Question: Using the examples from the lecture, explain the professor's main point about how camouflage serves dual purposes in marine animals.
🎧 听力讲座
Today we're going to talk about how animals use camouflage not just to hide from predators, but also to communicate with each other. One fascinating example is the cuttlefish. These creatures can rapidly change their skin color and texture to blend into their surroundings, but they also use this ability to send signals. For instance, when a male cuttlefish wants to court a female, it will display a pulsating pattern of stripes on one side of its body, while keeping the other side camouflaged to avoid attracting predators. This way, it can attract a mate without becoming an easy target. Another example is the peacock mantis shrimp. These shrimp use bright, colorful spots on their bodies to warn rivals of their aggressive nature. When two mantis shrimps meet, they display these vivid colors to intimidate each other, often avoiding a physical fight. So, you see, camouflage in these animals is not just about hiding; it's a sophisticated tool for social interaction as well.
📝 参考答案
托福口语 Task 4 评分标准
内容准确性(Content Accuracy):是否准确复述教授的主要观点
信息完整性(Information Completeness):讲座中的例子和关键细节是否完整
语言运用(Language Use):语法、词汇、表达准确性
表达(Delivery):流利度和清晰度
总分30分,原始分0-4分,最终换算为30分制。
答题技巧
听讲座时快速记笔记,抓住主要观点和两个例子
用20秒准备时间组织回答结构
回答时先点明教授的主要观点,再用例子解释
使用模板句式:"The professor explains... For example..."
控制在60秒内完成回答
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