_________ difficult and challenging the task may be, we must finish it on time, because there is a possibility _________we’ll be fired if we can’t fulfill the task on time．

A．Whatever; that

B．However; that

C．Whatever; which

D．However; as

尿频脾肾气虚型的症状有（）

A.面白无华

B.畏寒怕冷

C.四肢不温

D.小便频数

E.晨起眼睑轻度水肿