三、还原信息
What's the most interesting plant you've ever seen? If you say the cactus, you're not alone! Many people love cacti because of their special shapes, sizes and characteristics.
1.
A
They can be short and fat, tall and thin, or somewhere in between. Some are no bigger than a coin, while others look like tall green columns (柱子). For example, the largest cactus, the saguaro, can grow up to 20 metres tall and weigh several tons. Some are even named after things they look like, such as the moon cactus, the old man cactus, and rabbit ears. 2.
F
Like camels, cacti can take in a lot of water quickly. 3.
B
The water is stored inside their thick stems. In some kinds of cacti, the water is safe to drink and can help people survive when they are lost in the desert.
Most cacti are covered with amazing protective spines (刺). These spines help them in many ways. They keep animals from eating the plants. 4.
C
Besides protection, the spines also provide some shade for them. This shade helps reduce water loss, which is very important in dry places.
A few kinds of cacti can grow beautiful flowers—but only at certain times. Next time you see a cactus, take a close look. You'll find plenty of surprising and fun facts about it.
A. Cacti come in many different forms.
B. They have large root (根) systems that can collect water after rain.
C. If you've ever touched a cactus, you know how painful it can be.
D. Their roots can grow deep into the ground so that they can get water.
E. The earliest cactus was not found until the 16th century in South America.
F. These interesting names make them even more popular among plant lovers.
