在小肠中发挥消化作用的消化液主要是 [ ]
A.唾液、胃液、肠液
B.肠液、胰液、胆汁
C.胃液、胰液、肠液
D.胆汁、唾液、胰液
答案:B
以下哪一项检查不适合腮腺肿瘤
A.B超
B.造影
C.穿刺检查
D.CT检查
E.切取组织活检
Sir, you _______ be sitting in this sitting room. It is for women and children only.
A.oughtn’t to
B.can’t
C.won’t
D.needn’t