People in the United States love their dogs and treat them well. They take their dogs for walks, let them play outside and give them good food and medical care. However, dogs without owners to care for them lead a different kind of life. The expression, “to lead a dog’s life”, describes a person who lives an unhappy life.
Some people say we live in a dog-eat-dog world. That means many people are competing for the same things, like good jobs. They say that to be successful, a person has to work like a dog. This means they have to work very, very hard. Such hard work can make people dog-tired. And, the situation would be even worse if they became sick as a dog.
Still, people say every dog has its day. This means that every person enjoys a successful period during his or her life. To be successful, people often have to learn new skills. Yet, some people say that you can never teach an old dog new tricks. They believe that older people do not like to learn new things and will not change the way they do things.
Some people are compared to dogs in bad ways. People who are unkind or uncaring can be described as meaner than a junkyard dog. Junkyard dogs live in places where people throw away things they do not want. Mean dogs are often used to guard this property. They bark at or attack people who try to enter the property. However, sometimes a person who appears to be mean and threatening is really not so bad. We say his bark is worse than his bite.
Husbands and wives use this doghouse term when they are angry at each other. For example, a woman might get angry at her husband for coming home late or forgetting their wedding anniversary. She might tell him that he is in the doghouse. She may not treat him nicely until he apologizes. However, the husband may decide that it is best to leave things alone and not create more problems. He might decide to let sleeping dogs lie.
Dog expressions also are used to describe the weather. The dog days of summer are the hottest days of the year. A rainstorm may cool the weather. But we do not want it to rain too hard. We do not want it to rain cats and dogs.
To achieve success, you must____________.

A．work like a dog

B．feel dog-tired

C．become sick as a dog

D．be meaner than a junkyard dog

To everyone’s surprise, Jack has been employed by a big company, about which we can say, “_________”.

A．Jack works like a dog

B．Every dog has its day

C．His bark is worse than his bite

D．Jack really lives in a dog-eat-dog world

If you are in the doghouse,_________.

A．you must be forgetful

B．someone is annoyed with you

C．you are living a hard life

D．you can get along with your partner

What kind of people live a difficult life?

A．Those who is in the doghouse.

B．Those who have the dog’s.

C．Those who lead a dog’s life.

D．Those whose bark is worse than his bite.

What does the article mainly talk about?

A．Dogs’ life in America.

B．How to treat dogs well.

C．Why Americans love dogs.

D．Expressions with the word “dog”.

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