Although when a hagfish is threatened, it will secrete slime that is small in quantity, it expands several hundred times as it absorbs seawater, forming a slime ball that can coat the gills of predatory fish and either suffocate them or distress them enough to make them flee.
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AAlthough when a hagfish is threatened, it will secrete slime that is small in quantity,
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BAlthough a small quantity of slime is secreted by the hagfish, when threatened
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CAlthough, when threatened, a hagfish will secrete slime that is small in quantity,
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DAlthough the slime secreted by a threatened hagfish is small in quantity,
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EAlthough the hagfish secretes a small quantity of slime when threatened,
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正确答案: D