肾盂结石1.2cm,IVP右肾功能正常,轻度积水,输尿管通畅,首选的治疗方法是( )。
A.中药排石
B.消炎止痛
C.手术取石
D.体外震波碎石
E.大量饮水
参考答案:D
Hurry up! The train _______. You know it ________at 8:30 a.m.[ ]
A. leaves; leaves
B. is leaving; leaves
C. leaves; leaving
D. is leaving; is leaving
与⊕B等价的逻辑表达式是______。(⊕表示逻辑异或,+表示逻辑加)
A.A+
B.A⊕
C.A⊕B
D.AB+