题目

Dear Linda,I'm glad to hear from you and I would like to be your pen friend. In your letter, you said you wanted to know something about my school life(生活). I walk to school at 7:30 every morning because the school is near our house. When I get to school at about 7:45, I often do the cleaning with my classmates. After that we do some reading for half an hour. We have four lessons in the morning. I often have my lunch at 12:00 at school. We usually have two lessons in the afternoon. The school is over at about 5:00 and then I go home. My favorite subject is Chinese. I like all the teachers 法医鉴定某被害人的遗骨，发现无机物和有机物之比是2：1，则此人可能正处于A．青年期B．成年期C．童年期D．老年期