糖尿病视网膜病变按眼底改变可分为两大类_______和________。
参考答案：非增殖型 、增殖型
To make believe that there was still someone in the house, the housewife went downstairs, ______ the lights ______ in the living room.
A．left; burnt
B．leaving; burning
C．leaving; burnt
D．left; being burnt
以下不由面神经运动神经纤维支配的是（）。
A.提上睑肌
B.颊肌
C.二腹肌
D.茎突舌骨肌
E.镫骨肌
