【单选题】已知数列{a n }和{b n }都是等差数列,a 1 =25,b 1 =75且a 100 +b 100 =100,则数列{a n +b n }的前10项和是( )
【判断题】数列 1 ,-10,100,-1000,10000...是等比数列吗?
【简答题】由数列1,10,100,1000,…猜测该数列的第n项可能是______.
【单选题】昆山腔可以认为是昆曲的雏形, 被认为是昆山腔之创始人。
【单选题】听力原文: A day after receiving a report on Kosovo's progress toward meeting U. N.-set standards on minority rights and democracy, Secretary-General Annan said he is leaning toward a conclusion that the p...
A.
minority rights and democracy
B.
minority rights and publicity
【简答题】编程输出下列数据,注意第一行的1在第五列位置,最后一行数据后要换行。 1 10 100 1000 10000
【简答题】由数列1,10,100,1000,…猜想数列的第n项可能是________.