The boy was observed __________ basketball at eight o’clock yesterday.

A．playing

B．play

C．to play

D．having played

动眼神经副核发出纤维支配

A．泪腺
B．上睑提肌
C．眼轮匝肌
D．瞳孔括约肌
E．瞳孔开大肌