3 . Black Valley, 63 kilometers from downtown Chongqing, is one of the best preserved natural wonders around the municipality. The national 5A-level scenic spot is a popular summer resort for sightseeing, forest adventures, outdoor camping, hunting and angling.

Located in Heishan town, Wansheng Economic Development Zone, the scenic spot spans over 103 square kilometers, 97 percent of which are covered by primitive forests. With over 110,000 negative oxygen ions in each cubic centimeter of air, it is dubbed as a natural oxygen bar and “the most beautiful healthcare-themed valley.”

Black Valley is also known as “the natural gene bank of Chongqing and Guizhou regions” for the diversity of its rare plants and wildlife, including Cathaya argyrophylla, Davidia involucrata, Trachypithecus francoisi and clouded leopards.

Scenic spot level: AAAAA

Address: Heishan town, Wansheng Economic Development Zone, 63 kilometers from downtown Chongqing Opening hours: 8:30 am - 3:30 pm (peak season from November to February), 9:00 am-3:00 pm (off season from March to October)

Ideal sightseeing season: from May to September

Ticket price: 60 yuan ($8.72) during off season and 100 yuan during peak season, sightseeing bus and cable not included.

Notes:

It is recommended that tourists start from the higher southern area for a downward journey.

The average temperature is 18.1 degrees.

It’s a good idea to experience the local folk culture of the Miao ethnic group, especially when you choose to visit in May when the traditional Caishan Festival of Miao ethnic group is celebrated.

1. What can we know about Black Valley?

A．It lies in downtown Chongqing.

B．Plants and wildlife are rarely seen there.

C．A visit there costs at most 100 yuan.

D．The air is very high in negative oxygen ions there.

2. A best time for a visitor and lover of the folk culture to Black Valley is in

A．January.

B．March.

C．May.

D．July.

5 . Team China’s teenage freeski superstar Gu Ailing had halfpipe gold wrapped up by her second run at Genting Snow Park in Zhangjiakou. “I’ve never taken a victory lap before in my entire life, but this time I felt like I finally deserve it,” Gu told reporters after becoming the first athlete to win Olympic medals in all three freeski events. Her big victory at the 2021 X Games in Aspen, Colorado, where she won Big Air, halfpipe and slopestyle golds, increased the expectation level for her Olympic performance in Beijing.

Born in California to a Chinese mother, Gu began competing for China when she was 15 in 2019, stating her aim to inspire millions of young people during the 2022 Winter Olympics in Beijing and promote the sport she loves. Since then, the outstanding part-time model and grade-A student has been busy gaining records, titles and firsts. All the while her superstar status has snowballed, as evidenced by her millions of followers on social media.

The 18-year-old also clearly feels she has achieved much away from the sporting arena at Beijing 2022 and she has become the inspiration for many. “After reading hundreds of messages that I get every day from young girls saying that they go sking because of me and they want to keep going or they, you know, broke their boundaries in some other way and felt inspired by something that I said, I feel all those little things are immensely rewarding.”

When asked about her future plan, she had no idea whether she would continue to compete in freestyle skiing. “I’m going to do whatever feels right, and hopefully I’ll be able to create some kind of positive change out of any position that I'm in,” said Gu.

1. Gu was the first athlete to________.

A．take a victory lap in the Olympics	B．gain three golds at the 2021 X Games
C．win three golds in the Olympic events	D．get Olympic medals in three freeski events

2. What do we know about Gu?

A．She was born in China.

B．She did well in different fields.

C．Her superstar status badly affected her life.

D．Her aim was to promote the Winter Olympics.

7 . As Ginni Bazlinton reached Antarctica, she found herself greeted by a group of little Gentoo penguins (企鹅) longing to say hello. These gentle, lovely gatekeepers welcomed her and kick-started what was to be a trip Ginni would never forget.

Ever since her childhood, Ginni, now 71, has had a deep love for travel. Throughout her career (职业) as a professional dancer, she toured in the UK, but always longed to explore further. When she retired from dancing and her sons eventually flew the nest, she decided it was time to take the plunge.

After taking a degree at Chichester University in Related Arts, Ginni began to travel the world, eventually getting work teaching English in Japan and Chile. And it was in Chile she discovered she could get last-minute cheap deals on ships going to Antarctica from the islands off Tierra del Fuego, the southernmost tip of the South American mainland. “I just decided I wanted to go,” she says. “I had no idea about what I’d find there and I wasn’t nervous, I just wanted to do it. And I wanted to do it alone as I always prefer it that way.”

In March 2008, Ginni boarded a ship with 48 passengers she’d never met before, to begin the journey towards Antarctica. “From seeing the wildlife to witnessing sunrises, the whole experience was amazing. Antarctica left an impression on me that no other place has,” Ginni says. “I remember the first time I saw a humpback whale; it just rose out of the water like some prehistoric creature and I thought it was smiling at us. You could still hear the operatic sounds it was making underwater.”

