which的用法总结小学

　　Which part of Japan do you come from?

　　你是日本哪个地区的人？

　　There is some noise in the data which needs to be reduced.

　　资料里有一些需要删除的不适用信息。

　　Which is the largest city in the world?

　　世界上最大的城市是哪个？

　　Which way did they go?

　　他们往哪边去了？

　　Which features do you look for when choosing a car?

　　你挑选轿车时要着重哪些特点？