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 dioxide, a kind of harmful gas. However, scientists don’t know exactly how much seagrass there 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(专家), 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 gathered 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 believed that there was more seagrass there than anywhere else on the earth. The new finding increased the total number 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(潜水员) and boats to study 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. Because seagrass is too small to be seen.
B. Because it grows in very deep and dark areas.
C. Because it’s difficult to reach the bottom of the sea.
D. Because 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 seagrass experts.
D. By working with animals.
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 dioxide, a kind of harmful gas. However, scientists don’t know exactly how much seagrass there 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(专家), 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 gathered 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 believed that there was more seagrass there than anywhere else on the earth. The new finding increased the total number 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(潜水员) and boats to study 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 under the water?A. Because seagrass is too small to be seen.
B. Because it grows in very deep and dark areas.
C. Because it’s difficult to reach the bottom of the sea.
D. Because 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 the mysteries about seagrass?A. By hiring more divers and boats.
B. By using better cameras.
C. By having discussions with seagrass experts.
D. By working with animals.
答案：8. B 【点拨】根据“Seagrass can grow in very deep and dark waters，making it difficult to find.”可知，海草生长在非常深和黑暗的水域，很难找到。故选 B。
9. B 【点拨】根据第三段内容可知，本段主要讲了研究的方法。故选 B。
10. D 【点拨】根据“Scientists often depend on findings from divers(潜水员) and boats to study the underwater world，but this team found that working with animals improved their understanding.”可知，科学家通过和动物合作来解开海草之谜。故选 D。
9. B 【点拨】根据第三段内容可知，本段主要讲了研究的方法。故选 B。
10. D 【点拨】根据“Scientists often depend on findings from divers(潜水员) and boats to study the underwater world，but this team found that working with animals improved their understanding.”可知，科学家通过和动物合作来解开海草之谜。故选 D。
解析：
翻译:
### 文章翻译
海草是一种生长在海底的水下植物，对海洋生物非常重要。它还能通过储存二氧化碳（一种有害气体）来帮助阻止全球变暖。然而，科学家们并不确切知道海底有多少海草。在虎鲨的帮助下，一组研究人员在巴哈马群岛附近的海底发现了世界上最大的海草草甸（草地）。
海草草甸是许多不同种类的鱼、贝类等生物的家园。像鲨鱼这样的大型海洋动物也会在那里花费大量时间觅食。海草能在非常深且黑暗的水域生长，这使得它很难被发现。但鲨鱼可以潜入深水，到达人类无法到达的区域。
一位美国科学家注意到虎鲨在巴哈马群岛附近的海草中游动后，与一位海草专家合作，试图绘制这些植物的位置图。研究人员给七条虎鲨安装了摄像头。由于虎鲨成群游动，他们在另外八条鲨鱼身上放置了卫星跟踪器，以确切了解这些动物的游动位置。他们收集了数小时虎鲨在海草中游动的视频。
研究人员发现巴哈马群岛附近生长的海草比他们预期的要多——事实上，他们认为那里的海草比地球上其他任何地方都多。这一新发现使已知存在的海草总量增加了41%。然而，还需要更多的研究来确定海草草甸的真实面积。
科学家们通常依靠潜水员和船只的发现来研究水下世界，但这个团队发现与动物合作提高了他们的认知。他们现在正在给海龟安装摄像头，以研究红海的海草。希望更多关于海草的谜团将被解开。
### 题目翻译
( )8. 为什么海草在水下很难被发现？
A. 因为海草太小了，看不见。
B. 因为它生长在非常深且黑暗的区域。
C. 因为很难到达海底。
D. 因为虎鲨几乎把它都吃光了。
( )9. 第三段主要讲了什么？
A. 研究的原因。
B. 做研究的方法。
C. 研究的发现。
D. 研究的科学家。
( )10. 科学家们将如何解开关于海草的谜团？
A. 通过雇佣更多的潜水员和船只。
B. 通过使用更好的摄像头。
C. 通过与海草专家讨论。
D. 通过与动物合作。
### 文章翻译
海草是一种生长在海底的水下植物，对海洋生物非常重要。它还能通过储存二氧化碳（一种有害气体）来帮助阻止全球变暖。然而，科学家们并不确切知道海底有多少海草。在虎鲨的帮助下，一组研究人员在巴哈马群岛附近的海底发现了世界上最大的海草草甸（草地）。
海草草甸是许多不同种类的鱼、贝类等生物的家园。像鲨鱼这样的大型海洋动物也会在那里花费大量时间觅食。海草能在非常深且黑暗的水域生长，这使得它很难被发现。但鲨鱼可以潜入深水，到达人类无法到达的区域。
一位美国科学家注意到虎鲨在巴哈马群岛附近的海草中游动后，与一位海草专家合作，试图绘制这些植物的位置图。研究人员给七条虎鲨安装了摄像头。由于虎鲨成群游动，他们在另外八条鲨鱼身上放置了卫星跟踪器，以确切了解这些动物的游动位置。他们收集了数小时虎鲨在海草中游动的视频。
研究人员发现巴哈马群岛附近生长的海草比他们预期的要多——事实上，他们认为那里的海草比地球上其他任何地方都多。这一新发现使已知存在的海草总量增加了41%。然而，还需要更多的研究来确定海草草甸的真实面积。
科学家们通常依靠潜水员和船只的发现来研究水下世界，但这个团队发现与动物合作提高了他们的认知。他们现在正在给海龟安装摄像头，以研究红海的海草。希望更多关于海草的谜团将被解开。
### 题目翻译
( )8. 为什么海草在水下很难被发现？
A. 因为海草太小了，看不见。
B. 因为它生长在非常深且黑暗的区域。
C. 因为很难到达海底。
D. 因为虎鲨几乎把它都吃光了。
( )9. 第三段主要讲了什么？
A. 研究的原因。
B. 做研究的方法。
C. 研究的发现。
D. 研究的科学家。
( )10. 科学家们将如何解开关于海草的谜团？
A. 通过雇佣更多的潜水员和船只。
B. 通过使用更好的摄像头。
C. 通过与海草专家讨论。
D. 通过与动物合作。