---David said he could fix my computer, but I really doubt it.

---________. He is very good at such sort of thing.

A．Don’t worry

B．Of course

C．A piece of cake

D．Never mind

鄂伦春自治旗首府镇阿里河镇。阿里河镇因水得名。阿里河发源于伊勒呼里山脉的南坡，阿里河在鄂伦春语里意为什么？