新生儿缺氧缺血性脑病早期主要的病理变化为（）

A.脑水肿

B.颅内出血

C.脑内炎症细胞浸润

D.脑细胞变性

E.脑组织坏死

MIDI enables people to use (51) computers and electronic musical instruments. There are actually three components to MIDI, the communications " (52) ", the Hardware Interface and a distribution (53) called "Standard MIDI Files". In the context of the WWW, the most interesting component is the (54) Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol (55) are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.

（53）是（）

A.format

B.text

C.wave

D.center