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标题: GWD1-Q33 [打印本页]

作者: yuanyen100 时间: 2008-10-4 16:09
标题: GWD1-Q33

A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color. The inventor of the machine claims that it will reduce labor costs by virtually eliminating the need for manual weeding.

Which of the following is a consideration in favor of the company’s implementing its plan to develop the prototype?

A. There is a considerable degree of variation in shade of color between weeds of different species.

B. The shade of color of some plants tends to change appreciably over the course of their growing season.

C. When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds.

D. Selection and genetic manipulation allow plants of virtually any species to be economically bred to have a distinctive shade of color without altering their other characteristics.

E. Farm laborers who are responsible for the manual weeding of crops carry out other agricultural duties at times in the growing season when extensive weeding is not necessary.

Would anybody tell me why the answer is D

Thanks a lot!!

作者: jh1904 时间: 2008-10-4 16:55
"in favor" means the answer should support the inventor's claim that the prototype weeding machine will reduce labor costs by virtually eliminating the need for manual weeding.

As the machine relies on optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color, the machine would work better if the crop plants have similar shades of color and the weeds have more different shades of color. Or, the weeds have more similar shades of color and the crops have different shades of color.

A. This actually makes it more difficult for the prototype machine if the crop plants are the same.

B. Like A, this makes it more difficult.

C. Irrelevant. The machine works by distinguishing the difference in shade of color.

D. This makes it much easier for the machine. All the crop plants can be genetically altered to have similar shades of color.

E. Irrelevant.

作者: yuanyen100 时间: 2008-10-5 14:59
Thank you

作者: nerakuhs 时间: 2008-11-24 21:09

谁能用中文在解释一下。。。

作者: wellner 时间: 2008-11-25 06:53

大概是这样：现在使用“selection and genetic manipulation "来经济地种植作物，这种方法能使培养出来的几乎所有作物的shade of color 独一无二，而不会改变其他性质。这样一来，这个割草机就轻松了，只要分辨"shade of color" ，该计划也就可行。

（另：真不明白为什么这个选项要牵扯到“selection and genetic manipulation", 难道这是现代种植必用的方法？）

[此贴子已经被作者于2008-11-25 6:56:54编辑过]

作者: Ryang 时间: 2009-4-5 17:04

不好意思，小声问一句，为什么E不对？plan的目的是reduce the labor cost，E说除杂草省下的时间可以做别的，那就是省了labor cost...而D里面说的高科技的冬冬实际上是不能直接strengthen的啊，因为如果农民都不用高科技的冬冬那不就没戏了？

臆测一下...

作者: southnorth 时间: 2009-4-5 19:49
whats wrong with A? Simple.

作者: VivienZheng 时间: 2009-6-29 17:19

"in favor" means the answer should support the inventor's claim that the prototype weeding machine will reduce labor costs by virtually eliminating the need for manual weeding.

A. This actually makes it more difficult for the prototype machine if the crop plants are the same.
B. Like A, this makes it more difficult.
C. Irrelevant. The machine works by distinguishing the difference in shade of color.
D. This makes it much easier for the machine. All the crop plants can be genetically altered to have similar shades of color.
E. Irrelevant.

Thanks, very clear explanation.

作者: elaine1031 时间: 2009-7-16 15:07
up

作者: Journal 时间: 2009-7-20 16:17

我也误选E，把工人时间省下来作别的事情也是reduce labor cost的支持阿

作者: Journal 时间: 2009-7-21 18:51
up

作者: Brilliance 时间: 2009-7-25 13:22
求解

作者: boum 时间: 2009-7-29 11:38
up

作者: xinling917 时间: 2009-8-3 15:54

以下是引用Ryang在2009/4/5 17:04:00的发言：

臆测一下...

