题干
-- Where is my coat?
-- ___________.
A：Yes, it is.
B：Here is it.
C：Here it is.
D：Here they are.
答案(点此获取答案解析）
C
-- Where is my coat?
-- ___________.
A：Yes, it is.
B：Here is it.
C：Here it is.
D：Here they are.
， 
，已知
，那么实数k的