A:本报《没有苗圃的园丁》一文,报道了宁夏海原县一位代课教师每月只拿50元工资,在没有校舍的情况下挤出自家一间房坚持办学的感人事迹。
B:古人类学家贾兰坡早期及国家文物局近期分别主持的两项重大考古发现表明,永定河这条天然走廊是“古人类移动的路线”。
C:侵入我国的寒潮的路径,不是每一次都一样的,这要看北极地带和西伯亚的冷空气哪一部分气压最高,我国哪一部分气压最低所决定的。
D:在这次民族联欢节中,举行了各种民族体育比赛,主要有赛马、摔跤、抢花炮、赛歌等,丰富多彩的比赛受到来宾的热烈欢迎。
填一填.
____、____、____、____
(Ⅰ)求数列{an}的通项公式;
(Ⅱ)若数列{ 1bnbn+1 }的前n项和为Tn,问使Tn> 10002017 的最小正整数n是多少?
下列关于血液的叙述,不正确的是( )
下列说法中错误的是( )
Hi! I'm Linda. I am ____ English girl. Now I'm in Shanghai with my parents. There is a ____ store next to my house. ____ name is Xingxing Clothes Store. You can buy all kinds of ____ in it. They have sweaters at a very good ____. Do you need bags? They ____ great bags for 26yuan each. They have hats ____ red, black and yellow. They ____ have nice skirts for girls. For ____, they have shorts and sports socks. Do you ____ to come here? Let's have a look this afternoon.