骨恶性肿瘤最常见的骨膜反应()
A.条状骨膜反应
B.葱皮状骨膜反应
C.放射状骨膜反应
D.三角形骨膜反应
E.花边状骨膜反应
参考答案:D
The recent finding shows that once _____ computer games, one will find it difficult to give it up. [ ]
A. satisfied with
B. addicted to
C. bored of
D. impressed by
电价改革的原则是什么?