急性牙槽脓肿最常见的排脓方式是()
A.通过根管从龋洞排脓
B.向鼻腔排脓
C.穿通唇颊侧骨壁排脓
D.穿通舌腭侧骨壁排脓
E.由龈沟或者牙周袋排脓
参考答案:C
It was _____ she took off her dark glasses _____ she was a famous film star. [ ]
A. when, that didn't realize
B. not until, that I realized
C. not when, when I realized
D. until, that I didn't realize
把一个文件从硬盘复制到U盘的方法有()。
A、剪切与粘贴
B、复制与粘贴
C、使用文件菜单的新建命令
D、使用文件菜单的发送命令