A:W元素的第一电离能小于Y元素的第一电离能
B:Y、Z的阴离子电子层结构都与R原子的相同
C:p能级未成对电子最多的是Z元素
D:X元素是电负性最大的元素
下列说法不符合生物学事实的是( )
已知a、b、c在数轴上的位置如图所示,则下列结论正确的是( )
Voyages
By Neil Waldman
Travel with young Abe Lincoln down the Mississippi River, taking his boat down to New Orleans. Along the way, Lincoln finds himself on his own voyage of discovery. It is an amazing experience with risk and excitement.(Chapter book)
Through Georgia's Eyes
By Rachel Rodriquez and Julie Paschkis
Discover the wideness and wonder of deserts and rivers through the eyes of painter Georgia O'Keefe. Deep-colored paper paintings show the artist's imagination and the amazing sightseeing that inspired her work. (Picture book)
A Horn For Louis
By Eric A. Kimmel and James Bernardin
Louis Armstrong was too poor to have a real music instrument, but he had a horn(喇叭). Jazz and blues music was everywhere in the streets of New Orleans. This is the story of how Louis got his first real "horn", when he was just a boy with a dream of becoming a musician. (Chapter book)
Go, Go America
By Alan Barnard
50 states of fun, with interesting facts — in what state the entertainment capital of the world is, where the first hamburgers were served, what the Cereal Festival is, who hosts the Hog Calling Contest and more.(Picture book)
将下列句子组成语意连贯的一段话,语序排列正确的一项是( )
①媒体是正能量传播的主渠道,要为和谐社会的创建营造良好的舆论环境,而不是让暴力和“负能量”动摇民众的信念.
②而正能量的传播需要传播者负责任的态度.
③正能量只有得到及时、广泛的传播,才能发挥最大的社会效益.
④同时,个体传播者也需要有正确的态度.
⑤只有每一个网络参与者都守住道德、法律的底线,才能与媒体合力用正能量坚固人们的精神高地.
阅读材料:
材料一:人民英雄纪念碑碑文写到:三年以来,在人民解放战争和人民革命中牺牲的人民英雄们永垂不朽!三十年以来,在人民解放战争和人民革命战争中牺牲的人民英雄们永垂不朽!由此上朔到一千八百四十年,从那时起,为了反对内外敌人争取民族独立和人民自由幸福,在历次斗争中牺牲了的人民英雄们永垂不朽!
材料二:雄赳赳,气昂昂,跨过鸭绿江!保和平,保祖国,就是保家乡!
请你结合所学知识,回答下列问题: