—dayisittoday? —Tuesday.[ ] A.Who B.What 发布时间:2017-05-02 16:43 │ 来源:www.tikuol.com 题型:选择题 问题: — day is it today? —Tuesday.[ ]A. Who B. What C. Where
题型:选择题 将侧棱相互垂直的三棱锥称为“直角三棱锥”,三棱锥的侧面和底面分别称为直角三棱锥的“直角面和斜面”;过三棱锥顶点及斜面任两边中点的截面均称为斜面的“中面”.请仿照直角三角形以下性质:(1)斜边的中线长等于斜边边长的一半;(2)两条直角边边长的平方和等于斜边边长的平方;(3)斜边与两条直角边所成角的余弦平方和等于1.写出直角三棱锥的相应性质(至少一条):______. 查看答案
题型:选择题 The pain is gone after weeks of the operation, but the scar _____.A.stopsB.remainsC.pausesD.leaves 查看答案
题型:选择题 — _______ have you been in the singing group? —More than five years by now.A. When B. How long C. How often D. What time 查看答案
题型:选择题 Only middle-class Americans benefited from the prosperity in the post-war era.A.TrueB.False 查看答案