TOEFL Speaking Task 3 Sample: Explain the concept of masking and how it affects orca whales.

1.子项得分 Delivery: 2 Language Use: 2 Topic Development: 2

2.预估分数

15. 3.表达

从表达方面来看，发言者的语速较快，有时会出现不必要的停顿。建议发言者注意控制语速，保持稳定的节奏，并减少不必要的停顿。此外，发言者在发音方面也有一些错误，需要加强发音练习。

4.话题发展 从话题发展方面来看，发言者对于掩蔽现象和适用于虎鲸的例子进行了解释，但是在组织结构和逻辑上还有待提高。建议发言者在回答问题时更加注重逻辑性和条理性，确保观点之间有清晰的联系，并提供充分的支持或例证。

5.语言使用

Original Answer: When environmental sounds louder than the sound made by the animals, it will result in masking. In this lecture, the professor used the example of the egg whales. Egg whales, it largely depends on sound because it has a ventral system called ecosystem that to send off the sound and return the series of clicking sound so that they can lead them to the direction of the food location. While this experiment made by the scientists that they used the type of the environmental noise to determine whether or not they are going to change the probability of survival turns out that the effect is showing that the effect is 20% of the sound and it reduces the probability of survival.

Corrected Answer: When environmental sounds are louder than those made by animals, it results in masking. In this lecture, the professor used the example of orca whales. Orca whales largely depend on sound because they have a unique system called echolocation to send out and receive a series of clicking sounds, which helps them determine the direction of food sources. In an experiment conducted by scientists, they used environmental noise to determine whether it would change the whales' chances of survival. The results showed that a 20% increase in noise reduced their chances of survival. (修改了一些词汇和语法错误，使句子更自然流畅。例如，将“egg whales”改为“orca whales”，将“ventral system called ecosystem”改为“unique system called echolocation”等。)

Revised Answer (140 words):

When environmental sounds are louder than those made by animals, it results in a phenomenon called masking. In a biology lecture, the professor discussed an example involving orca whales. These whales largely depend on sound for survival as they use a unique system called echolocation to send out and receive a series of clicking sounds. This helps them determine the direction of food sources in their environment. Scientists conducted an experiment to study the impact of environmental noise on the whales' chances of survival. They focused on noise from boats in the whales' habitat and observed how it affected their behavior. The results showed that a 20% increase in noise from boats reduced the whales' chances of survival, as it interfered with their echolocation system and limited their ability to gather information about food sources in their surroundings.

6.思维导图

• Masking

  • Environmental sounds
  • Animal sounds

• Orca whales

  • Echolocation
    • Clicking sounds
    • Food sources

• Experiment

  • Environmental noise
  • Boat noise
  • Impact on survival

7.关键词