【简答题】(1)ZigBee无线传感器网络中,主要有______、______、和______3种类型的设备。
【简答题】There (come, comes) the three noisy children from next door.
【简答题】一个屋顶的某一个斜面成等腰梯形,最上面一层铺了21块瓦片,往下每一层多铺一块瓦片,斜面上铺了20层瓦片,问共铺了多少块瓦片
【单选题】一个屋顶的某一个斜面成等腰梯形,最上面一层铺了21片瓦片,往下每一层多铺一片瓦片,斜面上铺了20层瓦片,问共铺了多少块瓦片?
【单选题】There (comes, come) the three noisy children from next door.
【简答题】There (comes, come) the three moisy children from next door.
【单选题】一个屋顶的某一个斜面成等腰梯形,最上面一层铺了20块瓦片,往下每一层多铺一块瓦片,斜面上铺了21层瓦片,则共铺了( )块瓦片。
【简答题】There (comes, come) ____the tree noisy children from next door.
【单选题】She lived there before he ____ to China. A. came B. comes C. come D. coming
【单选题】There (comes, come) the three noisy children from next door.