Excuse me, _____ you speak English? [ ]
A. can
B. are
C. does
答案:A
下颌最大前伸范围是()
A.3mm
B.10mm
C.12~16mm
D.18~25mm
E.40~60mm
下面除了哪两个研究人员之外都可以在第二小组
A.F和J
B.F和M
C.F和R
D.J和M