1 . On Oct. 11, hundreds of runners competed in a cross-country race in Minnesota. Melanie Bailey should have _________ the course earlier than she did. Her _________ came because she was carrying a _________ across the finish line.

As reported by a local newspaper, Bailey was more than two-thirds of the way through her _________ when a runner in front of her began crying in pain. She _________ to help her fellow runner, Danielle Lenoue. Bailey took her arm to see if she could walk forward with _________. She couldn’t. Bailey then _________ to let Lenoue climb onto her back and carried her all the way to the finish line, then another 300 feet to where Lenoue could get _________ attention.

Once there, Lenoue was _________ and later taken to a hospital, where she learned that she had serious injuries in one of her knees. She would have struggled with extreme __________ to make it to that aid checkpoint without Bailey’s help.

As for Bailey, she is more __________ about why her act is considered a big __________. “She was just crying. I couldn’t __________ her,” Bailey told the reporter. “I feel like I was just doing the right thing.”

Although the two young women were strangers before the __________, they’ve since become friends. Neither won the race, but the __________ of human kindness won the day.

2 . When John Todd was a child, he loved to explore the woods around his house, observing how nature solved problems. A dirty stream, for example, often became clear after flowing through plants and along rocks where tiny creatures lived. When he got older, John started to wonder if this process could be used to clean up the messes people were making.

After studying agriculture, medicine, and fisheries in college, John went back to observing nature and asking questions. Why can certain plants trap harmful bacteria (细菌)? Which kinds of fish can eat cancer-causing chemicals? With the right combination of animals and plants, he figured, maybe he could clean up waste the way nature did. He decided to build what he would later call an eco-machine.

The task John set for himself was to remove harmful substances from some sludge (污泥). First, he constructed a series of clear fiberglass tanks connected to each other. Then he went around to local ponds and streams and brought back some plants and animals. He placed them in the tanks and waited. Little by little, these different kinds of life got used to one another and formed their own ecosystem. After a few weeks, John added the sludge.

He was amazed at the results. The plants and animals in the eco-machine took the sludge as food and began to eat it! Within weeks, it had all been digested, and all that was left was pure water.

Over the years, John has taken on many big jobs. He developed a greenhouse — like facility that treated sewage (污水) from 1,600 homes in South Burlington. He also designed an eco-machine to clean canal water in Fuzhou, a city in southeast China.

“Ecological design” is the name John gives to what he does. “Life on Earth is kind of a box of spare parts for the inventor,” he says. “You put organisms in new relationships and observe what’s happening. Then you let these new systems develop their own ways to self-repair.”

4 . In April last year, I saw a post on the PNP (Pilots N Paws) website from a family in Topeka. They had to move to Virginia but they were on a very tight _______. They could not afford to pay for _______ for their dog, Tiffy, and _______ wanted to take her with them.

It just _______ that I was planning another PNP flight with another pilot, Karen, who _______ to take Tiffy from Kansas City to Virginia. What I was to do was fly to Topeka to _______ Tiffy.

When I met Tiffy’s owners, they seemed very _______. George, the husband, was trying to be calm, but I could tell this was _______ for him, having to leave his dog to a _______ and trust that everything would __________.

After some goodbyes, I asked George and his wife to help me __________ Tiffy into the plane. I promised to take care of Tiffy and __________ them as soon as we got to Kansas City.

The flight was __________, and Tiffy was a great passenger. The next day, she __________ with Karen and made it back to George in Virginia within a few days. He was so __________ and sent me a nice e-mail with pictures. It felt great to know that I had helped bring this family together again.

Beijing is a city bridging the ancient and the modern. From Buddhist temples to museums, narrow hutong     1     royal palaces, it is home to more than 3,000 years of glorious history even down to its layout, with the city keeping its carefully     2     (build) system of ring roads.

But for all its ancient buildings, Beijing is also a place     3     welcomes the fast-paced development of modern life, with 21st-century architectural     4     (wonder) standing side by side with historical buildings of the past.

It is a distinct visual contrast (反差) that shouldn’t work,     5     somehow these two very different worlds make a good combination.     6     (visit) several times over the last 10 years, I     7     (amaze) by the co-existence of old and new, and how a city was able to keep such a rich heritage (遗产) while constantly growing. As a photographer, I have spent the last two years     8       (record) everything I discovered.

The     9     (remark) development of this city, which is consciously designed to protect the past while stepping into the modern world,     10     (mean) there is always something new to discover here, and I could be photographing Beijing for the next 50 years.

8 . According to the Solar Energy Industry Association, the number of solar panels installed(安装)has grown rapidly in the past decade, and it has to grow even faster to meet climate goals. But all of that growth will take up a lot of space, and though more and more people accept the concept of solar energy, few like large solar panels to be installed near them.

Solar developers want to put up panels as quickly and cheaply as possible, so they haven’t given much thought to what they put under them. Often, they’ll end up filling the area with small stones and using chemicals to control weeds. The result is that many communities, especially in farming regions, see solar farms as destroyers of the soil.

“Solar projects need to be good neighbors,” says Jordan Macknick, the head of the Innovative Site Preparation and Impact Reductions on the Environment(InSPIRE)project. “They need to be protectors of the land and contribute to the agricultural economy.” InSPIRE is investigating practical approaches to “low-impact” solar development, which focuses on establishing and operating solar farms in a way that is kinder to the land. One of the easiest low-impact solar strategies is providing habitat for pollinators(传粉昆虫).

Habitat loss, pesticide use, and climate change have caused dramatic declines in pollinator populations over the past couple of decades, which has damaged the U.S. agricultural economy. Over 28 states have passed laws related to pollinator habitat protection and pesticide use. Conservation organizations put out pollinator-friendliness guidelines for home gardens, businesses, schools, cities—and now there are guidelines for solar farms.

Over the past few years, many solar farm developers have transformed the space under their solar panels into a shelter for various kinds of pollinators, resulting in soil improvement and carbon reduction. “These pollinator-friendly solar farms can have a valuable impact on everything that’s going on in the landscape,” says Macknick.