骨髓增生良好的贫血患者经药物治疗后，外周血网织红细胞达到高峰时间为（）

A.1～2天

B.3～5天

C.5～10天

D.10～15天

E.15～30天

_______his knowledge of the mountainous country, John Smith was appointed as our guide.

A．In spite of

B．On account of

C．Regardless of

D．Instead of