腭中线裂开
A.纵行骨折 B.不对称骨折 C.LefortⅠ型骨折 D.LefortⅡ型骨折 E.LefortⅢ型骨折
参考答案:A
解析:腭中线为前后纵行方向。
If you______to her about it yesterday, you ______ what to do now.
A.should have spoken; would know
B.spoke; would know
C.had spoken; would have known
D.had spoken; would know
哪些情况下真值是可知或相对可知的?