The one concern for parents and students is _______ the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.

A．that

B．that if

C．whether

D．how

臁疮症见创面色暗，黄水浸渍，患肢浮肿，纳食腹胀，便溏，面色萎黄。舌淡苔白腻。治疗宜（）。

A.清热利湿，和营消肿

B.健脾利湿

C.益气活血消瘀

D.养阴清热

E.养阴生肌