林林家距离学校a千米,骑自行车需要b分钟,若某一天林林从家中出发迟了c分钟,则她每分钟应骑______千米才能不迟到.
所用时间为:b-c.∴林林的骑车速度为ab-c.
She red with anger as soon as she heard the news that her favorite team had been defeated.
A.went
B.came
C.stayed
D.remained
女,43岁,右下腹持续性疼痛5天,伴恶心、呕吐,呕出物为胃内容物。体温38.5℃。体检发现右下腹5cm×5.5cm大小肿块,触痛明显
如果急诊手术,最合适的手术方式是()。
A.脓肿引流
B.切除肿块
C.常规切除阑尾
D.右半结肠切除
E.一期肠吻合