It is surprising that such a young boy can swim ______ the river ______ 100 meters wide.

A．over; measured

B．across; measuring

C．across; measures

D．through; measuring

患者男，37岁，症见左下肢疼痛，皮肤黯红而肿，趺阳脉搏动消失，左足第四、第五趾色紫黑溃破腐烂，创面肉色不鲜，疼痛异常，彻夜难眠，发热，口干，纳差，便秘，小便黄赤，苔黄腻，脉洪大。

该病当与下列哪些疾病相鉴别，除了：（）

A.雷诺病

B.大动脉炎

C.糖尿病性坏疽

D.下肢静脉曲张

E.肢体动脉栓塞