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Over the past two decades the popularity of t
问题详情
Over the past two decades, the popularity of the bicycle as a mean of transportation and recreation has increased tremendously in the United States.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：mean--means
考查名词辨析。mean作名词，表示“中间；平均数”，用于此不符合句意。此处表示“方法，手段，工具”，应该用以s结尾的名词means。
