题目

阅读下面短文，从各题所给的A、B、C、D四个选项中选出最佳选项，第四篇阅读后根据要求答题。 I am 15. Now I’m studying Englishin London. I want to invent a language machine that can help me understand asmany languages as possible. Marie, France I am 13. I dream of going to a topuniversity after I graduate. I want to be a reporter in the future. Michiko, Japan I am a 12 year-old girl. I liketravelling very much. How I wish to visit Egypt some day! Masha, Russia I am a 16 year-old girl in Tibet（西藏）. The Qinghai TibetRailway has been built. I’ll be 一段公路路面的坡度，这段公路路面长100米，那么这段公路升高 [　　] A．30米 B．10米 C．米 D．米