I can't go out now because I have _____________ homework to do. [ ]
A. many
B. much
C. a
答案:B
颈部肿块在下列哪个部位应考虑甲状腺腺瘤:()
A. 颈侧部
B.颌下区
C.颈前正中区随吞咽上下活动
D.颈前正中区随伸舌活动
乳牙反的最佳矫治时间是()
A.2~3岁
B.3~4岁
C.3~5岁
D.4~6岁
E.5~6岁