---Why didn’t you write? --- My ink has _______. A.used up B.run out of C.given away D.given out
The bathroom has hairs on the floor from the previous guest so it can’t ___________ (打扫过) very well. (clean)
Equipped with modern facilities,today’s libraries differ greatly from . A.those of the past B.the past C.which of the past D.ones of the past
(7分)根据以下提供的实验用品,设计一个原电池装置。选用装置:铜片、锌片、铁片、石墨、导线、硫酸铜溶液、稀硫酸、盐酸、氯化铁溶液、烧杯现
如图8所示的电路是家用电饭锅工作原理图.当开关S闭合时为加热状态,当开关S断开时为保温状态,已知加热时的电功率为800W,保温时的电功率为100W,
长方体内盛有一半的水,密封后将底面放在水平桌面上,然后将该长方体绕慢慢转动使之倾斜,在此过程中有下列四种说法 ①棱始终与水面平行;
春秋战国时期出现“百家争鸣”局面的主要原因是( ) A.私学发展,涌现出大量人才 B.诸侯争斗激烈,各种治国观点层出不穷 C.阶级阶
常建在《题破山寺后禅院》中借写景来抒发隐逸之情的诗句是:“ , 。”