As students, we should____________ourselves. We can’t spend much time playing co As students, we should____________ourselves. We can’t spend much time playing computer games. 分类:中考 题型:选择题 查看答案
— Jenny was ________talent of being a singer. — You’re right. She sang well when — Jenny was ________talent of being a singer. — You’re right. She sang well when she was a little gi 分类:中考 题型:选择题 查看答案
如图, 正四棱锥 P﹣ ABCD 的每个顶点都在球 M的球面上, 侧面 PAB 是等边三角形. 若半球 O 的球心为四棱锥的底面中心, 且半球与四个侧面均相切, 如图, 正四棱锥 P﹣ ABCD 的每个顶点都在球 M的球面上, 侧面 PAB 是等边三角形. 若半球 O 的球心为四棱锥的底面中心, 且半球与四个侧面均相切, 则半球 O 的体积与球 M的体积的比值 分类:中考 题型:选择题 查看答案