Do you know what are the world’s tallest animals? How do they sleep and drink? You may think it’s difficult for them to sleep, but they have no such problems because giraffes don’t often stop for a snooze (打盹). As they are so tall—males (雄性)can grow up to 18 feet, giraffes actually have the shortest sleep requirement of all mammals (哺乳动物), with an average (平均) of half an hour a day.

1. When they sleep, they seldom lie down and sleep for minutes at a time, since it’s difficult for them to get up again and it’s dangerous in the wild. But the giraffe in the zoo sleeps around 4.6 hours per day, mostly at night. It usually sleeps lying down.

Drinking water may cause problems for the animals 2. because their long necks are too short to reach the ground. To drink they must spread their legs in an uncomfortable position, which makes them easily hunted by other animals like Africa’s big cats. 3. As a result, they get most of their water from the plants that they eat. They only need to drink water every few days.

The most positive (乐观的) person I have ever seen is my dad! He is so positive and kind to me. Unlike most mums and dads, my dad never says things that make me feel bad. He is always there to give me encouragement and help.

When I do wrong things, he always tells me what’s right in a positive way. For example, if I am in trouble, he often tells me to open the books he bought me. Then he asks me to read the story that can help me with the problems I’m facing. After that, we have a discussion together.

Even though I’m not always a good kid, my dad never shouts or gets angry with me. I know that he’s waiting for a day when I grow up and understand things in my life.