题目

下列说法正确的是() A . 有静摩擦力一定有弹力 B . 重心就是物体的几何中心 C . 弹力越大，静摩擦力越大 D . 滑动摩擦力的方向总是与物体运动方向相反 答案：A从方框中选择单词，填入短文空格内，使短文意思正确、通顺，再将其适当形式填入短文后的横线上。每词限用一次。he only practice late call dream in foot without anybodyLiu Wei is an unusual young man. He lost both arms 【1】 a terrible accident at the age of 10, but he still held on to his【2】 . As a child, he loved music. He wanted to play the piano with his 【3】 , but he couldn't find 【4】 to teach him. So he had to learn it by 【5】 . He kept 【6】 for seven hours every day. He often says,“ For people like me, there are 【7】 two choices. One is to give up all ideas and quickly die【8】 hope; the other is to struggle with no arms to live a wonderful life.” Three years【9】 , he managed to become the champion of China’s Got Talent and was 【10】 the “armless pianist” by people.