求解GWD-1-Q33

ymbspy

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.

答案是D.这道题在模拟时选对了，后来越想越晕。这道题应该属于SUPPORT的措施目的类，文中说用机器weeding比人工weeding更省成本，
C说人工weeding不好
D说机器weeding可行
E说有了机器可以使有为weeding duties的农民腾出空做别的事
我觉得CDE都可以是正确答案    希望各位NN帮我讲解一下~

ba1a糖儿

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

不知道这样理解对不对，欢迎批评指正！Thanks♪(･ω･)ﾉ

liebenana

我的理解E选项在说，有了机器人工可以做别的事，所以人工的costs还是不会减少，所以有没有机器对于降低costs没有影响。

xieyutong1988

CE与原文所说的implement machine to reduce labor cost 无关

pygmysog

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. [weed v.s crop plants , this option breaks a catagory]

B.The shade of color of some plants tends to change appreciably (明显地） over the course of their growing season. [weaken]

C.When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds. [i.e, with other terms considered, the prototype is not as effective as manually weeding, weaken]

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. [i.e, the crop plants are easily to be distinguished by prototype]

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. [irrelevant]

我有我的小梦想

C是说当人工作业的时候，overall size和leaf shape都被考虑进去，跟this plan无关；E是说有了机器以后原来负责weeding的这些人可以去干别的duties了，这也跟in favor of this plan无关啊；而D就是支持这个plan了，说只用shade of color而不用其他特征就能适用于所有的plant并economically bred；A和B都只说plant or weed，忽略了二者关系所能导致的implementing plan~~
我是这么理解的~不知道对不对···

ymbspy

C\E没说人工有好处啊   C的意思是说人工WEEDING有很多干扰，E是说有了机器那些原来负责人工WEEDING的农民就可以腾出空去做别的农活  都是在说人工的坏处或机器的好处吧    能否再帮忙解释一下？？

skyemotion

CE都说人工有一定好处。削弱原文。