A:①③
B:②④
C:②③
D:①④
欲获得番茄无子果实,可用( )
x的5倍加上4.8的和是12.3,求x.
____=12.3
x=____
梯形的面积等于梯形的上底加下底的和乘高
Miss Fang is _______ English teacher. _______ is a good teacher.