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[原始] 10月11号换题库,记录一下我记得的题目

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楼主
发表于 2013-10-11 16:08:59 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
1. 数学:
1) 定义:a(K)=7K, 10^n可以除以 a(1)a(2) a(3)a(4) a(5) a(6)……a(28),求n,选项有A. 8,B.7,C···  (后面选项不记得了)
我选了7,不知道,对不对,数字应该正确

2)
还有一道题目DS是这样的,求n, 给出的条件是:
(1)        11^n的十位数是4
(2)        5^n的百位数是6
因为(1)和(2)中的4和6随着n的变大,都是可以重复出现的,所以我不确定是否会有多个n满足这样的情况,至少当n=4的时候,(1)+(2)是可以满足的,但是最后还是选了E

3) 有三个圆,1个小圆C(圆心定义为C,半径为r),2个大圆B&圆A(圆心定义为B, A,半径都为R),其中圆B&圆A分别与圆C相切,切点分别为D&E,其中角BAC是直角,求什么来着,给忘了,唉~~~残狗一只。

4)有一个圆(半径是r),中间被挖掉了一个一个120°的部分,就是剩下的是一个2/3个圆形,问这个2/3的圆折叠成圆锥(中间没有重合),那么圆锥的高是多少。(用2/3这个圆的周长=圆锥的周长就可以求出来)

AWA:
Our total sales have increased this year by 20 percent since we added a pharmacy section to our grocery store. Clearly, the customer’s main concern is the convenience afforded by one-stop shopping. The surest way to increase our profits over the next couple of years, therefore, is to add a clothing department along with an automotive supplies and repair shop. We should also plan to continue adding new departments and services, such as a restaurant and a garden shop, in subsequent years. Being the only store in the area that offers such a range of services will give us a competitive advantage over other local stores.


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沙发
发表于 2013-10-11 16:19:55 | 只看该作者
板凳
发表于 2013-10-11 16:24:05 | 只看该作者
第二题那个5^n的百位数是6 当n=4的时候是600 n>=5的百位数不就都是0了么。。。还是我想错了。。求指教啊
地板
 楼主| 发表于 2013-10-11 16:25:15 | 只看该作者
fan850925 发表于 2013-10-11 16:19
楼主 求点阅读 关键词 我是阅读酱油君 饭饭

我阅读真的很差,脑中空空,记得碰到一道讲“super earth”,各种mantle, atmosphere之类的,不记得了
5#
发表于 2013-10-11 16:30:00 | 只看该作者
请楼主帮忙看看是不是这篇作文题目

Our total sales have increased this year by 20 percent since we added a pharmacy section to our grocery store. Clearly, the customer’s main concern is the convenience afforded by one-stop shopping. The surest way to increase our profits over the next couple of years, therefore, is to add a clothing department along with an automotive supplies and repair shop. We should also plan to continue adding new departments and services, such as a restaurant and a garden shop, in subsequent years. Being the only store in the area that offers such a range of services will give us a competitive advantage over other local stores.
6#
 楼主| 发表于 2013-10-11 16:31:21 | 只看该作者
lily930430 发表于 2013-10-11 16:24
第二题那个5^n的百位数是6 当n=4的时候是600 n>=5的百位数不就都是0了么。。。还是我想错了。。求指教啊 ...

n=5的时候是625,百位数是6
7#
 楼主| 发表于 2013-10-11 16:34:41 | 只看该作者
meishiba 发表于 2013-10-11 16:30
请楼主帮忙看看是不是这篇作文题目

Our total sales have increased this year by 20 percent since we ad ...

对的,就是这个,这个是哪儿摘的啊?
8#
发表于 2013-10-11 16:36:22 | 只看该作者
一站式服务那篇作文,题库44
9#
发表于 2013-10-11 16:37:58 | 只看该作者
tess2086347 发表于 2013-10-11 16:31
n=5的时候是625,百位数是6

啊。。对对对。。我怎么想到600去了。。感谢!
10#
发表于 2013-10-11 16:40:07 | 只看该作者
顶!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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