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Question 2:

When did you start to learn about science?

Useful Phrases:

basics n. 基础，基本原则

the laws of nature 自然规律

challenging adj. 有挑战性的

Sample answer:

I think it should be when I was in junior high. In those science classes, I learned the basics of physics, chemistry, and biology, you know, the basic rules and laws of nature. Although they were a bit challenging, I found them quite interesting, especially chemistry.