Three weeks after the application of the spica cast following surgery for an infant, the mother told the nurse that the infant's toes are swollen and cool to the touch. Which of the following would the nurses suspect

A．Cotton wadding lining of the cast has shrunk.

B．An infection has developed under the cast.

C．Child's feet were in a dependent position.

D．Child has outgrown the spica cast.

急性阑尾炎时，McBurney点有明显压痛，其位置应在（）

A.两侧髂前上棘连线的右侧中、外1／3交点处

B.左髂前上棘与脐的连线的中、内1／3交点处

C.右髂前上棘与脐的连线的中、外1／3交点处

D.右髂前上棘与脐的连线的中、内1／3交点处

E.左髂前上棘与脐的连线的中、外1／3交点处