题干
--How about this dress, sir?
--It’s a little expenseive, and ____, its color doesn’t suit me.
A：somehow
B：anyway
C：furthermore
D：therefore.
答案(点此获取答案解析）
C
A：somehow
B：anyway
C：furthermore
D：therefore.
在一个周期内的图象如下，此函数的解析式为 
