铜接线管接续线时，首先用砂布将线头擦干净约（）mm长，接线管内也应该擦干净。
A.150
B.200
C.250
D.300
参考答案：D
Tony likes sports very much. She's very ______. [ ]
A. outgoing
B. athletic
C. kind
D. early
小脑幕裂孔疝时，疝入小脑幕裂孔的组织是（）
A.额叶内侧
B.颞叶沟回
C.顶下小叶
D.枕叶
E.小脑扁桃体
