7 . We should all have at least one fire extinguisher somewhere in our home, but it’s not enough to simply keep one under the kitchen sink. If there is a fire, your safety — and the safety of your home — depends on knowing how to use that fire extinguisher correctly. In case your fire extinguisher has been sitting around collecting dust, here’s everything you need to know before brushing it off and fighting a fire in your home the right way.

Choose the right fire extinguisher

The first thing you need to know is the different classifications of fires. Most household fires fall into one of the following categories:

Class A: Fires fueled by solid combustibles like wood, paper, and cloth.

Class B: Fires fueled by flammable liquids such as oil and gasoline.

Class C: Fires started or fueled by faulty wiring and appliances.

Class D: Fires started or fueled by cooking oils, animal facts, and vegetable fats.

All fire extinguishers are labeled to indicate which classes of fire they are designed to combat. Most household fire extinguishers are considered multipurpose and labeled for use in A, B, and C classes. Class K extinguishers are heavier duty and will need to be bought separately. Household fire extinguishers are also rated for the size of fire that they can safely handle. The higher the rating, the larger the fire the extinguisher can put out. Higher-rated extinguishers are often heavier.

Steps for proper extinguisher use

Once you understand the different types of fire extinguishers and their uses, you need to be able to properly operate one.

Step 1: Identify a clear exit/escape route

Before operating the fire extinguisher, make sure you have a clear evacuation path. If you cannot put out the fire, you’ll need to make a safe exit. Also, make sure everyone else is being evacuated from the building.

Step 2: Call the fire department

Even if the fire appears manageable, you should always have the fire department on the way. Once firefighters arrive, they can double-check whether the fire has been completely extinguished.

Step 3: Stand back

Face the fire and keep your back to the clear exit. You should stay between 1.8 and 2.5 meters away from the flames as you prepare to operate the fire extinguisher.

Step 4: Operate the extinguisher

It can be difficult to think clearly during an emergency. Thankfully, there is a long-standing acronym(首字母缩略词)— PASS — to help you recall the steps involved in operating your fire extinguisher.

P: Pull the pin (保险销) on the fire extinguisher.

A: Aim low. Point the nozzle at the base of the fire instead of the flames.

S: Squeeze the handle or lever to discharge the extinguisher.

S: Sweep the nozzle back and forth until the flames are extinguished.

Step 5: Keep an eye on things

After the flames appear to be out, continue to watch the fire area to make sure it doesn’t reignite. If the fire does start up again, repeat the “PASS” process.

Step 6: Get to a safe place

Once the fire is out, or if you are unable to put it out, leave the scene. Find a place out of reach of the fire.

1. According to the passage, what is the top priority in a fire emergency?

A．Find out how to escape.	B．Operate a fire extinguisher.
C．Call the fire department.	D．Escape and leave everything behind.

2. The following pictures show the four steps of the “PASS” process. According to the passage, what is their correct order?

A．③②④①	B．④②③①
C．③④①②	D．④③①②

3. According to the passage, after a fire appears to have been extinguished, we should _________.

A．leave the fire area at once	B．repeat the “PASS” process
C．inspect the fire area carefully	D．have the fire department on the way

8 . What Is Your Pet Trying to Tell You

Animals want our attention, and sometimes they’re quite obviously about asking for it. Unusual behaviors are often our pets’ way of telling us to stop what we’re doing and play with them. It’s why Fido constantly chases his tail and why Kitty keeps rolling around. A desperately bored pet may have “bad” behaviors to get a reaction-even a negative one!

Feed me.

Sure, your dog loves you, but that’s not why he’s licking(舔)your face. A puppy learns to lick his mother’s mouth to get a little leftover food, so Spot isn’t kissing you in our sense of the word; he just wants a snack.

I’m stressed.

Cat owners also misinterpret their furry friends’ kisses. While a cat might lick you to show love, sometimes she’ll do it to ease herself. One way to tell if her licking is stress-related is to see if it goes on for an extended period of time. Birds also overclean when they feel anxious. Some will even drag out their own feathers.

My tail tells all.

Dogs wag(摇)their tails to the right when they see something or someone they want to approach, and to the left when they see something they want to avoid. When frightened, dogs curl their tails in, while cats wrap theirs around themselves. And if a cat’s tail looks like a question mark, she’s eager to play.

1. What does a dog show if it kisses its owner?

A．Hunger.

B．Love.

C．Fear.

D．Sadness.

2. How many kinds of pets are mentioned in the text?

A．Two.

B．Three.

C．Four.

D．Five.

3. What will happen if birds get anxious?

A．They will drag others’ feathers.

B．They will approach someone they like.

C．They will clean their feathers more than necessary.

D．They will stare at their owners for a longer time.

10 . People use laughter to connect and bond with others. It’s how we tell friends that we find their jokes funny, or how kids in a park show that they are having fun. Laughter is so important to humans, even if they belong to different cultures or speak different languages. What about animals? Scientists are studying if there is a connection between animals’ laughing and playing.

Sasha Winkler, from the University of California, Los Angeles (UCLA), studies biological anthropology (人类学)，including the study of animal behavior. She noticed that the small monkeys she worked with, liked to play together by chasing each other. While having fun together, they made panting (喘气) sounds, almost like they were out of breath, which reminded Winkler of their quiet laughter. This made Winkler wonder whether other animals did so while they were playing.

To find out whether other animals laugh and play, Winkler teamed up with another scientist named Greg Bryant, a professor and vice chair in the Department of Communication at UCLA. Together, they found and read dozens of reports written by other scientists who study animals. Winkler and Bryant looked for any mentions in any animal of sound signaling like the panting of the monkeys during their playing.

In April 2021, Winkler and Bryant published their findings in a science journal. Through their research, they identified 65 species or groups of animals, which laugh while playing. The animals that laugh the most include primates (灵长类) like monkeys and apes, rodents (啮齿动物) like rats, and mammals that live in the ocean like dolphins. Their work won’t only help us understand animals better but it could also help us understand how humans develop or change over time. Next, they will carry on more study to find more.

1. What is the function of paragraph 1?

A．To conclude the main idea.

B．To put forward the topic.

C．To offer the supporting evidences.

D．To add the background information.

2. What are the small monkeys like when they are having fun?

A．They can hardly breathe.

B．They tend to laugh separately.

C．They laugh at a low sound.

D．They don’t laugh at all.

3. What do we know about Winkler and Bryant’s study?

A．It is great progress in the study of animals and humans.

B．It is only based on the findings in a science journal.

C．Over 65 groups of animals laugh while playing.

D．They do the research only by studying primates and rodents.

4. In which section of a newspaper may this text appear?

A．Science.

B．Education.

C．Health.

D．Entertainment.