月经后子宫内膜的再生起于()
A.子宫肌层
B.致密层
C.基底层
D.海绵层
E.功能层
参考答案:C
某同学发现家里储存的橘子长毛了,而且是青绿色的。他根据学过的知识,判断该“毛”属于( )
A.霉菌
B.大肠杆菌
C.乳酸菌
D.金黄色葡萄球菌
After all of us finished our homework, the teacher told us _________at once.
A.to hand it in
B.hand them in
C.to hand them out
D.hand it out