题目

“世界杯”带动了足球热。某社区举行了颠球比赛,如图所示,某足球高手在颠球过程中脚部几乎不动,图示时刻足球恰好运动到最高点,估算足球刚被颠起时的初速度大小最接近的是() A . 1 B . 2 C . 3 D . 6 答案:C—The weather is better today, isn't it? —Yes, it's not——. A. as colder   B. as cold     D. much cold      D. much colder  
物理 试题推荐