题型:填空题 正方体棱长为5cm,先从其中四个顶点处各挖去一个棱长为1cm的小正方体,然后在剩余的四个顶点处各挖去一个棱长为1.5cm的小正方体,最后在原来各面的中央粘上一个棱长为1cm的小正方体,则物体的表面积=______. 查看答案
题型:选择题 The shop ______ at 7: 00 a.m. and it ______ for twelve hours every day.[ ]A. opens; is open B. is opened; opens C. is open; has opened D. opened; opens 查看答案