—What's the _______ of those books?
—Two yuan each.
小明要用如图所示的实验器材探究电压一定时,电流热效应与电阻的关系,其中瓶内电阻丝的长度、粗细都相同.
弓箭____(jiàn qiáng) 预计____(yù yǜ ) 招待____(dài dāi)
吩咐____(fēn fēng) 绳索____(suǒ shuǒ) 丞相____(xiàng xiāng)