which引導的從句

　　There are two points which I wanted to make.

　　我想要指出的有兩點。

　　We are still friends, though, which is good.

　　不過我們仍然是朋友，這令人感到欣慰。

　　Which part of Japan do you come from?

　　你是日本哪個地區的`人？

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

　　資料裡有一些需要刪除的不適用資訊。

　　Which is the largest city in the world?

　　世界上最大的城市是哪個？