A box contains apples, a box contains pears, and a box contains both apples and pears. But a careless person put all three labels on the wrong boxes. Now it is required to take only one fruit from one box (without seeing the fruits inside the box) to correct all the labels. The fruit should be taken from the box labeled $\qquad$ - label.
【Analysis and Solution】Logical Reasoning.
If a pear is taken from the box labeled "apple", then the box labeled "apple" may contain pears or both apples and pears; if an apple is taken from the box labeled "pear", then the box labeled "pear" may contain apples or both apples and pears; therefore, taking a fruit from the box labeled "apple" or "pear" cannot determine the correct labels of the three boxes. If a pear is taken from the box labeled "apple and pear", then the box labeled "apple and pear" actually contains pears; the box labeled "apple" actually contains apples and pears, and the box labeled "pear" actually contains apples; if an apple is taken from the box labeled "apple and pear", then the box labeled "apple and pear" actually contains apples; the box labeled "pear" actually contains apples and pears, and the box labeled "apple" actually contains pears; therefore, a fruit should be taken from the box labeled "apple and pear".