已知正方形ABCD中,E为对角线BD上一点,过E点作EF⊥BD交BC于F,连接DF,G为DF中点,连接EG,CG.
— Oh, I love it very much because it is so practical.
I usually get up ____ 7: 00.( )
不能通过细胞膜的营养物质是( )