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  3. In dozens of years, there are more cases of the invasion of alien species partly because According to the text, the success of

In dozens of years, there are more cases of the invasion of alien species partly because According to the text, the success of

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问题 In dozens of years, there are more cases of the invasion of alien species partly because
According to the text, the success of invasion lies in the fact that the native plants
选项 A、are unaware of the invasion of alien species.
B、contain more poisonous chemicals.
C、are defeated in plant warfare.
D、may die out in their own habitats.
答案A
解析 本题是细节题。由题干中的success定位至末段，最后两句指出外来植物成功入侵的原因：它不在于一般意义上所认为的那样具有毒性更强的化学物质，而是因为本地掠食者根本没有察觉它们的到来。[A]符合原文，故为答案。[B]是对chemicals concerned are more toxic in any general sense的曲解，这里说的是一般人认为“外来物种携带的化学物质毒性强”，不是native plants，排除。[C]和[D]原文没有提及，为干扰项。
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