题型:判断题 I’d like to buy a house --- modern, firm, comfortable, and ________ in a quiet neighborhood. A.in allB.above allC.after allD.at all 查看答案
题型:判断题 一质量为M的探空气球在以速率v匀速下降,若气球所受浮力F始终保持不变,气球在运动过程中所受阻力仅与速率有关,重力加速度为g.现从气球吊篮中减少一定质量的物体后,该气球以速率nv匀速上升,则从气球吊篮中减少的质量为( )A.n(M-Fg)B.(n+1)(M-Fg)C.M-nFgD.M-(n+1)Fg 查看答案
题型:判断题 A number of students ________ playing on the playground, and the number of studentsin our school ________ increasing. [ ]A. are; are B. is; are C. are; is 查看答案