【单选题】有横嵴的是( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】American schools fall into two categories, namely, _______________.
A.
public and private schools
B.
academic and vocational schools
C.
coeducation and single sex schools
D.
national and state-run schools
【简答题】数学中一些常用的数集及其记法:全体整数组成的集合称为整数集,记作__________; 全体有理数组成的集合称为有理数集,记作__________; 全体实数组成的集合称为实数集,记作___________.
【单选题】下颌第一磨牙正确的是( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
E.
有横嵴 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
【单选题】上颌第一磨牙牙冠上 不可能有 的嵴是( ) prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>