题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-17841.png)
A.25 | B.576 | C.624 | D.625 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-17841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-77237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-25683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-25683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032830-90698.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032829-77237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032830-91049.png)
核心考点
举一反三
(1)试问,从2002年起到哪一年西部地区基本上解决退耕还林问题?
(2)为支持退耕还林工作,国家财政补助农民每亩300斤粮食,每斤粮食按0.7元计算,并且每亩退耕地每年补助20元,试问到西部地区基本解决退耕还林问题时,国家财政共需支付约多少亿元?
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032135-19297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032136-89006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032136-84355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032136-12257.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032135-19297.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032136-36456.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032137-44388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032137-87012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032137-44388.png)
(3)设
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032137-47611.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032137-79169.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032113-14255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-56530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-18422.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-56530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-65215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-29276.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-42264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032115-10477.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032113-14255.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032115-87410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032115-52055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032114-56530.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032115-89929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-98996.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-38807.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-32011.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-91555.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-37938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032100-98996.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032101-78385.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032101-95882.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032101-17354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032026-97839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032026-66507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032026-90503.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-89831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-18245.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-43038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-96148.png)
(1)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032026-97839.png)
(2)求数列
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-89831.png)
(3)求
![](http://img.shitiku.com.cn/uploads/allimg/20191015/20191015032027-64434.png)
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