①Xu Jian is a visually impaired(视力受损的) woman in Shenzhen, Guangdong. For the past seven years, Xu's guide dog Daimeng has been at her side at work and for everyday activities.
②Xu got the dog from the China Guide Dog Training Center in Dalian, Liaoning Province, the first guide dog training center on the Chinese mainland. Wang Jingyu, a professor(教授) at Dalian Medical University, set it up in 2006. Over the years, the center has trained about 400 guide dogs, with more than 350 now serving in 27 provinces and cities across China.
③According to Wang Xin, a trainer in the center, 90 percent of the center's guide dogs are Labradors, which are kind and smart. Once trainers find good guide baby dogs, the dogs need to take personality tests. A good guide dog should not be too curious(好奇的), excitable or shy as these personalities could cause problems during work, according to Wang.
④One volunteer, surnamed Sun, has raised four baby dogs since 2019. "Raising guide dogs is quite different from raising pet dogs," said Sun. She strictly follows the center's guidelines for their care. She also guides them along raised paths made for visually impaired people so they can feel them and know they are safe.
⑤"However, even if the dogs pass all tests, they could still be turned down if they don't enjoy the role of a guide dog," Wang added. Typically, guide dogs serve for six to ten years. Those who are turned down or are too old are usually taken in as pets by their trainers, those who raised them, or volunteers.
()49. In Paragraph 2, what can we know about the China Guide Dog Training Center in Dalian?
A. Xu Jian set it up in 2006.
B. Its services cover many areas.
C. It only trains homeless dogs.
D. It's the largest guide dog training center in China.
()50. What can we learn about a guide dog from the passage?
A. A guide dog needs to enjoy its role as a guide dog.
B. A good guide dog should be excitable during work.
C. It takes a trainer six to ten years to train a guide dog.
D. The trainer should take personality tests with a guide dog.
()51. What will a guide dog become when it is old?
A. A police helper.
B. A volunteer.
C. A pet.
D. A trainer.
()52. What is the best title for the passage?
A. Guiding the Way
B. Enjoying Hard Work
C. Exploring Nature
D. Living a Simple Life

49. B 【解析】细节理解题。根据第②段中“Over the years, the center has trained about 400 guide dogs, with more than 350 now serving in 27 provinces and cities across China.”可知,该中心的服务覆盖了许多地区,故选 B。
50. A 【解析】细节理解题。根据最后一段中“However, even if the dogs pass all tests, they could still be turned down if they don't enjoy the role of a guide dog”可知,导盲犬需要喜欢自己的角色,故选 A。
51. C 【解析】细节理解题。根据最后一段中“Those who are turned down or are too old are usually taken in as pets by their trainers, those who raised them, or volunteers.”可知,年老的导盲犬通常会成为宠物,故选 C。
52. A 【解析】标题归纳题。根据全文内容可知,本文主要讲述了导盲犬的训练和服务,以及它们如何帮助视力受损的人,因此,A 项作为标题符合文章主旨,故选 A。

【分析】
这是一篇英语阅读理解题，包含4道小题，其中前3道为细节理解题，第4道为标题归纳题。解题思路为：1. 针对细节理解题，需根据题干关键词定位原文对应段落，提取关键信息，逐一对比选项，排除与原文不符的错误选项，选出正确答案；2. 针对标题归纳题，需梳理全文主旨，提炼核心内容，选择最贴合文章主题的标题。
【解析】
49. 细节理解题。根据第②段中“Over the years, the center has trained about 400 guide dogs, with more than 350 now serving in 27 provinces and cities across China.”可知，该中心的服务覆盖了中国多个省市，对应B选项。A选项错误，是王靖宇教授2006年设立该中心，不是徐建；C选项原文未提及只训练流浪狗；D选项原文未提是最大的，故选B。
50. 细节理解题。根据最后一段中“However, even if the dogs pass all tests, they could still be turned down if they don't enjoy the role of a guide dog”可知，导盲犬需要喜欢自己作为导盲犬的角色，对应A选项。B选项错误，原文说好的导盲犬不应太兴奋；C选项错误，导盲犬服务年限是6-10年，不是训练时间；D选项错误，是幼犬需要做性格测试，不是和训练师一起，故选A。
51. 细节理解题。根据最后一段中“Those who are turned down or are too old are usually taken in as pets by their trainers, those who raised them, or volunteers.”可知，年老的导盲犬通常会被当作宠物，对应C选项，故选C。
52. 标题归纳题。全文围绕导盲犬的训练、服务及帮助视力受损人群展开，核心是导盲犬为视障人士引路，A项“Guiding the Way”贴合主旨，B、C、D均与文章核心无关，故选A。
【答案】
49.B 50.A 51.C 52.A
【知识点】
英语阅读理解（细节理解题）、英语阅读理解（标题归纳题）
【点评】
本题为英语阅读理解基础题型，侧重考查学生快速定位原文信息和归纳文章主旨的能力，内容贴近生活，难度适中，学生只要认真阅读原文并对应分析选项即可正确作答。
【难度系数】
0.7