肠套叠可见腹痛，并伴有（）
A.急性发热
B.黄疸
C.呕吐
D.腹泻
E.血便
参考答案：E
— I heard that one of the middle school students died from overwork.
— Yes, ______ news came as ______ great shock.
A．the; /
B．the; a
C．/; a
D．/; /
MP3是目前最流行的数字音乐压缩编码格式之一，其命名中“MP”是指 (1) ，“3”是指 (2) 。
A．mediaplayer
B．multipleparts
C．music player
D．MPEG-1 Audio
