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C
Seagrass, an underwater plant that grows on the ocean floor, is very important for sea life. It also helps prevent global warming by storing carbon, a harmful gas. However, scientists don’t know exactly how much seagrass is at the bottom of the ocean. With the help of tiger sharks, a team of researchers has discovered the world’s largest seagrass meadow (grassland) on the seafloor near the Bahamas.
Seagrass meadows are home to many different kinds of fish, shellfish and so on. Large sea animals, such as sharks, also spend a lot of time there looking for food. Seagrass can grow in very deep and dark waters, making it difficult to find. But sharks can dive deep into the water and get to the areas people cannot reach.
After noticing tiger sharks swimming through seagrass off the Bahamas, an American scientist worked with a seagrass expert, trying to map the locations of the plants. The researchers fitted seven tiger sharks with cameras. Since tiger sharks swim in groups, they placed satellite tracking tags(卫星跟踪器) on eight other sharks to find out exactly where the animals swam. They collected hours of videos of the tiger sharks swimming through seagrass.
The researchers found more seagrass growing near the Bahamas than they expected—in fact, they believe that there is more seagrass there than anywhere else on earth. The new finding increased the total amount of seagrass known to exist by 41%. However, more research is needed to discover the true size of the seagrass meadow.
Scientists often depend on findings from divers and boats to study about the underwater world, but this team found that working with animals improved their understanding. They are now placing cameras on sea turtles to study seagrass in the Red Sea. Hopefully, more mysteries about seagrass will be solved.
(
A. Seagrass is too small to be seen.
B. It grows in very deep dark areas.
C. It’s difficult to reach the bottom of sea.
D. Tiger sharks almost eat it all up.
(
A. The reason for the research.
B. The method to do the research.
C. The discovery of the research.
D. The scientists of the research.
(
A. By hiring more divers and boats.
B. By using better cameras.
C. By having discussions with experts.
D. By working with animals.
(
A. show a special project on global warming
B. express the features of some big sea animals
C. share a new way of doing undersea research
D. tell the importance of seagrass in big oceans
Seagrass, an underwater plant that grows on the ocean floor, is very important for sea life. It also helps prevent global warming by storing carbon, a harmful gas. However, scientists don’t know exactly how much seagrass is at the bottom of the ocean. With the help of tiger sharks, a team of researchers has discovered the world’s largest seagrass meadow (grassland) on the seafloor near the Bahamas.
Seagrass meadows are home to many different kinds of fish, shellfish and so on. Large sea animals, such as sharks, also spend a lot of time there looking for food. Seagrass can grow in very deep and dark waters, making it difficult to find. But sharks can dive deep into the water and get to the areas people cannot reach.
After noticing tiger sharks swimming through seagrass off the Bahamas, an American scientist worked with a seagrass expert, trying to map the locations of the plants. The researchers fitted seven tiger sharks with cameras. Since tiger sharks swim in groups, they placed satellite tracking tags(卫星跟踪器) on eight other sharks to find out exactly where the animals swam. They collected hours of videos of the tiger sharks swimming through seagrass.
The researchers found more seagrass growing near the Bahamas than they expected—in fact, they believe that there is more seagrass there than anywhere else on earth. The new finding increased the total amount of seagrass known to exist by 41%. However, more research is needed to discover the true size of the seagrass meadow.
Scientists often depend on findings from divers and boats to study about the underwater world, but this team found that working with animals improved their understanding. They are now placing cameras on sea turtles to study seagrass in the Red Sea. Hopefully, more mysteries about seagrass will be solved.
(
B
) 8. Why is seagrass difficult to find underwater?A. Seagrass is too small to be seen.
B. It grows in very deep dark areas.
C. It’s difficult to reach the bottom of sea.
D. Tiger sharks almost eat it all up.
(
B
) 9. What is paragraph 3 mainly about?A. The reason for the research.
B. The method to do the research.
C. The discovery of the research.
D. The scientists of the research.
(
D
)10. How will scientists work out mysteries about seagrass?A. By hiring more divers and boats.
B. By using better cameras.
C. By having discussions with experts.
D. By working with animals.
(
C
)11. The article is written to .A. show a special project on global warming
B. express the features of some big sea animals
C. share a new way of doing undersea research
D. tell the importance of seagrass in big oceans
答案
8. B 9. B 10. D 11. C
解析
【分析】
本题为英语阅读理解题，包含细节理解、段落主旨、文章主旨类题型。解题思路为：1. 第8题定位原文中关于海草难被发现的原因描述，匹配对应选项；2. 第9题梳理第三段核心内容，判断其属于研究的哪一维度；3. 第10题定位原文中科学家研究海草的方式，匹配选项；4. 第11题梳理全文核心内容，明确作者写作目的。
【解析】
8. 定位原文第二段“Seagrass can grow in very deep and dark waters, making it difficult to find.”，可知海草难被发现的原因是生长在深暗水域，对应选项B。
9. 第三段主要讲述给7只虎鲨装相机、给8只虎鲨装卫星跟踪器、收集虎鲨游动视频等具体研究操作，核心是介绍研究方法，对应选项B。
10. 定位原文最后一段“this team found that working with animals improved their understanding. They are now placing cameras on sea turtles to study seagrass...”，可知科学家通过与动物合作研究海草，对应选项D。
11. 全文围绕“利用虎鲨等动物开展海底海草研究”展开，核心是分享一种新的海底研究方式，对应选项C。
【答案】
8. B 9. B 10. D 11. C
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本题考查英语阅读理解的核心能力，涵盖细节定位、段落概括、主旨提炼等考点，要求学生具备快速抓取原文关键信息的能力，整体难度适中。
【难度系数】
0.6
本题为英语阅读理解题，包含细节理解、段落主旨、文章主旨类题型。解题思路为：1. 第8题定位原文中关于海草难被发现的原因描述，匹配对应选项；2. 第9题梳理第三段核心内容，判断其属于研究的哪一维度；3. 第10题定位原文中科学家研究海草的方式，匹配选项；4. 第11题梳理全文核心内容，明确作者写作目的。
【解析】
8. 定位原文第二段“Seagrass can grow in very deep and dark waters, making it difficult to find.”，可知海草难被发现的原因是生长在深暗水域，对应选项B。
9. 第三段主要讲述给7只虎鲨装相机、给8只虎鲨装卫星跟踪器、收集虎鲨游动视频等具体研究操作，核心是介绍研究方法，对应选项B。
10. 定位原文最后一段“this team found that working with animals improved their understanding. They are now placing cameras on sea turtles to study seagrass...”，可知科学家通过与动物合作研究海草，对应选项D。
11. 全文围绕“利用虎鲨等动物开展海底海草研究”展开，核心是分享一种新的海底研究方式，对应选项C。
【答案】
8. B 9. B 10. D 11. C
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本题考查英语阅读理解的核心能力，涵盖细节定位、段落概括、主旨提炼等考点，要求学生具备快速抓取原文关键信息的能力，整体难度适中。
【难度系数】
0.6
