【单选题】The Frontier and the Family The impact (影响) of the frontier has been traditionally assumed by historians, who have studied its effects on mountain men and cowboys, political and social institutions. Y...
A.
received little attention
B.
was insignificant, if compared with the impact of the frontier on cowboys
【单选题】'Frontier', one of many English words that took on new meanings in North America, has assumed as well a role in explaining the continent's history during the past five hundred years. In time the word ...
A.
show his influence in American history studies
B.
indicate the complex nature of the term 'frontier'