Cold weather can be 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     1     they are. Some owners will leave their animals outside for a long period of time,     2    (think) 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. If you must leave them outside for a long time,     3    (make) sure they have a warm, solid shelter     4     the wind, thick bedding, and plenty of non-frozen water.

If     5    (leave) alone outside, dogs and cats can be very smart in     6    (they) search for warm shelter. They can dig into snow banks or hide somewhere. Watch them     7    (close) when they are left outdoors, and provide them with shelter of good quality. Keep     8     eye on your pet’s water. Sometimes owners don’t realize that a water bowl     9    (freeze) and their pet can’t get anything to drink. Animals that don’t have clean and unfrozen water may drink dirty water outside,    10     may contain something unhealthy for them.

【推荐3】Each zebra has its own unique pattern of distinctive stripes (带), just     1    humans have their own unique pattern of fingerprints, Zebras stick together in herds (兽群). Within a herd, zebras tend     2     (stay) together in smaller family groups. Families are generally made up of a male, several females,     3    their young.

As zebras graze, they use their sharper front teeth to bite the grass, and then use their duller back teeth to crush and grind. A zebra’s teeth keep growing for     4     (it) entire life, because constant chewing     5     (wear) them down.

Zebras are    6     (constant) on the move to find fresh grass and water. Sometimes they gather in huge herds of thousands as they migrate to better feeding    7     (area). They often travel in    8     (mix) herds with other grazers and browsers, such as wildebeest.

Zebras groom (理毛) one another, If you see two zebras standing close    9     each other and it looks like they’re biting each other, don’t worry. They’re pulling loose hairs off each other as they groom. Grooming also feels good to a zebra—it’s like having an itch scratched,

While most zebras are least endangered, Grevy’s Zebra     10     (classify) as endangered.