力的三要素是力的大小、 和作用点.
方向
患者男性,25岁,素体赢瘦,有肺结核病史,1年前出现右侧睾丸部酸胀隐痛,伴阴囊发凉,苔薄,脉滑。触诊:右侧附睾尾部有不规则的局限性结节,质硬,触痛明显,化验血沉45mm/h。
本病应诊断为()
A.子痈
B.囊痈
C.子痰
D.水疝
E.脱囊
The parents were unsettled for the first few days, _____ about their son's safety. [ ]
A. having worried
B. to worry
C. being worried
D. worried