【正确答案】 B

【答案解析】[解析] abrupt：突然、猛然。noisy：吵闹的，例如：His daughter was very active and noisy in the mornings．他的女儿一到上午就很好动，吵吵闹闹的。sudden：突然，例如：All of a sudden it started to rain。天空突然下起了雨。slow：缓慢的，例如：After the flood there was a slow return to normality．水灾后，情况慢慢恢复正常。jumpy：坐立不安的，例如：It was beginning to make him very jumpy．这使他开始感到心神不安。