诊断内分泌疾病，下列哪项较易于确定
A．病理诊断
B．功能状态
C．病因诊断
D．细胞学
E．物理诊断发现
参考答案：B
What we all know is that the old scientist, _______ life was hard in the past, still works very hard in his eighties.
A．for whom
B．for him
C．for whose
D．for which
采用邻接表存储的图的广度优先遍历算法类似于二叉树的（）。
A.先序遍历
B.中序遍历
C.后序遍历
D.按层次遍历
