑，后文举例发现的迁徙情况，F选项“他们从追踪器中获得了许多有价值的信息”是过渡句，衔接前文的信息收集和后文的例子，故选F。
4. 前文讲无人机监测的科技手段，后文讲政府建保护区，D选项“科学家也要教当地人在日常生活中如何保护鹤”补充了另一项保护行动，使内容连贯，故选D。
5. 前文提到丹顶鹤数量从1000增至1600，E选项“数量的增长表明保护工作确实有效”总结了数量增长与保护措施的关系，符合语境，故选E。
【答案】1.A 2.C 3.F 4.D 5.E
【知识点】英语七选五、语篇衔接、动物保护阅读理解
【点评】本题围绕丹顶鹤保护展开，考查学生对语篇逻辑的理解与运用能力，需结合上下文内容匹配选项，注重语篇连贯性的把握，难度较高。
【难度系数】0.2
本题为英语七选五题型，需结合上下文的逻辑关系（如因果、指代、递进、总结等）解题。第1空前文说明丹顶鹤栖息地因人类活动缩小，需选栖息地缩小带来的负面影响；第2空前文提到GPS追踪器，后文介绍其优点，需选说明追踪器作用的选项；第3空前文提及追踪器收集信息，后文举例信息内容，需选过渡句说明获得了有价值的信息；第4空前文讲科技保护手段，后文讲政府建保护区，需选补充的保护措施；第5空前文讲丹顶鹤数量增长，需选总结保护效果的选项。
【解析】
1. 前文提到丹顶鹤栖息地因人类活动缩小，A选项“这让丹顶鹤很难找到食物和栖息地”是栖息地缩小带来的负面影响，符合语境，故选A。
2. 前文提到“small GPS trackers”，后文说明追踪器轻且不伤害鹤，C选项“这些小型设备对研究鸟类的生活非常有用”衔接前后，说明追踪器的作用，故选C。
3. 前文说追踪器收集的信息被发送到电脑，后文举例发现的迁徙情况，F选项“他们从追踪器中获得了许多有价值的信息”是过渡句，衔接前文的信息收集和后文的例子，故选F。
4. 前文讲无人机监测的科技手段，后文讲政府建保护区，D选项“科学家也要教当地人在日常生活中如何保护鹤”补充了另一项保护行动，使内容连贯，故选D。
5. 前文提到丹顶鹤数量从1000增至1600，E选项“数量的增长表明保护工作确实有效”总结了数量增长与保护措施的关系，符合语境，故选E。
【答案】1.A 2.C 3.F 4.D 5.E
【知识点】英语七选五、语篇衔接、动物保护阅读理解
【点评】本题围绕丹顶鹤保护展开，考查学生对语篇逻辑的理解与运用能力，需结合上下文内容匹配选项，注重语篇连贯性的把握，难度较高。
【难度系数】0.2
训练5 | 体裁：说明文 | 主题：科学技术 | 难度：★★★★★ | 建议用时：8 min | 正确率：/5
In the 2030s, NASA wants to land people on Mars(火星). 1 That's not such a long time, but do the astronauts have to keep awake(醒着的) and wait in those nine months? Can't they go into a hibernation-like state(类休眠状态) during the travel and wake up when they get to Mars?
A group of scientists have been testing to see if it might work. 2 It's a state when an animal stops moving and its body temperature and heart rate fall. Some animals, such as mice, naturally enter torpor(迟钝) when the weather is cold or food is short. Torpor is similar to hibernation.
Scientists wanted to find a way to make mice enter torpor. 3 When the team turned on the hats, the mice's body temperature and heart rate fell, just as they would during torpor. They kept the mice in the state for 24 hours. When the scientists turned off the hats, they recovered(恢复) completely within two hours.
4 Rats are larger than mice and they don't naturally enter torpor. During the test, the rats' body temperature also fell, although not as much as it did in the mice.
The results with the rats mean that scientists can try the test on animals that don't naturally enter torpor, including people. 5 After all, they need to make sure the test on people is safe.
A. It is hard to keep awake.
B. It's sometimes called the Red Planet.
C. The scientists then tried the test on rats.
D. They tested something called
porpor first.
E. The travel could take around nine months.
F. To do this, they made special hats for the mice.
G. But they still have a lot of work to do before testing on people.
1.
2.
3.
4.
5.
In the 2030s, NASA wants to land people on Mars(火星). 1 That's not such a long time, but do the astronauts have to keep awake(醒着的) and wait in those nine months? Can't they go into a hibernation-like state(类休眠状态) during the travel and wake up when they get to Mars?
A group of scientists have been testing to see if it might work. 2 It's a state when an animal stops moving and its body temperature and heart rate fall. Some animals, such as mice, naturally enter torpor(迟钝) when the weather is cold or food is short. Torpor is similar to hibernation.
Scientists wanted to find a way to make mice enter torpor. 3 When the team turned on the hats, the mice's body temperature and heart rate fell, just as they would during torpor. They kept the mice in the state for 24 hours. When the scientists turned off the hats, they recovered(恢复) completely within two hours.
4 Rats are larger than mice and they don't naturally enter torpor. During the test, the rats' body temperature also fell, although not as much as it did in the mice.
The results with the rats mean that scientists can try the test on animals that don't naturally enter torpor, including people. 5 After all, they need to make sure the test on people is safe.
A. It is hard to keep awake.
B. It's sometimes called the Red Planet.
C. The scientists then tried the test on rats.
D. They tested something called
porpor first.E. The travel could take around nine months.
F. To do this, they made special hats for the mice.
G. But they still have a lot of work to do before testing on people.
1.
2.
3.
4.
5.
