[原创]7月20日北美JJ

ruah

终于考掉了，松一口气

Q51/V42/T760

AA: “This past winter, 200 students from Waymarsh State College traveled to the state capitol building to protest against proposed cuts in funding for various state college programs. The other 12,000 Waymarsh students evidently weren’t so concerned about their education: they either stayed on campus or left for winter break. Since the group who did not protest is far more numerous, it is more representative of the state’s college students than are the protesters. Therefore the state legislature need not heed the appeals of the protesting students.”

 

 

AI: “Scientists are continually redefining the standards for what is beneficial or harmful to the environment. Since these standards keep shifting, companies should resist changing their products and processes in response to each new recommendation until those recommendations become government regulations.”

 

Math:

老JJ: 7, 17 (115), 29 (59, 63, 79, 127), 53, 55, 56, 69, 67, 84 (103), 95 (117), 162, 188, 189, 194 (102, 我遇到的题目与194相同, 选A),

有六个公司各派三个代表开会握手次数的题目, 一下没找到题号

根据两组绝对值关系判断S是否在RT中间, 此题在本月机经中已出现多次, 而且变化多端, 只有考试现场仔细看了

 

补充说明老JJ的:

43. 求: (根号(11^3*14)+ 根号(11*14*3))/根号(11^3*14*3)=? (1/11+1/14)

81. W与Z是两个盒子, 里面放着红棍子与白棍子. 所有红棍子的长度都一样, 比W盒子里的所有棍子平均长度长6, 比Z盒子里的所有棍子的平均长度短18. 问Z盒子里的棍子的平均长度比W盒子里的所有棍子的平均长度长多少?

131. 我遇到的题目的数字不一样, 题目的难处在于文字体的句子长而且绕口, 读清除题目, 画个图应该做得出的. 题目应该是个田径场跑道的形状.

152. 本题说P是六十多, 问p^4的个位数为几? (1) P is odd; (2) p的个位数不是5. (C, 可以确定个位数不是5的任意奇数的4次方个位数都是1)

 

新JJ:

m和n都是正整数, 1800m=n^3, 问m最小是多少? (15)

 

一个圆x^2+y^2=10, (r, s)是该圆上的点, r和s都是整数，问有几对(r, s)? (8)

 

f(x)是定义在实数上的函数, 问f(x^2)<=(f(x))^2吗?

(1) f(x)<=0; (2) 如果x>=0, f(x)=-x, 如果x<0, f(x)=x. (D)

 

反正花了一堆钱, 好多笔的, 问range是否大于$500 (数字不确定)?

(1) median是$1,000 (数字不确定); (2) standard deviation是$500 (数字不确定)

这道题目吃不准. 单独(1)是肯定不行了，range和median没有直接联系. (2)的话standard deviation跟range倒还有一拼，但是影响standard deviation的变数实在太多. 所以考试的时候蒙了一个E.

 

1900年人口76 million, 4%是老人. 1990年人口249 million, 12是老人. 问老人的百分比增长了多少? (900%, 这是选项, 本题要靠估算而不是求精确值)

 

(5*根号(10)+ 根号(50))^2最接近下列那个数字? (我的选项是500, 看来估算很重要)

 

(再来估个简单的) (10^10-1,000)/(10^11+1)=? (0.1)

 

a和b都是整数, 又1<a<b, 问
    a和b是多少? (1) a+b=12; (2) a*b=35. (B)

 

某物体积1,435,600立方毫米, 折合成多少立方米? (1毫米=0.001米) (0.0014356)

 

直角三角形的斜边长为10厘米, 问周长几厘米? (1) 该直角三角形的面积为25平方厘米; (2) 这是个等腰直角三角形. (D)

 

某物的损耗成本符合Y=350,000m/(250-2.5m). 已知100,000<Y<200,000, 问m可能为下列何值? (解不等式得出m的范围, 我的选项为49)

 

k是一个三位数的百位数, 问k是几？(1) k是两个两位数之和; (2) k是两个两位数之积. (A)

 

(本提好像在本月机经中见过, 不管怎么样，宁滥勿缺) w不等于1, 问w^2/(w-1)>w吗? (1) w不是整数; (2) w>0. (E)

我的做法不一定最简单, 但还挺清楚, 不妨参考一下:

将w^2写成(w-1+1)^2=(w-1)^2+2(w-1)+1, 除以w-1后为w-1+2+1/(w-1). 去掉问题中不等号两边的w, 就是判断1+1/(w-1)是否>0. E 就明显了.

