单选题
______ to some parts of South America is still difficult, because parts of the continent are stilt covered with thick forests.
【正确答案】
B
【答案解析】[试题分析] 本题为名词词义辨析题。
[词义辨析] orientation意为“适应，熟悉”；access to意为“接受，进入”；procession意为“队伍，行列”；voyage意为“航海，航程”。根据题意，选项[B]为正确答案。