蛛网膜下腔出血的确诊方法为()
A.脑血管造影
B.MRA
C.MRV
D.CT
E.MRI
参考答案:A
He lives far from his school. So every day He _______. [ ]
A. takes a bus home
B. takes a bus to home
C. goes to home by bus
D. by bus home
下列不属于文献的基本属性的是()。
A.知识性
B.记录性
C.物质性
D.准确性