—Did Jenny clean the whole house yesterday ?

—She         because she was not quite herself .

A．hadn’t cleaned it

B．had it cleaned

C．had cleaned it

D．cleaned it

一侧足跟着地至对侧下肢足趾离地时称为（）

A.首次着地

B.负荷反应期

C.站立中期

D.站立末期

E.迈步初前期