造成胆囊底部诊断的假阳性或假阴性的主要原因是（）
A.肥胖
B.含气肠襻干扰
C.胰腺遮挡
D.胃蠕动
E.消瘦
参考答案：B
Just as he went to the supermarket, he was stopped and ________ of stealing things.[ ]
A．charged
B．blamed
C．warned
D．accused
为什么单芯电缆不能有钢铠而三芯电缆可以有钢铠？
