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- 1another,other有什么区别?
- 2已知无穷等比数列{an}的前n项和为Sn,各项的和为S,且limn→∞(Sn−2S)=1,则其首项a1的取值范围是( ) A.(-1,0)∪(0,1) B.(-2,-1)∪(-1,0) C.(0,1)∪(1,2) D.(-2,0)∪(
- 3根号-16等于?
- 4青菜萝卜共1600kg,已知青菜的质量是萝卜的60%,后来又来一批青菜,这时萝卜青菜的质量比3:4.这个菜场后来又运来青菜多少千克?
- 5he love to play with my classmates.这句话有错吗
- 6The children often help____(帮助) in their study.
- 7学校中、高年级同学去植树,高年级植了总棵数的60%多120棵,中年级植的是高年级的1/3,这批树苗有多少棵?
- 8tell me why?is this your answer?then why you choose me?
- 9Can robots do good things or bad things __1__ us different people have different __2__ ,some people think roots can make
- 10根号16的平方根为什么是正负2呀?不是应该是正负4吗