最可能的诊断是
A．慢性肠套叠
B．克罗恩病
C．右半结肠癌
D．卵巢囊肿蒂扭转
E．直肠癌伴梗阻
参考答案：A
Everyone's attention was drawn to the eightyearold girl who was ________ perfectly at the piano.[ ]
A．acting
B．behaving
C．doing
D．performing
下列属于虚实错杂的是（）
A.真实假虚
B.表实里虚
C.真虚假实
D.阴阳两虚
E.气血亏虚
