2 . One afternoon, while staying with friends at their house there, my husband and I decided to go for a walk along the traffic-free country road in the area. We met a beautiful Golden Retriever. He seemed exceptionally friendly so we stopped to play with him, throwing a stick which he retrieved（取回）several times happily. When we continued our walk, he followed us. I couldn't deny that we were enjoying his company.

After about twenty minutes, we found ourselves walking along a dirt road in an unfamiliar area. One house, almost hidden by tall trees, seemed somehow strange. I wanted to get as far away from that place as possible.

Just then, the door to the house opened and five dogs rushed out, barking as they ran toward us. I felt terrified and couldn't move. All of a sudden, our new friend appeared between the dogs and us. He faced them-all five of them-barking and baring his teeth. I was amazed to see the attacking dogs stop in their tracks ten feet away from him. Our protector held them there while we escaped.

At a safe distance, we looked back and saw the five dogs heading back toward their house. But the Golden Retriever was nowhere in sight. I felt an ache in my heart; I missed our friend already.

With a feeling of emptiness, we made our way back to the house, hoping the whole way that we would see him again. But it was not to be.

When I told our friend about the encounter, her eyes flew wide open as she exclaimed, "It was an angel!"

To this day I have no doubt, A four-legged angel protected us.

3 . Five years ago, French navy officer Jérôme Chardon was listening to a radio program about the journey of the bar-tailed godwit, a bird that migrates 14,000 kilometers between New Zealand and Alaska. Chardon understood how treacherous the journey would be, as heavy storms frequently hit Pacific island communities. Yet, somehow, bar-tailed godwits routinely pass through the area uninjured. Chardon wondered whether learning how birds traveled could help coastal communities avoid natural disasters.

This past January, a team from France’s National Museum of Natural History (NMNH) began experiments designed to test Chardon’s idea. Researchers with a project led by Frédéric Jiguet from NMNH equipped 56 birds of five species with cutting edge animal tracking technology. The team members were ferried to remote islands in French Polynesia, where they attached tags (标签) using tracking technology. These tags sent the birds’ locations to the International Space Station, which bounced the data back to scientists on Earth who could then follow the birds—waiting to see how the birds responded to natural disasters.

The project is focusing on birds’ ability to hear infrasound, the low-frequency sound humans cannot hear but that the researchers believe is the most likely signal birds would use to sense storms and tsunamis (海啸). In a 2014 study, scientists tracking a kind of golden-winged birds in the central and southeastern America found that the birds flew up to 1,500 kilometers to escape from an outbreak of tornadoes (龙卷风) that killed 35 people. The birds fled at least 24 hours before any extreme weather hit, leaving the scientists to believe that they had heard the storm system from more than 400 kilometers away.

The team plans on tagging hundreds more birds across the Pacific to prepare for a potential tsunami. “I think if there’s one wave that spreads across islands, we can get data from different species at different locations,” says Jiguet. “That will say it s worth continuing to tag and to develop local systems to better analyze this. There are chances that we will develop a bird-based tsunami early warning system.”

5 . Lots of people dream of a beach vacation, but hesitate to take one because they don't want to leave a pet behind.     1     You can enjoy some fun in the sun on a beach vacation with your pet. It is easier than ever to find a beach that welcome your pets, and a little extra planning and preparation is all that is required to have a wonderful time on vacation with your pet.

    2     Use the Internet to determine whether a beach is pet friendly. You can look at a beach's website, lists of pet-friendly beaches where you will be traveling. They will tell you about any rules on pets at the local beaches.

Find a hotel that is pet-friendly. Most hotels that accept pets will advertise themselves as pet-friendly on their websites.     3     It's better to know if your pet will be welcome before you make an order.

Clean up after your pet. When vacationing with your pet it doesn't mean that all responsibility is gone. Picking up after it, whether that is when it goes to the bathroom or it makes a mess with its food, is still your responsibility.     4    

Be considerate of others.     5     Some people are scared of animals, especially children, so just be aware of other animals and people on the beach and keep your pet away from them if necessary.

7 . When 69-year-old Dobrgyal started looking after the wild macaques (猕猴) at a scenic spot in China’s Tibet Autonomous Region, their population _________ only 40-50. Today, 18 years later, that same place is _________ to over 2,800 Tibetan macaques.

