上皮钉突不会出现在()。
A.扁平苔藓
B.盘状红斑狼疮
C.根尖囊肿
D.良性黏膜类天疱疮
E.都不会出现
参考答案:D
It is about 600 years ago ______ the first clock was made.[ ]
A. that
B. until
C. before
D. when
薪酬的心理激励方面应掌握的技巧有哪些?