In some parts of the world there are large deserts. There are no trees and no water there. Travelers must take food and water with them. The only animal that can walk through the desert is the camel. It can go without food or water for a long time and it can carry heavy things. People call the camel "the ship of the desert". The camel's humps(駝峰)hold fat, and its stomach(胃)holds water in twelve deep pockets. Each pocket has a mouth which closes, and the food does not mix(混合) with the water. When the camel wants some water, it can get it out of the pockets. The camel's food is grass and leaves of trees.

　　根據短文內容,判斷正誤,正確的寫T,錯誤的寫F.(5')

　　( ) 1. Camels can walk through the desert because they don't drink or eat.

　　( ) 2. People call the camels "the ship of desert", because all camels all camels can swim in the desert.

　　( ) 3. All camels have less than three humps.

　　( ) 4. Every camel, even the young, has got twelve pockets in its stomach.

　　( ) 5. Camels eat only grass.