男性,60岁,有高血压病史,于夜间发生阵发性呼吸困难伴喘鸣,并咳粉红色泡沫样痰。应考虑为()
A.支气管哮喘
B.心源性哮喘
C.气管异物
D.肺气肿
E.呼吸衰竭
参考答案:B
已知定义在R上的奇函数f(x)满足f(x+2)=﹣f(x),则f(6)的值为[ ]
A.﹣1
B.0
C.1
D.2
President George W. Bush
布什总统
George W. Bush earned a reputation for______.
A.involving two political parties in his administration B.representing two political parties C.working for the interests of two political parties D.supporting two political parties