[解析]
6.A 7.C
W:Chris,how long have you been living in China?
M:Almost 8 years.
W:That's a pretty long time.What brought you here in the first place?
M:Well,I first came here on exchange for two years during my college.I loved it.After finishing college in my country,I just came back.
W:Wow.That was brave.
M:Yeah.And I've been very lucky to find a great job here in Shanghai.
W:Shanghai does have many job chances,right?
M:Yes.But my favorite city in China is Xi' an.It has a great history.
W:That's true.