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Near the Horqin Sandy Land in Inner Mongolia, lives a 14-year-old junior high school student named Jia Mingxuan. With careful observation and strong will, he invented an automatic（自动的） watering device for trees in dry areas. He even won the gold medal in the youth group at the International Trade Fair for Ideas, Inventions and New Products in Nuremberg, Germany, one of the world’s top three invention exhibitions. His simple but useful invention offers a good way to save water in the desert.
Jia Mingxuan’s hometown was once covered with sand. The weather is dry all year round with little rainfall. Many young trees died for lack of（缺少） water. The scene made him very sad. He often helped his family plant trees to fight the desert. Seeing young trees dry up, he decided to find a way to help them survive.
He found people watered trees by hand, wasting plenty of time and water. Also, water disappears quickly on dry sandy land. So he planned to create a device to collect natural water and water trees automatically, saving both labour and water.
At first, ▲. He read science books, turned to teachers and parents for advice, and did lots of tests. He failed many times for bad materials and impractical（不切实际的） designs, but he never gave up. He kept correcting mistakes and improving his invention.
After months of hard work, he succeeded. The device can collect rainwater and dew（露水）, store water and feed it slowly to tree roots. It helps trees get steady water, saves plenty of water, and costs little to make.
Jia Mingxuan’s creation impressed people at the international fair and won him great honour. His story tells us creativity lies in careful observation and continuous effort. If we care about life and keep trying, we can make our world better.
（
A. Because he wanted to win a big prize.
B. Because he wanted to protect the trees.
C. Because his parents asked him to do so.
D. Because he was interested in watering trees.
（
A. Jia Mingxuan asked his friends for help.
B. Jia Mingxuan was afraid to be laughed at.
C. Jia Mingxuan knew little about making inventions.
D. Jia Mingxuan lost interest in inventing new machines.
（
A. We should help each other.
B. We should work hard to win prizes.
C. We should always help our parents at home.
D. We should observe carefully and keep trying.
（
A. To call on people to protect trees and save water.
B. To introduce a young inventor and his invention.
C. To tell people the importance of inventing things.
D. To give suggestions on protecting the environment.
Near the Horqin Sandy Land in Inner Mongolia, lives a 14-year-old junior high school student named Jia Mingxuan. With careful observation and strong will, he invented an automatic（自动的） watering device for trees in dry areas. He even won the gold medal in the youth group at the International Trade Fair for Ideas, Inventions and New Products in Nuremberg, Germany, one of the world’s top three invention exhibitions. His simple but useful invention offers a good way to save water in the desert.
Jia Mingxuan’s hometown was once covered with sand. The weather is dry all year round with little rainfall. Many young trees died for lack of（缺少） water. The scene made him very sad. He often helped his family plant trees to fight the desert. Seeing young trees dry up, he decided to find a way to help them survive.
He found people watered trees by hand, wasting plenty of time and water. Also, water disappears quickly on dry sandy land. So he planned to create a device to collect natural water and water trees automatically, saving both labour and water.
At first, ▲. He read science books, turned to teachers and parents for advice, and did lots of tests. He failed many times for bad materials and impractical（不切实际的） designs, but he never gave up. He kept correcting mistakes and improving his invention.
After months of hard work, he succeeded. The device can collect rainwater and dew（露水）, store water and feed it slowly to tree roots. It helps trees get steady water, saves plenty of water, and costs little to make.
Jia Mingxuan’s creation impressed people at the international fair and won him great honour. His story tells us creativity lies in careful observation and continuous effort. If we care about life and keep trying, we can make our world better.
（
B
）19. Why did Jia Mingxuan want to invent the device at first?A. Because he wanted to win a big prize.
B. Because he wanted to protect the trees.
C. Because his parents asked him to do so.
D. Because he was interested in watering trees.
（
C
）20. Which can be put in “▲”?A. Jia Mingxuan asked his friends for help.
B. Jia Mingxuan was afraid to be laughed at.
C. Jia Mingxuan knew little about making inventions.
D. Jia Mingxuan lost interest in inventing new machines.
（
D
）21. What can we learn from Jia Mingxuan?A. We should help each other.
B. We should work hard to win prizes.
C. We should always help our parents at home.
D. We should observe carefully and keep trying.
（
B
）22. What is the purpose of the passage?A. To call on people to protect trees and save water.
B. To introduce a young inventor and his invention.
C. To tell people the importance of inventing things.
D. To give suggestions on protecting the environment.
答案
19. B 20. C 21. D 22. B
解析
【分析】本题为英语阅读理解题，需通读全文，定位各问题对应的原文段落，结合选项逐一分析：19题定位发明初衷的相关内容；20题需结合空格后描述的行为推断初始状态；21题定位文章最后一段的感悟；22题需梳理全文核心内容判断写作目的。
【解析】19题：根据第二段内容，贾明轩家乡干旱少雨，许多小树因缺水死亡，他帮家人种树时看到小树干枯，决定找方法帮助树木存活，因此发明装置的初衷是保护树木，对应选项B。20题：空格后提到贾明轩读科学书籍、向师长家长咨询、做大量测试，说明他一开始对发明制作了解不多，对应选项C。21题：根据最后一段“His story tells us creativity lies in careful observation and continuous effort”，可知我们能学到要仔细观察并坚持尝试，对应选项D。22题：全文围绕14岁学生贾明轩及其发明的自动浇水装置展开，介绍了他发明的原因、过程和成果，因此写作目的是介绍这位年轻发明者和他的发明，对应选项B。
【答案】19.B 20.C 21.D 22.B
【知识点】英语阅读理解、细节理解题、主旨大意题
【点评】本题是一篇介绍年轻发明家及其发明的英语阅读材料，题目涵盖细节理解、句子还原、主旨大意等常见题型，考查学生的信息定位和主旨理解能力，整体难度适中。
【难度系数】0.6
【解析】19题：根据第二段内容，贾明轩家乡干旱少雨，许多小树因缺水死亡，他帮家人种树时看到小树干枯，决定找方法帮助树木存活，因此发明装置的初衷是保护树木，对应选项B。20题：空格后提到贾明轩读科学书籍、向师长家长咨询、做大量测试，说明他一开始对发明制作了解不多，对应选项C。21题：根据最后一段“His story tells us creativity lies in careful observation and continuous effort”，可知我们能学到要仔细观察并坚持尝试，对应选项D。22题：全文围绕14岁学生贾明轩及其发明的自动浇水装置展开，介绍了他发明的原因、过程和成果，因此写作目的是介绍这位年轻发明者和他的发明，对应选项B。
【答案】19.B 20.C 21.D 22.B
【知识点】英语阅读理解、细节理解题、主旨大意题
【点评】本题是一篇介绍年轻发明家及其发明的英语阅读材料，题目涵盖细节理解、句子还原、主旨大意等常见题型，考查学生的信息定位和主旨理解能力，整体难度适中。
【难度系数】0.6