答案
训练5 【语篇解读】本文是一篇说明文。文章主要介绍了科学家们在寻找让人类进入类休眠状态的方法。
1. E 【解析】根据下文“That's not such a long time, but do the astronauts have to keep awake and wait in those nine months?”可知此处应介绍旅程的时长；E项“这段旅程可能需要大约九个月的时间。”能启示下文。故选E。
易错点拨
本题易根据上文“NASA wants to land people on Mars”错选B项；B项进一步介绍了火星，能承接上文，但与下文内容不符。
2. D 【解析】根据下文“It's a state when an animal stops moving ... Torpor is similar to hibernation.”可知此处应介绍“迟钝”的状态；D项“torpor”是下文的原词复现。故选D。
3. F 【解析】根据上文“Scientists wanted to find a way to make mice enter torpor.”和下文“When the team turned on the hats ...”可知科学家们用特殊的帽子让老鼠进入“迟钝”的状态；F项“为此，他们为老鼠制作了特殊的帽子。”承上启下。故选F。
4. C 【解析】根据下文“Rats are larger than mice and they don't naturally enter torpor.”可知科学家们又在大老鼠身上测试；C项“rats”是下文的原词复现。故选C。
5. G 【解析】根据下文“After all, they need to make sure the test on people is safe.”可知科学家们要确保人体测试是安全的，因此要做很多工作；G项“但在对人体进行测试之前，他们还有很多工作要做。”能启示下文。故选G。
1. E 【解析】根据下文“That's not such a long time, but do the astronauts have to keep awake and wait in those nine months?”可知此处应介绍旅程的时长；E项“这段旅程可能需要大约九个月的时间。”能启示下文。故选E。
易错点拨
本题易根据上文“NASA wants to land people on Mars”错选B项；B项进一步介绍了火星，能承接上文，但与下文内容不符。
2. D 【解析】根据下文“It's a state when an animal stops moving ... Torpor is similar to hibernation.”可知此处应介绍“迟钝”的状态；D项“torpor”是下文的原词复现。故选D。
3. F 【解析】根据上文“Scientists wanted to find a way to make mice enter torpor.”和下文“When the team turned on the hats ...”可知科学家们用特殊的帽子让老鼠进入“迟钝”的状态；F项“为此，他们为老鼠制作了特殊的帽子。”承上启下。故选F。
4. C 【解析】根据下文“Rats are larger than mice and they don't naturally enter torpor.”可知科学家们又在大老鼠身上测试；C项“rats”是下文的原词复现。故选C。
5. G 【解析】根据下文“After all, they need to make sure the test on people is safe.”可知科学家们要确保人体测试是安全的，因此要做很多工作；G项“但在对人体进行测试之前，他们还有很多工作要做。”能启示下文。故选G。
解析
【分析】
解答本题需结合上下文语境，通过关键词复现、逻辑呼应等线索确定选项：第1空根据下文的“those nine months”找对应内容；第2空根据下文的“torpor”原词复现匹配；第3空根据下文的“the hats”找衔接内容；第4空根据下文的“Rats”原词复现匹配；第5空根据下文的“确保人体测试安全”找呼应内容。
【解析】
1. 第1空：下文提到“those nine months”，说明此处需介绍火星之旅的时长，E项“The travel could take around nine months.”符合语境，故选E。
2. 第2空：下文解释了“torpor”的状态，D项“They tested something called torpor first.”中“torpor”与下文原词复现，逻辑连贯，故选D。
3. 第3空：上文提到科学家想让老鼠进入torpor状态，下文提到“the hats”，F项“To do this, they made special hats for the mice.”承上启下，故选F。
4. 第4空：下文提到“Rats are larger than mice...”，C项“The scientists then tried the test on rats.”中“rats”与下文原词复现，符合语境，故选C。
5. 第5空：下文提到要确保人体测试安全，G项“But they still have a lot of work to do before testing on people.”与下文呼应，故选G。
【答案】
1.E 2.D 3.F 4.C 5.G
【知识点】
英语七选五、说明文阅读、词汇复现
【点评】
本题为科学主题的说明文七选五，侧重考查学生对上下文逻辑关系和关键词线索的把握，解题关键是找准原词复现、指代关系等线索，难度适中。
【难度系数】
0.4
解答本题需结合上下文语境，通过关键词复现、逻辑呼应等线索确定选项：第1空根据下文的“those nine months”找对应内容；第2空根据下文的“torpor”原词复现匹配；第3空根据下文的“the hats”找衔接内容；第4空根据下文的“Rats”原词复现匹配；第5空根据下文的“确保人体测试安全”找呼应内容。
【解析】
1. 第1空：下文提到“those nine months”，说明此处需介绍火星之旅的时长，E项“The travel could take around nine months.”符合语境，故选E。
2. 第2空：下文解释了“torpor”的状态，D项“They tested something called torpor first.”中“torpor”与下文原词复现，逻辑连贯，故选D。
3. 第3空：上文提到科学家想让老鼠进入torpor状态，下文提到“the hats”，F项“To do this, they made special hats for the mice.”承上启下，故选F。
4. 第4空：下文提到“Rats are larger than mice...”，C项“The scientists then tried the test on rats.”中“rats”与下文原词复现，符合语境，故选C。
5. 第5空：下文提到要确保人体测试安全，G项“But they still have a lot of work to do before testing on people.”与下文呼应，故选G。
【答案】
1.E 2.D 3.F 4.C 5.G
【知识点】
英语七选五、说明文阅读、词汇复现
【点评】
本题为科学主题的说明文七选五，侧重考查学生对上下文逻辑关系和关键词线索的把握，解题关键是找准原词复现、指代关系等线索，难度适中。
【难度系数】
0.4
