填空题

The appearance outside the pouch of the next season’s joey signals time for the previous year’s joey to leave and find its own home range.

【参考答案】

Y

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Pap is soft, runny and yummy and becomes joeys’ favorite.

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Well-developed senses of vision and direction and strong forelimbs enable the joey to make its way from the birth canal to the pouch completely unaided.