1年前1个回答
你能帮帮他们吗
精彩回答
Dear students,please read every sentence carefully.______ you are,______ mistakes you'll make.
1年前
Danny thought he _________ hit the ball, but he hurt his hand.
1年前
列表谈论函数y=x的立方+3x的平方-9x+1的单调性,凹凸性,极值及拐点.
1年前
在△ABC中,AB=AC,O是边AC上的点,以OC为半径的圆分别交边BC、AC于点D、E,过点D作DF⊥AB于点F.
1年前
Would you like ____ Christmas gift?
1年前