問題詳情


(B) You probably don’t think very much about ants. You might even believe that the only reason for their existence is to steal food at picnics. Now there is 21 evidencethat these tiny creatures play an important role in ensuring the diversity of plant lifeeverywhere.Researchers recently tracked seed-carrying ants in the Western Cape of South Africa and observed some unexpected behavior. In a process scientists call myrmecochory, some ant species 22 disperse seeds. Since they are attracted to a fleshy substance that surrounds the seeds, the ants take them to their nests where they devour only the fleshy substance. They then discard the seeds unharmed. Dispersing seeds protects them from potential 23 and ensures that they don’t compete in the same area. Another possible benefit is that the ants might improve germination by carrying the seeds to more fertile areas.Scientists have 24 that all of this surprising behavior on the part of ants could25 doubling plant diversification in some areas. The next time you come across a horde of ants, instead of killing them, why not take a moment to remember how valuable they are to the Earth?
21.
(A) compelling
(B) hesitant
(C) marine
(D) fictional

參考答案

答案：D[無官方正解]
難度：困難0.285714
統計：A(7),B(2),C(0),D(4),E(0)

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