因为文中问的是“可行性”：implementing，而不是单纯的profit。而该方法可行应该是要有differences in shade of color。

作者: starbabe 时间: 2009-9-11 14:36
谢谢xinling917的解释

[此贴子已经被作者于2009/9/11 14:36:57编辑过]

作者: Winnieny 时间: 2009-9-19 16:46
D切题，关键就是问这个技术可不可以用。如果技术不可以用，那农名也不能腾出时间去做其他事情啊。

作者: yonglu101 时间: 2009-10-4 16:16
A之所以不对，是因为这个新技术是通过区别weeds和plants不同的颜色来实现的，而不是通过区别不同的weeds的颜色来实现的。

作者: asiaboy888 时间: 2009-10-20 12:49

简单来说，这个机器主要是通过区别weeds和plants不同的颜色来实现的，也就是两者颜色差异越大，机器的作用越好，而事实上weeds和plants是否颜色差异很大文章并未提及，所以D选项放大了两者颜色的差异性，因此D最合适。

作者: slamshady 时间: 2010-4-19 23:27
同问。。。为什么prototype weeding machine 会和Selection and genetic manipulation 有关？实在想不通。。。

作者: sunluning0 时间: 2010-4-21 11:29

我也误选E，把工人时间省下来作别的事情也是reduce labor cost的支持阿

-- by 会员 Journal (2009/7/20 16:17:00)

有人工可以用还要发明这个机器干什么啊。注意问题问的是什么

作者: pigtou 时间: 2010-6-7 11:18
E应该是文中'reduce cost'这一结论成立的assumption,因为如果responsible for weeding的labor无论如何都得养着且不会carry out其他duties, 那么prototype就不能导致reduce cost了. 选D应该是因为题目问得是strengthen,不是assumption

作者: songer_xj 时间: 2010-6-7 16:25

E应该是文中'reduce cost'这一结论成立的assumption,因为如果responsible for weeding的labor无论如何都得养着且不会carry out其他duties, 那么prototype就不能导致reduce cost了. 选D应该是因为题目问得是strengthen,不是assumption

-- by 会员 pigtou (2010/6/7 11:18:48)

如果是原文的assumption，其实可以归为支持类的。看选项，首先看相关还是非相关，然后在相关选项中看是支持还是削弱。E选项有点答非所问，而且并不能明显说明reduce cost.

作者: merryrq0209 时间: 2010-7-22 22:00
我觉得楼上51xt说得很有道理

作者: 雨潇 时间: 2010-8-26 11:33

E选项是削弱：如果人工就是干除草活的，那么这个机器代替人干了除草活以后，当然可以节约成本。E提出，那些除草的人其实还要干别的活的，也就是说即使用了机器还是少不了人，（尽管有可能稍有减少）不能真正reduce labor cost.

-- by 会员 51xt (2010/7/17 12:24:57)

其实E是无关选项，管他农民在这期间干不干别的活，关键是除草这件事情不用人工去做了就可以，至于由于除草省下来的时间是睡觉，看书，还是干别的，都与使用了除草机无关。
D对是因为加强了，是由于Selection and genetic manipulation使得植物都有独特的shade of color，这不正是使用除草机的原理吗？distinguish weeds from crop plants by differences in shade of color，所以说明除草机可行！

作者: jbc88 时间: 2010-10-21 16:02
选E的同学好好看下问题，说下列那个归因使得这个计划要执行？

这个计划的针对是就以小的成本除草。

而E，说农民利用这个机器省出时间去做别的。这个和除草其实无关。

选E的人都是被最小成本给迷惑了。

作者: pigyiyi 时间: 2011-1-17 20:53
E是reduce labor cost的表现，或者说一个结果

作者: 像风一样离去 时间: 2011-6-2 19:13

-- by 会员 asiaboy888 (2009/10/20 12:49:00)

一语惊醒梦中人

作者: Crystaljoy 时间: 2011-10-26 20:22

-- by 会员 asiaboy888 (2009/10/20 12:49:00)

一语惊醒梦中人

-- by 会员像风一样离去 (2011/6/2 19:13:59)

Agree

作者: xingmic15 时间: 2011-12-26 16:22
厉害！我也错选了E

作者: richardliu6 时间: 2013-7-27 17:48
E说的是全年的考虑：不割草时可以干别的。所以无关。

作者: Suziee 时间: 2015-5-19 16:18
Thansk for sharing, and well noted about this question.

作者: iatow 时间: 2015-8-6 22:45

jh1904 发表于 2008-10-4 16:55
"in favor" means the answer should support the inventor's claim that the prototype weeding machine w ...

看一下！

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