原发性肝癌最主要的转移部位是（）
A.肺
B.肝内播散
C.骨
D.左锁骨上淋巴结
E.脑
参考答案：B
解析：原发性肝癌肝内血行转移最常见，发生最早。
–Do you think they have as many books as they’ve described?
--Well, in my opinion, they have few books, if ______.
A．some
B．none
C．any
D．many
安全色绿色代表什么？
