骨肉瘤X线片可见病变
A.发生于骨端
B.短管状骨多见
C.可见“日光照射”现象
D.可为膨胀性生长
E.与正常组织界限清楚
参考答案:C
地壳中含量最多的元素是( )
A.铝
B.铁
C.氧
D.硅
__________ attracts movie goers in the film Avatar is its vivid three-dimension effect (三维效果) , grand war scenes and touching love story.
A.That
B.What
C.Which
D.It