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  3. It is futile to try to destroy pests completely with chemical poisons, for as each new chemical pesticide is introduced, the ins

It is futile to try to destroy pests completely with chemical poisons, for as each new chemical pesticide is introduced, the ins

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问题 It is futile to try to destroy pests completely with chemical poisons, for as each new chemical pesticide is introduced, the insects gradually become______to it.
选项 A、drawn
B、vulnerable
C、resistant
D、indifferent
答案C
解析 本题考查形容词辨析。逗号前的句子提到“试图用化学毒药完全清除害虫是徒劳的”，由此推断，每次使用新的化学杀虫剂，昆虫都会逐渐产生抗体，这也是无法根除的原因，故答案为resistant(抵抗的，抗……的，耐……的)。drawn意为“(人或人脸)清瘦的，憔悴的”。vulnerable意为“易感染(某种疾病)的，易患病的；脆弱的；易受影响的”。indifferent意为“冷漠的，不关心的，不积极的；(水平或质量)一般的，平庸的”。
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