放在桌面上的台灯，对桌面有压力，其受力物体是（），施力物体是（）。
参考答案：桌面；台灯
结节病的实验室检查中，下列哪项是不正确的：
A．Kveim试验阳性
B．SACE或SL活性增高
C．OT或PPD试验弱阳性或阳性
D．高血钙、高尿钙症
E．BALF中淋巴细胞＞10%
As the prisoner had been ______from the outside world for twenty years, he had no idea what the
outside world was like. [ ]
A. cut off
B. cut away
C. cut out
D. cut short
