计划工作的普遍性中蕴含着一定的秩序，最主要的秩序表现为计划工作的_________和_________。
参考答案：纵向协作性；横向协作性
关于腮腺浅叶肿瘤手术切除。不正确的是（）
A.术前美蓝导管注入
B.可行区域切除术
C.需行面神经解剖术
D.可行浅叶切除术
E.需行腮腺全叶切除术
The teacher _____ by your story in the free talk yesterday, for his eyes were wet. [ ]
A. must be moved
B. must have been moved
C. should be moved
D. should have been moved
