急腹症患者,结合图像,最可能的诊断为()
A.结肠积气症
B.胃幽门梗阻
C.气肿性胃炎
D.胃癌
E.以上都不是
参考答案:C
-5是5的相反数[ ]
The songs _______ Jay Chou sings are popular with students.[ ]
A. why
B. whom
C. what
D. which