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[Reading Comprehension]

试题详情

文章:

Line        Resin is a plant secretion that hardens when
 exposed to air; fossilized resin is called amber.
 Although Pliny in the first century recognized that
 amber was produced from “marrow discharged by
(5)trees,” amber has been widely misunderstood to be
 a semiprecious gem and has even been described
 in mineralogy textbooks. Confusion also persists
 surrounding the term “resin,” which was defined
 before rigorous chemical analyses were available.
(10)Resin is often confused with gum, a substance
 produced in plants in response to bacterial infections,
 and with sap, an aqueous solution transported
 through certain plant tissues. Resin differs from both
 gum and sap in that scientists have not determined a
(15)physiological function for resin.
      In the 1950s, entomologists posited that resin
 may function to repel or attract insects. Fraenkel
 conjectured that plants initially produced resin in
 nonspecific chemical responses to insect attack
(20)and that, over time, plants evolved that produced
 resin with specific repellent effects. But some insect
 species, he noted, might overcome the repellent
 effects, actually becoming attracted to the resin.
 This might induce the insects to feed on those
(25)plants or aid them in securing a breeding site.
 Later researchers suggested that resin mediates
 the complex interdependence, or “coevolution,” of
 plants and insects over time. Such ideas led to the
 development of the specialized discipline of chemical
(30)ecology, which is concerned with the role of plant
 chemicals in interactions with other organisms and
 with the evolution and ecology of plant antiherbivore
 chemistry (plants' chemical defenses against attack
 by herbivores such as insects).


题目:

Of the following topics, which would be most likely to be studied within the discipline of chemical ecology as it is described in the passage?

选项:

A、Seeds that become attached to certain insects, which in turn carry away the seeds and aid in the reproductive cycle of the plant species in question
B、An insect species that feeds on weeds detrimental to crop health and yield, and how these insects might aid in agricultural production
C、The effects of deforestation on the life cycles of subtropical carnivorous plants and the insect species on which the plants feed
D、The growth patterns of a particular species of plant that has proved remarkably resistant to herbicides
E、Insects that develop a tolerance for feeding on a plant that had previously been toxic to them, and the resultant changes within that plant species

答案:

E

提问:

请Tina老师解答:麻烦老师帮我纠正这个过程中的错误,如何通过训练避免再犯。本题细节题定位在29到34行,定语从句对discipline of chemical ecology进行解释,预判正确选项应该是定语从句说的内容的例子。大概讲了相互作用,看选项哪个沾边,选了A

解答:

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阅读730
解答: 王文静

提问:

请Tina老师解答:麻烦老师帮我纠正这个过程中的错误,如何通过训练避免再犯。本题细节题定位在29到34行,定语从句对discipline of chemical ecology进行解释,预判正确选项应该是定语从句说的内容的例子。大概讲了相互作用,看选项哪个沾边,选了A

解答:

点赞0
阅读731
解答: 王文静老师

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