题干
—He is eager to try something he has never tried before.
—Oh, I see. That’s _______ he’s different from others.
A：whe
B：where
C：how
D：what
答案(点此获取答案解析）
B
A：whe
B：where
C：how
D：what
在定义域
内可导,其图象如图,其导函数为
,则不等
的解集是（ ）