A：花生油
B：芝麻油
C：乙酸乙酯
D：玉米油
写出反义词
珍贵—____ 急促—____ 马上—____
学在方程5x-1=□x+3时，把□处的数字看错了，解得x=-43,该同学把□看成了（ ）
Tom was so careless that he his right arm when he was riding to school
yesterday．
