参考答案

正确答案：B
B [解析]从When you need to sneeze you sneeze，this being nature' s clever way of getting rid of all annoying object from the nose．The object may be just some dust in the nose which nature is striving to remove.可知。此题考查对段落文意的理解。在最后一段中“nature”作为关键词，是判断本题的重要依据。