OG19新题（也是GWD-10老题），新解题思路不知对否，请NN指点！

ba1a糖儿

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?

• AThere is a considerable degree of variation in shade of color between weeds of different species.
• BThe shade of color of some plants tends to change appreciably over the course of their growing season.
• CWhen crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds.
• DSelection 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.
• EFarm 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.
  

OA D （←选中可见答案）
我的笔记

这道题明显找不到premise和conclusion，只能知道conclusion是推崇mechain的使用，并提出了mechain的优点
可不可以看做是manual（labor）和mechain的对比？如果conclusion要选择mechain，那么 L和M的对比中，答案要体现
1）M的优势 （和题目给出的M的特征相关） 2) L的劣势。
错误选项的特征：
1）M的劣势 2）L的优势 3）有某个特征，但是L和M都受影响4）只提L的特征，不提M与之相关的情况
AB。杂草间性状不同、会变化- 可以理解的角度①对M和L都会有影响②变化越多，根据背景信息，M通过性状来辨认，M的工作越复杂越麻烦，但是不能看出来更省钱-可能对M是劣势
C。manually（L）的信息，可能在说①L效益更高（L的优势）②并没有提到与M的对比（相比之下M的劣势），从而不知道是否影响M的好坏
D。提到了M的特征（出现在背景中-靠分辨...），该特征对M有益
E。理解的角度①提到了L的好处②如果除草还需要￥付给labor，成本多了/不在讨论范围内了



这样考虑不知道对不对呢？这道题实在看不出premise和conclusion了，只知道M用起来会省钱，题目也是支持M的..
欢迎NN们指点呀！！感激不尽

ba1a糖儿

bump~~~

kluivert

premise : distinguish weeds from crop plants by differences in shade of color
Result : will reduce labor costs by virtually eliminating the need for manual weeding.
问加强... 就是确保机器的确能准确区分杂草 和 粮食
d 选项直接说新科技可以控制shade of color而不破坏粮食本身，完全符合题意啊
A 直接没关系或者说是削弱，杂草怎么样是杂草的事情，重点是杂草shade of color和粮食的区别 ...杂草即便有一百万种shade of color，如果可以轻易和粮食的区分，那都不是问题啊...说它削弱是杂草shade of color多样性造成更难区分和粮食的shade of color
b 直接削弱了！说粮食的shade of color会变化，那区分难度就加大了，起到削弱作用
c 说手动除草,,, 无关
e 工人还要同时做其他工作，当大量除草没必要的时候... 和主题毛关系没有

我们只在乎他的机器到底行不行

ba1a糖儿

kluivert 发表于 2018-8-17 12:50
premise : distinguish weeds from crop plants by differences in shade of color
Result : will reduce l ...

感谢！

westminster

可以把这个当作是考察方案的可行性：
方案：use the wedding machine
目标: get rid of weeds by using the machine

题目中说了，这个机器除草的原理是靠differences in shades of colours
因此，如果方案成不成就要看differences in shades of colours可能不可能。那么在选项中唯一提到这个的就是D了，而且仔细看的话就会发现，如果shades can be manipulated, then 'differentiating shades of colours' is practical.
Then the proposal is good.
If shades of colours are not controllable, then machines are not usable.
D.

ba1a糖儿

westminster 发表于 2018-8-22 01:36
可以把这个当作是考察方案的可行性：
方案：use the wedding machine
目标: get rid of weeds by using the ...

同意！感谢您朋友~~
看作是措施-目的型的确清晰明了了许多~~
CE对措施不友好排除  AB和措施/措施的具体特性无关，D正如您所说，机器除草的原理是靠differences in shades of colours 。
当时对OG解析还不太明白现在清楚许多啦~~谢谢