**Day177 练习内容**（TPO43-L2）

**What is the main purpose of the lecture?**

A. To explain a mechanism behind the ability to approximate numbers

B. To explore the connection between ability in symbolic mathematics and the ability to approximate numbers

C. To show the importance of new research into the ability to solve complex mathematical problems

D. To demonstrate that children, adults, and animals have a similar ability to approximate numbers

**Why does the professor stress that the dots in the experiment flashed on the computer screen for only a fraction of a second?**

A. To emphasize that humans’ ANS ability is more developed than that of animals

B. To point out that it was not possible to complete the task using formal mathematics

C. To show a contrast between the dot experiment and the color-naming experiment

D. To explain, in part, how subjects were chosen for the experiment

**What did researchers observe in the study of fourteen-year-old children?**

A. The children with strong ANS skills also scored well on color-naming tests

B. The children were more likely to make mistakes when there were small numbers of blue and yellow dots

C. The ANS skills of the children had improved over time.

D. There were large differences in the ANS skills of the children tested.

**练习完成后发送听力笔记、对笔记的回顾（标出看不懂的地方）、题目答案打卡**