管理是人类社会生活中的一种()现象。
A.普遍
B.特殊
C.一般
D.偶然
参考答案:A
患者突发腹部剧痛,伴全腹肌紧张、压痛、反跳痛,为明确诊断首选下列哪种检查()
A.卧位腹平片
B.胸片
C.立位腹平片
D.腹部CT
E.上消化道钡餐透视
— Jenny _____ have kept her words. Why did she change her mind?
— I think she _____ give more explanations to us.
[ ]
A. should; has to
B. should; had better
C. should; should
D. ought to; need