下列关于芽的叙述中，不正确的是 [ ]

A．叶芽可以发育成新的枝条

B．芽中有分生组织

C．枝条上都生有芽

D．芽只能发育成枝条

—We’ll be back for our school’s        anniversary ceremony.

—I see. That means you'll have a get-together with your classmates in        years.

A．fifteen; seven

B．fifteenth; seven

C．fifteen; seventh

D．fifteenth; seventh