 

好多成员在好多小组里, W代表至少属于其中的一个小组, B代表同时属于成员最多的两个小组, H代表属于成员最多的两个小组任意一个, 让从一堆子集关系中挑几个正确的. (反正到现场看题目就是了)

 

Verbal:

RC:

1. 好像没见过, 是新的. 各国控制污染的条款与农作物的生产与出口有关. 文章调查了与污染最密切相关的作物, 发现它们对农作物出口没什么影响, 因为它们的产量与出口量都不大. 而好些其它因素对农作物出口才有更大的影响.

(三个问题里有一个问了削弱, 选的是控制污染的条款对产量与出口量大的作物有最大影响)

2. 佛教那篇

3. pond和蝌蚪那篇

4. 二氧化碳和冰层雪地的关系. 举例了Wyoming的雪地情况来反驳常见的观点.

文章中间两篇长, 前后都短. 问题倒都挺长的, 有的问题满满一屏, 比文章还长

 

SC:

1. 第一题与timsky2000遇到的一样

2. US mint coin

3. 吃不准GWD的版本, 贴上句子的头上几个字. GWD9-17: Fossils of the arm of a sloth found in Puerto Rico in 1991 ...

 

CR:

1. 辐射杀菌破坏维他命B与cook比较那题

2. GWD13-32: Macrophages are cells that play a role in the response of the immune system of mice …

3. 廉颇附加帖里讨论的加油站问题, 个人支持选B.

mba06

恭喜。LZ好幽默。

马尔代夫

感谢分享！

HoneyMilk

谢谢LZ！！！

廉颇附加贴的说。。。。哈

马尔代夫

1.        GWD-5-Q30:

Which of the following most logically completes the argument?

 

The irradiation of food kills bacteria and thus retards
            spoilage.  However, it also lowers the nutritional value of many foods.  For example, irradiation destroys a significant percentage of whatever vitamin B1 a food may contain.  Proponents of irradiation point out that irradiation is no worse in this respect than cooking.  However, this fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since _______.

 

1. many of the proponents of irradiation are food distributors who gain from food’s having a longer shelf life

2. it is clear that killing bacteria that may be present on food is not the only effect that irradiation has

3. cooking is usually the final step in preparing food for consumption, whereas irradiation serves to ensure a longer shelf life for perishable foods

4. certain kinds of cooking are, in fact, even more destructive of vitamin B1 than carefully controlled irradiation is

5. for food that is both irradiated and cooked, the reduction of vitamin B1 associated with either process individually is compounded

食物的放射能杀死细菌由此来延缓腐坏。然而，它也降低了食物的营养价值。比如，放射破坏大量食物里能含有的维生素B1。支持者指出，放射不比烧煮食物能破坏更多的维生素B1。然而这个事实是没有意义的，由于很多的放射食物是生吃的，或者这个事实是会导致错误理解的

louisalz

谢谢分享，发现一个规律，分数比较猛的ＮＮ一般都能记住好多ＪＪ回来。可能是由于思路太清晰了吧。

马尔代夫

以下是引用louisalz在2006-7-21 14:29:00的发言：
谢谢分享，发现一个规律，分数比较猛的ＮＮ一般都能记住好多ＪＪ回来。可能是由于思路太清晰了吧。

加上心情也好，呵呵

yilan

又牛又nice，记忆力超强，幽默感颇丰，admire！

scujean

感謝