需与鼓室积液相鉴别的是()
A.脑脊液耳漏
B.化脓性中耳炎
C.内淋巴漏
D.外淋巴漏
E.鼓室体瘤
参考答案:A, D
)According to __________ World Health Organization, health care plans are needed in all big cities to prevent __________ spread of AIDS.
A.the; 不填
B.the; the
C.a; a
D.不填; the
龋损的好发牙面为()
A.咬合面
B.颊面
C.舌面
D.邻面
E.轴面