Dobrgyal’s relationship with the Tibetan macaques has been described as a _________ love story between man and monkey. A former _________ keeper, Dobrgyal has been driving 5km almost every day just to feed the macaques, show them _________ and make sure they are healthy. _________ , he has even taken some of the sick animals home and _________ them back to health.

China.org reports that Dobrgyal has been the only one working as a _________ in Gongbo’gyamda area for the last 16 years, and _________ him as the main reason that the macaque population is rising.

Tibetan macaques are a/an __________ species in China, and their food is provided by the Gongbo’gyamda forestry bureau(局), but it’s Dobrgyal who loads the bags in his trucks and __________ it to the monkeys personally. Thanks to his __________ , the macaques have become very __________ with tourists, many of whom also help to __________ the animals.

Having dedicated almost two decades of his life to the macaques, Dobrgyal now __________ himself about what will happen to them if his physical __________ no longer allows him to take care of them properly.

“Now I’m so old, nearly 70 years old,” Dobrgyal said recently. “In the __________ of my life I will do my best to take care of the monkeys, but if someday my health __________ me feeding them anymore, I will have my sons replace me.”

__________ , the furry creatures will be able to rely on their __________ human father for many years to come.

9 . The founder of Earth Day was Gaylord Nelson, a U.S. Senator from Wisconsin. During the late 1960s, Americans witnessed the uninvited side effects of high productivity. Factories and power plants were sending out smoke and industrial waste while Americans were using petrol for their massive(大量的) cars, making air pollution almost synonymous with the nation’s development.

What moved Senator Nelson to action was the 1969 massive oil spill in California, the largest in the United States at that time. The spill proved to be an environmental nightmare as it had a significant effect on marine life, killing about 3,500 sea birds, as well as marine animals such as dolphins, elephant seals and sea lions, fueling public anger. Inspired by the student antiwar movement at that period of time, Nelson found it an appropriate time to direct the energy of the students towards a fight for environmental protection. He decided that it was time to educate the Americans on the need to protect the environment. Thus Earth Day was born in 1970, and public environmental awareness took centre stage.

On 22^nd April 1970, millions of Americans took to the street and thousands of students marched to appeal for a healthy, sustainable environment. There was now a new synergy(协同作用) among different groups which had previously been fighting their causes related to the environment. Their fight for environmental conservation became so overwhelming that affected businesses were forced to follow environmental standards if they wanted to continue their operations.

As it became more apparent that environmental issues were not just localized ones but a global concern, the year 1990 saw Earth Day reach out to many more around the world. Earth Day 1990 helped pave the way for the 1992 United Nations Earth Summit in Rio de Janeiro, bringing together many nations for a united effort towards protecting the environment.

10 . On May 9, 2016, biologist Chris Kelly saw a lone bat on a bridge crossing the French Broad River outside Asheville, North Carolina. Five years later, everything wildlife biologists thought they knew about endangered gray bats in this corner of the Blue Ridge Mountains has been changed.

Kelly, a biologist with the N.C. Wildlife Resources Commission, was on the bridge doing bird work. Bats aren't her area of expertness, so she reached out to the state's bat experts. Joey Weber, a technician who was working for the Commission, arrived at the bridge later that day and found 19 big brown bats inhabiting in the expansion joints. But he heard many more.

That night, Weber was joined by Katherine Etchison, the Commission's bat biologist, for an emergence count. They counted 240, but a busy schedule meant the team couldn't return for a second emergence count until July 18. “I was very eager to get back out there because I really thought there would be something besides big brown bats. I was thinking Mexican free-tailed bats, which would be a first for Buncombe County, and I was right but that wasn't the big news,” said Etchison.

The second emergence count recorded 1,000 bats. To learn which species used the bridge, biologists recorded the ultrasonic(超声的) sounds made by emerging bats, which are species-specific. Later that night, Etchison rolled through the recorded calls, displayed vividly on her computer, and the suspected Mexican free-tailed bats showed up. But, so too did something very unexpected.

She immediately texted Susan Cameron, an Asheville-based biologist. Along with big brown and Mexican free-tailed bats, the computer identified the calls of endangered gray bats. The discovery was confirmed the next day when Etchison, Weber, and Cameron visited the bridge at dusk-just before bat emergence-and carefully captured a bat from one of the expansion, joints. The 2016 discoveries marked the first time gray bats were known to inhabit in North Carolina.