变移上皮在器官充盈时,表层细胞()
A.呈扁平状
B.游离面壳层增厚
C.细胞核变成2个
D.呈伞状
参考答案:A
给下面多音字注音并组词。
①奔( )________
( )________
②丧( )________
—___________?
—It ‘s black.
A.What’s this B.Who is it C.What color is it