吐舌习惯易造成 ()
A.开牙合
B.反牙合
C.牙间隙
D.ABC都是
E.ABC都不是
参考答案:D
31. Nobody believed his reason for being absent from the class ______ he had to meet his uncle at the airport.
A.why
B.that
C.where
D.Because
( )指的是项目动用的时间目标,也即项目交付使用的时间目标。
A.进度目标 B.质量目标 C.施工目标 D.计划目标