天疱疮属于()
A.原位癌
B.基层下疱
C.棘层内疱
D.粒层增生
E.基底细胞液化
参考答案:C
下列成语与我们所学的化学知识有关.请简述其中的化学原理.(1)百炼成钢______;
(2)釜底抽薪______.
These story books for children are awfully written. They _____ are interesting_____ exciting. [ ]
A. either; or
B. neither; nor
B. both; and
D. not only; but also