A:Yes , I like English.
B:No ,I don't like science..
C:Yes, I like Chinese.
There is a tall tree _________ my house. I often play games under it.
豌豆叶肉细胞中,含有核酸、碱基、核苷酸的种类分别是( )
钝角三角形ABC中,∠BAC>90°,∠ACB=α,∠ABC=β,过点A的直线l交BC边于点D.点E在直线l上,且BC=BE.