脓耳的证候特征是：（）
A.耳膜内陷，耳内流脓
B.耳膜钙化，耳内流脓
C.耳膜萎缩，耳内流脓
D.耳膜混浊，耳内流脓
E.耳膜穿孔，耳内流脓
参考答案：E
骨肉瘤常经血液转移至（）
A.肺
B.脑
C.肾
D.肝
E.脾
When people want to relax themselves, they prefer () TV or listen to music rather than () newspapers.
A．watching; read
B．watching; to read
C．to watch; read
D．to watch; reading
