Dick can ______ English and a little Chinese. [ ]
A. speak
B. talk
C. say
D. tell
答案:A
支托长度应为磨牙颌面近远中径的
A.1/4
B.1/3
C.1/2
D.2/3
E.3/4
()是大多数真菌细胞壁的主要成分,它的结构单元为();纤维素是以()为单元的多聚体。