根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项，并将答案填入相应番号之后的横线上。选项中有两个为多余选项。
Woman: Can I help you, sir?
Man: ____ 
Woman: OK. What about this pair?
Man: Sorry, I don’t like black. ____ 
Woman: Yes ,we do. We also have got blue, brown and white
Man: ____ 
Woman: Yes, please.
Man: How much does each pair cost?
Woman: Eighty-six dollars.
Man: It’s too dear!____ 
Woman: How about seventy dollars?
Man: No, it’s still dear. What about sixty?
Woman: Sixty? Er…all right. Try them on, please.
Man: That’s fine. I’ll take this pair.  ____ 
Woman: Thank you. 

把10、20、30、40、50填在圆圈内使每条直线上三个数的和都等于90。

如图所示为种群与物种的关系图解，关于它们的叙述错误的：（  ）