单选题 According to the author. Americans' cultural blindness and linguistic ignorance will ______.

A、 affect their image in the new era
B、 Cut themselves off from the outside world
C、 limit their role in world affairs
D、 weaken the position of the US dollar

【正确答案】 C

【答案解析】由句子"American dollars no longer...proper role in the world is changing."和"we want to have a hand...it may not always be the upper hand．"可以看出，当今世界，美国人如果继续无视他国的语言和文化，势必会影响到她在国际事件上的影响力，故选C。