X线片表现为“葱皮状”反应性骨形成主要见于
A.软骨肉瘤
B.尤文肉瘤
C.恶性骨巨细胞瘤
D.骨髓瘤
E.骨转移性肿瘤
参考答案:B
Tom’s teacher and classmates all knew Tom would not do well, but he succeeded _________ their expectations.
A.below
B.by
C.in
D.beyond
在统计学中,定性因素是指( )
A.定性指标
B.计量资料
C.计数资料
D.等级资料
E.变量