简单对话:(自然篇) 5. Bees
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    A: Why are you spraying pesticides?

    B: To kill the insects in the garden.

    A: Not all insects are bad.

    B: They are ruining my vegetables.

    A: You should buy the right kind of poison.

    B: What do you mean?

    A: Some poisons kill bees.

    B: That's alright. Bees sting people.

    A: Without bees, your garden will not have fruit.

    B: Why is that?

    A: Bees pollinate the flowers so fruit can grow.

    B: Help me pick out a pesticide that is safe for bees.

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