Question: Using the examples from the lecture, explain the professor's main point about how mimicry helps harmless species survive.
🎧 听力讲座
Today we're going to talk about animal behavior, specifically about how some animals use a clever strategy called 'mimicry' to survive. Now, mimicry isn't just about looking like another animal—it can also be about acting like one, especially to avoid being eaten. One common form is when a harmless species imitates the appearance or behavior of a dangerous one. Take the viceroy butterfly, for example. It looks almost identical to the monarch butterfly, which birds avoid because monarchs taste terrible. By looking like the monarch, the viceroy is less likely to be attacked, even though it's perfectly tasty itself. Another example is the harmless milk snake. It mimics the deadly coral snake with its red, yellow, and black banding. Because predators have learned to avoid coral snakes, they also avoid milk snakes, giving the milk snake a survival advantage. So, in both cases, the key is that mimicry helps harmless species trick predators into thinking they're dangerous, reducing their risk of being eaten.
📝 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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