Crohn病与肠结核的最重要鉴别在于

A．有无发热、乏力、腹泻
B．病变是否见于回肠末段
C．肉芽肿有无干酪坏死
D．有无血沉增快
E．是否形成瘘管

. Not only the whole nation, but the whole Europe , indeed the whole human society ______ to alter its attitude to racial problems.

A．need

B．needs

C．has a need

D．have a need