地球村观念的提出者是()
A.英尼斯
B.戈夫曼
C.麦克卢汉
D.梅罗维茨
参考答案:C
在一份有关膀胱癌与吸烟关系的前瞻性队列研究中,发现男性吸烟者膀胱癌发病率为48.0/10万,不吸烟者为25.4/10万。
其归因危险度百分比为()
A.52.92%
B.47.08%
C.88.98%
D.43.04%
E.无法计算
It's a common scene now in Chile that families cry helplessly over ____ is left of their homes. [ ]
A. that
B. which
C. there
D. what