题目

下列有关地球的描述中，正确的是( ) A . 地球是一个两极稍扁、赤道略鼓的球体 B . 火山喷发的岩浆来自于地核 C . 地球的岩石圈好像一整块拼好的 “七巧板”，说明全球由七大板块组成 D . 地球由外到内分为地核、地幔、地壳三层 答案：A.  She is now training hard for the next Olympics in London, desiring that she __ win another gold medal for her nation before she leaves the sports field forever. A. will     B. must     C. should     D. would