帮我把这篇中文翻译成英文，拒绝翻译软件，急用，谢谢

I've learned many things in this term. In this subject, I like Lesson 7 "Animal Classes" the most. This lesson gave me much knowledge abouth animals, and answered many questions which I didn't know before. For example, whether dolphin is a mammal

after the study of a whole semester, l've learnt a lot. in this subject, i like lesson7 animal classes the most. i tells me a lot of knowledge about animals, and has solved many questions that i don't know before, say that dolphins are not mammal

I have learned a lot in this semester. The lesson I like the most in this subject is Lesson 7 Animal Classes. I learned some more advanced knowledge about animals in this lesson, like dolphins are mamals.