A. Because he’ll write a report. Because he’ll be with his friends. C. Because he doesn’t like the game. D. Because he doesn’t know the players.
A. 心尖区舒张早期奔马律 B. 心尖区舒张晚期奔马律 C. 心音分裂 D. 震颤 E. 收缩早期喷射音
A. 对 B. 错