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?
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AThere is a considerable degree of variation
in shade of color between weeds of different
species.
分析该选项
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BThe shade of color of some plants tends to
change appreciably over the course of their
growing season.
分析该选项
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CWhen crops are weeded manually, overall
size and leaf shape are taken into account in
distinguishing crop plants from weeds.
分析该选项
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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.
分析该选项
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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.
分析该选项
显示答案
正确答案: D