谁能告诉我 下面这段话的 conclusion
Plant scientists have used genetic engineering on seeds to producecrop plants that are highly resistant to insect damage. Unfortunately,
the seeds themselves are quite expensive, and the plants
require more fertilizer and water to grow well than normal
ones. Thus, for most farmers the savings on pesticides would not
compensate for the higher seed costs and the cost of additional
fertilizer. However, since consumer demand for grains, fruits,
and vegetables grown without the use of pesticides continues
to rise, the use of genetically engineered seeds of this kind is
likely to become widespread. OA 是第一句话 你问的是什么？ Plant scientists have used genetic engineering on seeds to produce
crop plants that are highly resistant to insect damage. 【Unfortunately,
the seeds themselves are quite expensive, and the plants
require more fertilizer and water to grow well than normal
ones】. Thus, for most farmers the savings on pesticides would not
compensate for the higher seed costs and the cost of additional
fertilizer. 【However, since consumer demand for grains, fruits,
and vegetables grown without the use of pesticides continues
to rise, the use of genetically engineered seeds of this kind is
likely to become widespread.】
括号中文字的作用
OA：第一句是支持结论的证据 第二句是反对结论的证据 [url]http://bbs.taisha.org/thread-1316782-1-7.html[/url]
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