下述哪项不是结合上皮的特征()
A.无角化
B.钉突较短
C.胞浆中张力细丝较少
D.细胞间的桥粒较少
E.在龈沟底部约10层细胞
参考答案:B
Food supplies in the flood-stricken area _______. We must act immediately before there’s none left.
A.have run out
B.have been run out
C.are running out
D.are being run out
陈晶用935元人民币兑换了93.5欧元,人民币与欧元的兑换最简整数比是( ),比值是( )。