肝癌最常见的转移途径是()。
A.肝内血行转移
B.肝外血行转移
C.直接蔓延
D.淋巴转移
E.种植转移
参考答案:A
解析:肝癌肝内血行转移发生最早也最常见,可侵犯门脉并形成癌栓。
Near the table _____ a poor dog, who desired to satisfy his hunger with _____ fell from the table.[ ]
A. laid; something
B. lay; that
C. laid; that
D. lay; what
金属拉伸实验中抗拉强度的符号是бb。