题目

阅读下面短文，掌握其大意，从短文中所给的四个选项(A，B，C，D)中，选出可以填入空白处的最佳选项。 I used to be the shyestperson in the world. I 1behind my older sister,whenever I had to speak to a (n) 2person-including theMcDonald's cashier, or even a distant relative. 3asked to speak in class, Icould hardly 4, much less speak. Evenamong the few friends I had, my high, timid (羞怯的) 5earned me jokes-about beinga girl. Then in the seventh grade,my sister suggested I 6voice lessons. After a little bit of 7, I did-as long as itstayed a secret. I began 读某地等高线示意图，回答下列问题．（1）图中B点的海拔高度为 米，A点与C点之间的相对高度大于 米．（2）C点大致位于B点的 方，A点与B点的水平距离约为 米．（3）从B点爬到山顶A容易，还是从C点爬到山顶A容易？为什么？ ．