已知x1>0,x1≠1且xn+1=(n=1,2,3,…),试证:数列{xn}或者对任意n∈N都满足xn<xn+1,或者对任意n∈N都满足xn>xn+1.
新中国成立后,我国农村政策发生了多次变革。以下四幅图片所反映的农村政策的变 革中,哪些有利于生产力的发展 ①农民加入合作社
Most people think their time problems are outer, and that they are caused by the telephone, meetings, visitors, and delayed information or decisions. Although these problems often have a bad effete
瞿秋白曾发文对五卅运动进行总结。其说法与现在的观点比较吻合的是( )A.“中国的国民革命从五卅运动开始了”B.五卅运动“使中国的政治
______, the boss agreed to give me a pay rise. A. Much to my delight B. To my much delight C. To my greatly delight D. Great to my delight
如图是某组织结构示意图,①②③④表示不同的液体.则图中毛细血管壁细胞生活的具体内环境是( ) A.③ B.④ C.②④ D.②③
(1)请用化学用语填空.①二氧化硫分子 ;②钠离子 ; (2)写出“3N2”符号中数字的含义.“3” ;“2” . (3)请书写下列化学方程式.①电
— I’m , Deng Lan. — Why not eat some bread or hamburgers? They are both delicious. A. hungry B. angry C. happy