已知直线过点且与线段相交,那么直线的斜率的取值范围是( )
A:
B:
C:
D:
根据汉语提示,完成句子 Good eating____(习惯) are very important. Healthy lifestyle helps me get good____ (成绩). He is____(躺)in bed to read a book.
I will____ (寄) Tom a postcard. If you are____(口渴的), you may have an apple.
在胎儿生长发育的过程中,母亲与胎儿之间进行物质交换的场所是( )