—______is your birthday gift, Linda?
— It's a circle.
A:What kind
B:What color
C:What time
D:What shape
—Yes, she is. She's my mother's sister.
生物化石之所以能证明生物的进化,其根本原因是( )
春秋战国时期出现了百家争鸣的局面,不同政治派别对各种问题提出不同的见解。在治理国家方面,道家的主张是( )