题型:阅读选择 题类: 难易度:普通
浙江省杭州市华东师范大学附属杭州学校2024-2024学年九年级上学期期中学习力评估试英语试卷
① Is it common to see grass on the way to school every day? Is grass so common that you probably don't even notice it? Do you take the grass for granted? Do you know that there is also some special grass that grows on the ocean floor? The Seagrass, an underwater plant that grows on the ocean floor, is not only very important for sea life but also helps prevent global warming. However, scientists and researchers 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.
② Seagrass meadows are home to 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 for people to find. But sharks can dive deep into the water and get to the areas people cannot reach.
③ After noticing tiger sharks swimming through seagrass off the Bahamas, an American scientist worked with a seagrass expert, trying to map the locations of those hard-to-find plants. The researchers fitted seven tiger sharks with cameras. Since tiger sharks swim in groups, they placed tracking tags(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.
④ The researchers found more seagrass near the Bahamas than they expected - - - in fact, they believe that there is more seagrass(41%) than anywhere else on Earth. Researchers and scientists were very happy about this finding. However, more research is needed to discover the true size of the seagrass meadow.
⑤ In order to study about the underwater world, scientists often depend on divers and boats, 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.
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