問題詳情


(E) Einstein once said, “ If the bee disappears from the surface of the earth, man would have nomore than four years of life. ” __40__ the startle his prediction may give us, it is highly probable. Ourecosystem relies heavily upon bees. They are responsible for about one in three bites of the food we eat.Having over ten thousand pollen grains __41__ the body hair, each worker bee can pollinate thousandsof flowers a day. __42__ is the rate of its plant pollination that we could not live without it. Otherwise,the crops that __43__ us will suffer, and serious food shortages will follow.However, in recent years bee populations in many places have plummeted __44__ as much as70 percent. Human activity, especially the use of insecticides, is believed to have brought a disastrousimpact on the natural habitats of many animals, one of __45__ without doubt the habitat of bees. __46__bee declines, some species dependent on bees for pollination might become endangered, and the Earth’sbiodiversity is then under great threat. Biodiversity is of great significance. Poor biodiversity will lead tolow genetic diversity and __47__ the biological fitness of a species, thus increasing the likelihood ofextinction. The Great Potato Famine in the 19th-century Ireland is a lesson in history. The disaster wouldnot have claimed one million Irish lives __48__ the Irish set to diversify their staple crop sufficiently.Therefore, if the biodiversity continues to deteriorate, not only will all species in the world haveproblems __49__ , but humankind will be unable to survive.
40.
(A)Thanks to
(B) But for
(C)For all
(D) As regards

參考答案

答案：C[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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