The realization that this is a precious land, to be respected by humans, was one of the biggest things that hit home to Ginni.

1. What made Ginni decide on the trip to Antarctica?

A．Lovely penguins.	B．Beautiful scenery.
C．A discount fare.	D．A friend’s invitation.

2. What does Ginni think about Antarctica after the journey?

A．It could be a home for her.	B．It should be easily accessible.
C．It should be well preserved.	D．It needs to be fully introduced.

8 . Goffin’s cockatoos, a kind of small parrot native to Australasia, have been shown to have similar shape-recognition abilities to a human two-year-old. Though not known to use tools in the wild, the birds have proved skilful at tool use while kept in the cage. In a recent experiment, cockatoos were presented with a box with a nut inside it. The clear front of the box had a “keyhole” in a geometric shape, and the birds were given five differently shaped “keys” to choose from. Inserting the correct “key” would let out the nut.

In humans, babies can put a round shape in a round hole from around one year of age, but it will be another year before they are able to do the same with less symmetrical (对称的) shapes. This ability to recognize that a shape will need to be turned in a specific direction before it will fit is called an “allocentric frame of reference”. In the experiment, Goffin’s cockatoos were able to select the right tool for the job, in most cases, by visual recognition alone. Where trial-and-error was used, the cockatoos did better than monkeys in similar tests. This indicates that Goffin’s cockatoos do indeed possess an allocentric frame of reference when moving objects in space, similar to two-year-old babies.

1. How did the cockatoos get the nut from the box in the experiment?

A．By following instructions.	B．By using a tool.
C．By turning the box around.	D．By removing the lid.

2. Which task can human one-year-olds most likely complete according to the text?

A．Using a key to unlock a door.	B．Telling parrots from other birds.
C．Putting a ball into a round hole.	D．Grouping toys of different shapes.

9 . If you ever get the impression that your dog can “tell” whether you look content or annoyed, you may be onto something. Dogs may indeed be able to distinguish between happy and angry human faces, according to a new study.

Researchers trained a group of 11 dogs to distinguish between images (图像) of the same person making either a happy or an angry face. During the training stage, each dog was shown only the upper half or the lower half of the person’s face. The researchers then tested the dogs’ ability to distinguish between human facial expressions by showing them the other half of the person’s face or images totally different from the ones used in training. The researchers found that the dogs were able to pick the angry or happy face by touching a picture of it with their noses more often than one would expect by random chance.

The study showed the animals had figured out how to apply what they learned about human faces during training to new faces in the testing stage. “We can rule out that the dogs simply distinguish between the pictures bused on a simple cue, such as the sight of teeth, ” said study author Corsin Muller. “Instead, our results suggest that the successful dogs realized that a smiling mouth means the same thing as smiling eyes, and the same rule applies to an angry mouth having the same meaning as angry eyes.”

“With our study, we think we can now confidently conclude that at least some dogs can distinguish human facial expressions,” Muller told Live Science.

At this point, it is not clear why dogs seem to be equipped with the ability to recognize different facial expressions in humans.“To us, the most likely explanation appears to be that the basis lies in their living with humans, which gives them a lot of exposure to human facial expressions, ” and this exposure has provided them with many chances to learn to distinguish between them, Muller said.

What can we learn about the study from paragraph 2?

A．Researchers tested the dogs in random order.

B．Diverse methods were adopted during training.

C．Pictures used in the two stages were different.

D．The dogs were photographed before the test.

10 . I have worked as a keeper at the National Zoo, Paris for 11 years. Spot and Stripe are the first tiger cubs that have ever been born here. Globally, a third of Sumatran cubs in zoos don’t make it to adulthood, so I decided to give them round-the-clock care at home.

I’ve got two children—the younger one, Kynan, was extremely happy about the tigers arriving - but all of us really looked forward to being part of their lives and watching them grow. I wasn’t worried about bringing them into my home with my wife and kids. These were cubs. They weighed about 2.5 kg and were so small that there was absolutely no risk.

As they grew more mobile, we let them move freely around the house during the day, but when we were asleep we had to contain them in a large room, otherwise they’d get up to mischief. We’d come down in the morning to find they’d turned the room upside down, and left it looking like a zoo.

Things quickly got very intense due to the huge amount of energy required to look after them. There were some tough times and I just felt extremely tired. I was grateful that my family was there to help. We had to have a bit of a production line going, making up “tiger milk”, washing baby bottles, and cleaning the floors.

When Spot and Stripe were four months old, they were learning how to open doors and jump fences, and we knew it really was time for them to go. It was hard for us to finally part with them. For the first few days, Kynan was always a bit disappointed that the cubs weren’t there.

I'm not sad about it. I’m hands-on with them every day at the zoo, and I do look back very fondly on the time that we had them.

What did the author think of raising the tiger cubs at home?

A．Boring.

B．Tiring.

C．Costly.

D．Risky.