As everybody knows，     a person I s，the more things he needs to do tomorrow.

A．the lazy

B．lazier

C．the lazier

D．the laziest

疲劳性骨折常常发生在下述哪个部位（）

A.髌骨上极

B.尺骨鹰嘴

C.第二、三跖骨

D.第一趾骨

E.尺骨下段