How______the world be different in the future? [ ]
A. has
B. does
C. will
D. did
答案:C
牛奶喂养婴儿的典型大便是()
A.大便色金黄、稍稀薄、呈酸性、无味
B.大便色淡黄、干稠、呈中性或碱性、臭味
C.大便色金黄、稀薄、呈碱性、无味
D.大便色金黄、稀薄、呈碱性、臭味
E.大便色白、于稠、呈酸性、臭味
上皮层中胞质内含嗜碱性透明角质颗粒的细胞是()
A.角化层
B.颗粒层
C.棘层
D.基底层
E.黑色素细胞