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White storks feed on locusts ( ' , 蝗虫) and other insects that can become pests if their numbers get out of hand.
出自-2017年6月阅读原文
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While many birds travelled along well-known routes to warmer climates, others stopped short and spent the winter on landfills, feeding on food waste, and the multitudes of insects that thrive on the dumps.
出自-2017年6月阅读原文
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They help humans kill harmful insects.
出自-2017年6月阅读原文
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They have accelerated the reproduction of some harmful insects.
出自-2017年6月阅读原文
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They are thought to be the only insect that does this.
出自-2014年6月听力原文
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Scientists learn about the monarch butterflies' migration by capturing and placing the identifying tags in the insects.
出自-2014年6月听力原文
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And insect farming also produces far fewer greenhouse gases.
2019年12月六级真题（第二套）听力 Section B
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Now, Africa's largest economy is facing a food crisis as major tomato fields have been destroyed by an insect, leading to a nationwide shortage and escalating prices.
2017年12月六级真题（第一套）阅读 Section A
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The insect, also known as the tomato leaf miner, devastates crops by feeding on fruits and digging into and moving through stalks.
2017年12月六级真题（第一套）阅读 Section A
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The insect, Tutaabsoluta, has destroyed 80% of farms in Kaduna, Nigeria's largest tomato-producing state, leading the government there to declare a state of emergency.
2017年12月六级真题（第一套）阅读 Section A