阅读理解。 Cold weather can hard on pets, just like it can be hard on people. Sometimes owners forget that their cats are just as used to the warm shelter (住所) as they are. Some owners will leave their animals outside for a long period of time, thinking that all animals are used to living outdoors. This can put their pets in danger of serious illness. There are things you can do to keep your animal warm and safe. Keep your pets inside as much as you can when the weather is bad. If you have to take them out, stay outside with them. When you're cold enough to go inside, they probably are too. I you must leave them outside for a long time, make sure they have a warm, solid shelter against the wind, thick bedding, and plenty of non-frozen water. If left alone outside, dogs and cats can be very smart in their search for warm shelter. They can dig into snow banks or hide somewhere. Watch them closely when they are left outdoors, and provide them with shelter of good quality. Keep an eye on your pet's water. Sometimes owners don't realize that a water bowl has frozen and their pet can't get anything to drink. Animals that don't have clean and unfrozen water may drink dirty water outside, which may contain something unhealthy for them. 1. What do we learn about pets from Paragraph 1? A. They are often forgotten by their owners. B. They are used to living outdoors. C. They build their won shelter. D. They like to stay in warm places. 2. Why are pet owners asked to stay with their pets when they are out in cold weather? A. To know when to bring them inside. B. To keep them from eating bad food. C. To help them find shelters. D. To keep them company. 3. If pets are left on their own outdoors in cold weather, they may ___. A. run short of clean water B. dig deep holes for fun C. dirty the snow nearby D. get lost in the wild 4. What is the purpose of this text? A. To solve a problem. B. To give practical advice. C. To tell an interesting story. D. To present a research result.