Don't ______ the window. Listen to me carefully.

A．look out

B．look out of

C．look out at

D．look for

指出不属于疳积上目的临床表现（）。

A.白睛萎黄

B.有夜盲

C.黑睛呈镜面哈气状

D.黑睛表面枯晦

E.可伴有黄液上冲