【简答题】A free sample is a sample of a consumer product that is given to the consumer free of cost so that he may try a product before (commit) to a purchase.
【单选题】听力原文: The human nose has given to the languages of the world many interesting expressions.Of course,this is not surprising.Without the nose,we could not breathe nor smell.It is a part of the face that...
A.
The human nose as an organ for breathing and smelling.