TF写作真题第033套（nt006）

NT_006

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综合写作NT 006音频

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The red palm weevil is small plant-eating- beetle that infests and feeds on palm trees, ultimately leading to the trees’. Originally from tropical Asia, the red palm weevil has spread to many different locations in the world, prompting experts to come up with strategies to contain the spread of the troublesome pest.

Destroy infested trees

One strategy to get rid of the weevil is to cut down and destroy palm trees as soon as they show visible signs of infestation. Trees at risk of being infested by weevils should be routinely monitored for symptoms of infestation, such as yellowed leaves or small holes in their trunks, so they can be promptly destroyed if any symptoms are observed. The economic and ecological consequences of weevil infestation have been substantial; detecting and destroying trees showing signs of infestation as early as possible provides the best chance to limit the spread of the pest.

Use traps

Another strategy would be to capture the weevils in insect traps, using pheromone mixture to attract them to the traps. Pheromones, which are chemicals produced naturally by the weevils, play an important role in their reproduction and social behavior. Scientists can produce pheromones artificially. Traps containing a mixture of artificial weevil pheromones and poisonous chemicals could be placed near infested palms; the pheromones in the traps would attract the weevils, and the poison would eliminate them.

Apply pesticides

Finally, ed palm weevils can be eliminated through an application of pesticides hat kill weevils directly. Pesticides can be sprayed on trees, injected into tree trunks, or even infused into the soil, where they will be absorbed by the tree and kill off any weevil population living there.

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