下列哪种疔疮不属于手足疔疮（）
A.螺疔
B.蛀节疔
C.鱼肚疔
D.泥鳅疔
E.虎须疔
参考答案：E
He didn't believe the explanation of the detective and determined to get to the ________ of the case
on his own. [ ]
A. occasion
B. discovery
C. root
D. condition
下列哪种物质属于营养必需脂肪酸？（）
A.软油酸
B.软脂酸
C.油酸
D.硬脂酸
E.亚油酸
