九十多年来的实践证明，中国共产党在继承辛亥革命的爱国主义精神的同时又超越了辛亥革命的历史局限，谱写了中华民族自强不息、顽强奋进
下列两种气体的分子数一定相等的是（ ） A.质量相等，密度不等的N2和C2H4 B.等体积等密度的CO2和N2C.等温等体积的
In Singapore，a southern Asian country, the Chinese the largest percentage of its population，so you can speak Chinese there． A．make up B．take up C．hold up D．tur
His father has worked in this factory _____ he came here in 1980 A.since B.for C.when
Bill always seems so confident, but ________ he’s extremely shy. A. in vain B. in contrast C. in reality D. in surprise
根据前人研究的成果，火星和地球沿着各自的椭圆轨道绕太阳运行，根据开普勒行星运动定律以及能量方面的相关知识可以判定下属选项正确的是：（
