题目

阅读理解CHi Ann， How are you？Do you like your school? I like my school a lot. My teachers are very nice. Some of my subjects are fun, but some of them are boring. I like English and art, but I don't like math. My brother likes his school, too. He likes math, but he doesn't like English. His favorite class is P．E. He likes it very much. Does your sister like her school? What subject do you like?EmmaHi Emma, It's nice to hear from you. I'm fine, thanks. Yes, I like my school, but my sister doesn't. She doesn't like homework! I like music and English, but I don't like P．E.I like all o用数学归纳法证明2n＞n2（n∈N*，n≥5）成立时，第二步归纳假设正确写法（　　） A、假设n=k时命题成立B、假设n=k（k∈N*）时命题成立C、假设n=k（n≥5）时命题成立D、假设n=k（n＞5）时命题成立