题目选项分析

During the early years of European settlement on a continent that was viewed as "wilderness" by the newcomers, Native Americans, intimately knowing the ecology of the land, were a help in the rescuing of many Pilgrims and pioneers from hardship, or even death.

During the early years of European settlement on a continent that was viewed as "wilderness" by the newcomers, Native Americans, with their intimate knowledge of the ecology of the land, helped to rescue many Pilgrims and pioneers from hardship, or even death.