Each year more than 3 million people visit Rocky Mountain National Park, the third most-visited national park in the USA. Many of them arrive there by car, they drive along the Trail Ridge Road, which     1     (build) during the 1930s.

People are attracted by its scenery, hiking trails and wildlife. The hiking trails include    2     (challenge) difficult climbs    3     some of the high mountains and forest hikes     4    lead to one of the park’s waterfalls. They also include trails to blue lakes. The view of Longs Peak from its lakeside is the finest in the whole park. One of the most     5     (adventure) hikes in the park is the Continental Divide Loop. The 86-kilometer path cuts through valleys and past lakes and waterfalls. It takes most hikers at least six days    6     (complete).

Long hikes give visitors a chance to experience Rocky Mountain wildlife. Within the park     7     (be) hundreds of sheep as well as     8     small moose population. The park’s huge number of large animals makes     9     one of the best places in America for wildlife watching.

The     10     (explore) of the park could be enjoyable and unforgettable. You can explore it on foot, you can sleep under the stars, and you can sit by a clear quiet lake.

Nanjing, the capital city of China’s Jiangsu Province and located ( 位于) along the Yangtze River Delta (三角洲),     1     (be) once the capital of the Ming Dynasty and is recognized as one of the Four Great Ancient Capitals of China alongside Beijing, Xi’an     2     Luoyang.

But if you’ll only be visiting for 72 hours, there are a few     3     (experience) that you shouldn’t miss out on.

Any trip to Nanjing, no matter     4     short it is, wouldn’t be complete without some excellent food. Nanjing cuisine is a part of Jiangsu cuisine and often shows the area’s     5     (local) grown produce and fresh seafood.

The city is also considered the birthplace of Peking Duck, but it also prepares a local favorite: Nanjing salted duck,     6     is served cold after being cooked in very salty water.

Nanjing is known for     8     (it) cultural and political importance. Today, travelers can visit numerous temples (寺庙) within the city and walk along Stone City, the remains of the city’s ancient fortifications (防御工事), at a local park.

Nanjing is also home     9     one UNESCO World Heritage Site — the Xiaoling Mausoleum of the Ming Dynasty, located in the Zhongshan Mountain National Park, where many other    10     (importance) sites, such as Dr. Sun Yat-sen Mausoleum, are also located.

3 . “When one door closes,” the saying goes, “another door opens.” For one _______ dog, it appears that saying is also suitable for doggy doors.

A dog named Sheldon took part in a program to _______ a service dog. Unluckily, he couldn’t quite make the _______. Whenever he would _______ something interesting, Sheldon’s concentration flew out of the window and all he wanted to do was _______ the source.

But the very thing that made him a failure as a service dog meant he was likely _______ for another dog job. Sheldon was sent to the State Farm Arson Dog Program, where his sensitive (灵敏的) nose soon put him _______ the class for detecting the accelerants (探测肋燃剂) used to light illegal fires.

_______ John Tadlock of the Saginaw fire department, after his _______ Sheldon went on to become the department’s best accelerant detection dog.

In his first ________, Sheldon and his partner Tadlock were called to a car shop to look into some cars that had been ________ under suspicious (可疑的) circumstances. After three days, no one had been able to figure out how the fire got started — but the cause wasn’t ________ to Sheldon. “I put him to ________. It took him about 30 seconds to give me an alert (警报),” Tadlock said. Sheldon found the evidence with no ________.

For a dog with a super sense of smell, we guess whether you’re tailing bad guys or hunting for a job, it’s always best to follow your ________.

4 . My family always had some sort of animal around, but none of them were truly mine. My parents didn’t permit me to _________ my own until I was seven years old. Finally, I was _________ to have my own _________, a fish called George. I said it was my responsibility to _________ it.

Every Friday I would clean out his bowl. I found myself _________ invitations to go somewhere immediately after school, because I would have to feed my fish first. Every day he would remind me that I was _________ and that I had someone depending on me.

One day, I came home from school and headed to my room to _________George. I found a _________ thing had happened. I _________ my bag and ran over to the bowl. I saw my best friend George floating around lifeless.

My mom walked into my room. I turned around as tears started to well in my eyes. “Mommy, George d…d…died.” With that __________ word I started crying uncontrollably. My mom came to my side as I hid my face in my pillows.

