Women prefer to buy food which has already been prepared      it reaches the market．

A．after

B．for

C．before

D．until

白塞综合征(Behcet’ssyndrome)的临床指征不包括

A．反复发作的口腔溃疡

B．生殖器溃疡

C．皮肤红斑

D．关节红肿

E．复发性角膜炎