题干
—I want to know ________.
—Maybe our teacher did.
—Maybe our teacher did.
A：who wrote the note on the table
B：where did you put our teacher's bag
C：why does a person run in the school
D：whose book it is on the table
答案(点此获取答案解析）
A
是增函数（大前提），而
是指数函数（小前提），所以