Suddenly, I realized that George hadn’t just __________ me. He had taught me what __________ meant. I learned it through feeding him and cleaning his bowl. This made me feel __________ . To my seven-year-old self, this was a great __________ . Slowly, a smile crossed my face. George was gone.__________ , the lessons he taught me would forever be carved into my memory.

5 . When Hurricane Ian hit Florida, Karen Lauder refused to leave her home because she was wrong about the intensity(强度) of the storm. Karen is 84 years old and depends on a wheelchair to get around because she is missing a leg. Her son, Johnny Lauder, tried repeatedly to get her to leave, but she refused.

Johnny and his whole family live within a few blocks of one another. They kept in touch with Karen as the storm continued violently(猛烈地) outside, watching the water rising dangerously all around them. When Karen reported that the water in her house had reached her bottom, Johnny knew he had to take action.

First, Johnny ensured his sons and their pets were taken care of. Then, he jumped out of a window and began to swim. Johnny used to work as a rescue swimmer. He is obviously a strong swimmer, but the flood water was filled with dangerous materials. There was also a strong current (水流), and he had to swim against it for most of his trip to Karen’s. As he made his way through the water, Johnny stopped periodically to snap selfies(自拍) to show his worried family that he was okay.

Johnny was racing against the clock. He knew he only had a short period of time to get there before the water rose above Karen’s head. It took him 40 minutes to swim four blocks. The sound of Karen shouting inside was music to his ears!

“If it would’ve been 20 minutes later, she wouldn’t be here,” Johnny said.“She’s never been happier to see me.”

Karen is now safe, although she is in the hospital being treated for infections(感染) she got in the water. The family have all lost everything they owned, including their houses, but they’re grateful just to be here.

The Washington State Department of Agriculture (WSDA) said a large atlas moth (皇蛾)     1    (find) on a garage (车库) was identified as the first atlas moth ever documented in the United States.

The department said     2     university teacher took place photos when he found the large moth resting on the wall of     3    (he) garage on July 7. State officials     4    (careful) examined the photos and     5    (confirm) the insect was an atlas moth, one of the world’s largest species of moth.

Atlas moths are native     6     the tropics (热带地区) and have never been documented in the United States.

“This is an     7    (attract) type of insect because it is so large,” said Sven-Erik Spichiger from the agriculture department. “Even if you don’t keep an eye out for insects, this is one that people will get their phones out and take a picture of — they are that striking.”

    8    (researcher) said they are now trying to find out if the moth is part of a population in Washington. They are asking anyone     9     discover s a similar insect     10    (report) it to pestprogram@agr.wa.gov .

“We hope residents will help us learn if this was a one-off escapee or whether there might be a population in the area,” the department said.

10 . Dutch researchers have discovered that birds living in cities are using metal spikes (尖刺) to build their nests. People put these spikes on buildings in order to keep birds off their balconies, benches, and chimneys, but birds seem to be stealing them and using them to keep people away from their eggs.

The research began when, in the courtyard of a hospital in Antwerp, Belgium, biologist AukeFlorian Hiemstra found a large nest that had been built by a magpie (喜鹊). The nest was made from about 1,500 metal spikes. They were pointing outward to create a protective system around the nest.

“I just stared at it, this strange, beautiful, weird nest,” Hiemstra told BBC News. When he investigated further, he found that magpies had moved away nearly 165 feet of metal spikes that had been glued to the hospital’s roof.

After Hiemstra made this discovery, his team heard about a similar nest created by crows in Rotterdam, in the Netherlands, and another magpie nest in Glasgow, Scotland. The crows had positioned the spikes in a different way, perhaps using the metal to support the nest’s structure.

In their report, the researchers mention many kinds of birds moving spikes off buildings, but they chose to focus their study on corvids(birds from the crow family). The researchers pointed out that there have been previous studies on how corvids use everything from telephone wires to clothes hangers to build their nests. They said the use of anti-bird spikes “hints at a functional use”—meaning the birds seem to know exactly what they’re doing.

Magpies have often been seen nesting in thorny (多刺的) places, where the thorns can prevent people from attacking the small eggs and chicks inside the nest. Thorny hedges aren’t common in cities, however, so the theory is that magpies use the human-made version instead. Hiemstra calls this the birds’ “revenge”. “We’re trying to get rid of birds, but the birds are collecting our metal spikes and actually making more birds in these nests,” he said.