The poor ______ living in the mountain ____ top is covered with green trees.

A．are; which

B． are; of which

C．is; whose

D．are; whose

咽部灼伤行中和治疗时忌用的中和剂是（）。

A.牛奶

B.蛋清

C.碳酸氢钠

D.镁乳

E.氢氧化铝凝胶