ulip1998_69 幼苗
共回答了19个问题采纳率：78.9% 举报
1年前
变幻的世界在转 幼苗
共回答了530个问题 举报
回答问题
________is known to all is that china has a larger populatio
1年前1个回答
people with disabilities cover a large part of the populatio
中国是一个人口众多的国家 china is a country which with a large populatio
1年前7个回答
---The "NO.1Document"is designed to help the rural populatio
China is a large country__a large area and a large populatio
1年前2个回答
数学建模人口预测..谁会?3-1 户数、人口、出生、死亡及自然增长 HOUSEHOLDS,POPULATIO
___(lucky),he was not hurt in accident.__?__is the populatio
In the last three or four hundred years the word's populatio
英语翻译A remark by Kingsley Davis,a United Student of populatio
1年前3个回答
单选 American Indian____about fibe percent of the US populatio
it is well-known __ all that China has the largest populatio
英语翻译farmers and fishmen do not make up most of the populatio
1年前6个回答
选择题：____ of China is 1.3 billion.(A.Population B.a populatio
When problems such as energy crisis, pollution and populatio
___ is known to us (is) that China has the largest populatio
1年前5个回答
英语 词形变换80.China is an aging society,with 7% of its populatio
1年前4个回答
When problems such as energy crisis ,pollution and populatio
你能帮帮他们吗
《送东阳马生序》与《与友人书》的道理有那些异同
机不可失的成语接龙不少于6个!必谢!
椭圆,双曲线,抛物线的准线方程分别是什么?
请：√72÷（3√二分之一 ×√12)
sinα =x的α=?用什么公式表示?
精彩回答
用NA表示阿伏伽德罗常数的值，下列有关叙述正确的是（ ）
To improve the quality of our products, we asked for suggestions______ had used the products. [ ]
是故无贵无贱，____________,_____________，师之所存也。（韩愈《师说》）
美国产品影响着我们中国人的生活，如可口可乐、好莱坞大片、麦当劳、肯德基，这些都是我们日常生活中常见的。而在纽约曼哈顿岛上的唐人街，基本上是中餐馆的天下。美国人享受到的不但是美味可口的中餐，还有中国物美价廉的衣服、鞋子、电子产品，中国产品在美国随处可见。
已知数列{an}的通项公式为an=n+1/2的(n+1)次方,求数列前n项和sn
