题干
—What are those? —_______________.
A：Yes, they are.
B：It's a tomato.
C：They're tomatoes.
答案(点此获取答案解析）
C
—What are those? —_______________.
A：Yes, they are.
B：It's a tomato.
C：They're tomatoes.
，且
是函数
的导函数，则
（ ）