Cactuses(仙人掌)live in dry areas. They may not get much water where they live. The cactus' long roots lie near the surface of the ground. They can get water from desert rains. And since the roots have bark (皮)covering them, they can absorb the water fast. Because the cactus has no leaves, it seems to do the job of making food for the plant and of storing it than out, not much of the plant faces the direct drying sunlight. These broad stems have a great deal of room for storing the water and a thick covering for protecting it. The plant's sharp, pointed needles (针) keep animals from sucking its liquid. However, cactus plants have saved the lives of people in the desert. _________of the cactus take in water.