One hot day, two hikers are walking in the dry（干的） brown hills（小山）. They have been walking all day, and they are tired and hungry. They see a tree in the distance（距离）. "I am so hungry," says one hiker. "Do you think that's an apple tree? I want a big, crunchy, red apple." "Nah, that's not an apple tree," says the other.

  "It's a pear tree. Pears are my favorite. I want a sweet（甜的）, juicy（多汁的）, yellow pear." But when they arrive at the tree, there are no apples or pears either（也(不)）.