单项选择题

C

Traffic in Giethoorn and the nearby Dwarsgracht still mostly travels over water. That is why it is nicknamed (绰号) "Venice of the North". Farm boats, canal boats and many other boats belonging to working people travel within the village. In the tourist season, you can hire one of about 400 so-called "whisper boats" and to use the village canal. Originally, Giethoorn was a typical peat (泥炭沼) village that exported millions of squares of peat. When the peat supply was used up, the people of Giethoorn changed over to cattle farming. Then sta- bles and storage (贮藏) barns were built behind the small peat house. The view (景色) in the village changed as all the new buildings with their thatched (用草盖成的) roofs resembles a blanket of camelhair. In those days using straw (稻草) for roofs was cheap. Now having a thatched roof is very expensive.

Why is Giethoorn nicknamed "Venice of the North"