On a cold winter afternoon, I was walking home from a supermarket.I was feeling a little tired.as I was carrying my shopping bags.They were so heavy that I decided to stop to have a rest in the
In those days, our ________ concern was to provide people who were stopped by the snow storm with food and health care. A. normal B. constant C. permanent D. primary
I hear Sam lives here, but I’m not sure ________. A. which room he lives in B. which room does he live in C. he lives in which room D. in which r
依次填入下列各句横线上的词语,最恰当的一组是( ) (1)十年内乱中,多少科技工作者被剥夺了开展科技研究的 。 (2)那些见利
已知某温度下,以下酸的电离常数如下:Ka(HCN)=6.2×10-10 mol·L-1、Ka(HF)= 6.8×10-4 mol·L-1、Ka(CH3COOH)=1.8×10-5 mol·L-1、、Ka(HNO2)= 6.4×10-6mol·L-1。物质的量
就人类文明史而言,它成就了英国工业革命,在法国诱发了启蒙运动和大革命。到今天为止,还没有第二个重要的科学和学术理论,取得过如此之大的
对待中国传统文化,既有 “兼容并包、全盘继承”的守旧主义,也有“全盘抛弃,彻底西化、完全欧美”的民族虚无主义和历史虚无主义。这两种态度
根据意境与感情下列词句中应填入的句子是( ) ① 楚客登临,正是暮秋天气。引疏碪、断续残阳里。对晚景、伤怀念远,