[問題] 天山 4-13

[mathloving (煩)]

Certain genetically modified strains of maize produce a powerful natural
insecticide. The insecticide occurs throughout the plant, including its
pollen. Maize pollen is dispersed by the wind and frequently blows onto
milkweed plants that grow near maize fields. Caterpillars of monarch
butterflies feed exclusively on milkweed leaves. When these caterpillars are
fed milkweed leaves dusted with pollen from modified maize plants, they die.
Therefore, by using genetically modified maize, farmers put monarch
butterflies at risk.


Which of the following would it be most useful to determine in order to
evaluate the argument?


C. Whether monarch butterfly caterpillars are actively feeding during the
part of the growing season when maize is releasing pollen.


D. Whether insects that feed on genetically modified maize plants are likely
to be killed by insecticide from the plant’s pollen.

E. Whether any maize-eating insects compete with monarch caterpillars for the
leaves of milkweed plants growing near maize fields.


這三個選項在猶豫

C 即使不是也不代表絕對不吃沒危險阿

D 說到 insects 範圍好像變大了

E 即使有別的競爭者 也不代表不吃阿

這題答案不確定


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推 suade0904:我記得我昨天有寫解釋阿，莫非太冷我傻了XD
→ suade0904:這題是C因為如果C是not可以完全否定
→ suade0904:D.E的insects都不能完全指定題目中的那種蟲
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