3 . In 2017, my husband-to-be, Ricardo, brought his border collie (牧羊犬), Jack, on our first date. I was swiftly struck by the pair of them. Fast forward 18 months and they’d fitted in _______ with me and my daughter, Cayla. The _______ between Jack and us is like no other — he brings us great joy and makes us happy. Now we were all _______ to take on a new family member.

Then came our _______ to the animal rescue centre. It was a love at first sight between Cayla and a little dog, Ruby. As I _______ this little creature instantly sat back. She made herself as tall and _______ as she could, trying to contain her _______ while apparently letting me know what a good girl she was. It _______ our adventures as a family of five _______.

One day, Cayla scootered (玩踏板车) off out of sight along the footpath, Jack and Ruby by her side. Before long, with an ________ bark. Jack ran back, forcing us to ________ we did, and found Cayla, bloody-kneed after falling off.

Cayla looked up smiling, overjoyed that the dogs had come through for her in her moment of ________. One went for help while the other ________ the wounded. It’s a wonderful ________ of how our dogs care for their pack. And I can’t ________ our family without them.

4 . In nature, octopuses (章鱼) hunt mainly with their sense of touch, using their eight arms to feel out their environment for hidden creatures. Researchers at the University of Minnesota recently studied a different way octopuses hunt—when they identify prey (猎物) based on sight. The study findings show that the marine creatures are quite consistent and methodical in how they approach prey.

Lead researcher Trevor Wardill and his team placed California two-spot octopuses into water tanks, hiding them in caves where they would have one eye looking out. They then placed either fiddler crabs or white shrimp in the tanks to see how the octopuses would try to catch them, capturing the interactions on video. The crabs and shrimp behave differently when trying to escape from predators (捕猎者), so using both species gave the researchers an opportunity to see whether this led the octopuses to use a different arm for hunting depending on the prey.

Wardill’s team found that the octopuses almost always used the same arm to grab their prey. Specifically, the second arm from the middle of the octopuses’ body, on the same side of their body as the eye, caught the prey. If they needed more arms to grab prey, they would use the ones next to the second arm.

The octopuses also attacked differently depending on the prey. When faced with crabs, an octopus would move suddenly on top of the crab with its whole body. However, when catching shrimp, the octopuses would take one arm and reach out very slowly toward the shrimp, then grab it and latch (缠住) onto it with its other arms to pull it in.

Wardill and his team hope to do more research. They want to study the octopus’s brain as it attacks pre y to develop a better understanding of what role the creature’s nervous system plays in selecting the arms it uses.

In southern China, there is a famous road     1    (build) across Poyang Lake, which lies in the north of Jiangxi Province, China and is known as China’s second     2     (large) lake. People in China also call it “the most beautiful road under the water.”

This road is sure     3     (attract) a lot of attention towards the end of May every year. A lot of people come out of     4     (curious). The water level of the lake is so close to the surface of the road,     5     makes the view ahead broad and bright when people drive along. It’s as though they were taking a boat across the lake. The feeling is     6     (simple) wonderful!

For the next few months, this road is not above the surface    7    under the water. When the water level of Poyang Lake starts to go up, the road surface becomes unseen. However, drivers can still drive across the lake safely     8     watching the guardrails(防撞护栏) fixed on either side of the road. For thrill-seeking motorists, it’s like     9     (drive) an amphibious(水陆两栖的) super car. Then in a few days, the entire road     10     (flood) with the continuously rising water. A few months later, the road will reappear.

6 . Some ants have figured out how to avoid getting lost: build taller anthills, according to a recent study.

Desert ants living in the hot, flat salt pans of Tunisia spend their days looking for food and reach as far as 1.1 kilometers from their nests. To find their way home, desert ants use a navigation system, relying on the sun’s position and counting their steps to track their location relative to their nest.

But this system becomes increasingly unreliable as the distance from the nest increases. “We realized that, whenever the ants in salt pans came closer to their nest, they suddenly pinpointed the nest hill from several meters distance,” says Markus Knaden, a researcher at Max Planck Institute for Chemical Ecology. “This made us think that the hill serves as a nest-defining landmark.”

So Knaden and colleagues captured ants from nests in the middle of salt pans and from along their shorelines. Only salt-pan nests had distinct hills, up to 40 centimeters tall, whereas the hills on shoreline nests were lower or barely noticeable. Next, the team removed any hills and placed the captured insects some distance away from their nests. Salt-pan ants struggled more than shore ants to find homes. Shore ants relied on the shoreline for guidance and weren’t affected by the hill removal, the researchers concluded.

The team further conducted another study to see if desert ants were deliberately building a taller hill when their surroundings lacked any visible landmarks. So, the researchers removed the hills of 16 salt-pan nests and installed (安装) two 50-centimeter-tall blocks near eight of them. The other eight nests were left without any artificial visual aid. After three days, the researchers found that seven ants from the unaided nests had rebuilt their hills. But only two ants from the nests with man-made blocks nearby had bothered to rebuild.

“It implies that ants regularly assess the complexity of their environment and change their decisions based on their conclusion,” says ecologist Judith Bronstein of the University of Arizona.

7 . “A lot of the time when climate change is discussed in mainstream media, people are asking ‘can humans overcome this?’, or ‘what technology can solve this?’. It’s high time we recognized that animals also have to adapt to various changes. We know some animals change their skin colors to escape from natural enemies or due to environment pollution,” says Ryding. “The climate change that we have created is putting a lot of pressure on them, and some species try to adapt by shapeshifting (变形). ”

Strong shapeshifting has particularly been reported in birds. Several species of Australian parrot have shown, on average, a 4%—10% increase in beak (鸟喙) size since 1871, and this is positively linked with the summer temperature each year. North American dark-eyed juncos, a type of small songbird, had a link between increased beak size and short-term temperature extremes in cold environments. There have also been reported changes in mammalian species. Researchers have reported tail length increases in wood mice and leg size increases in masked shrews (鼩鼱).

“The increases in some body parts size we see so far are quite small—less than 10%—so the changes are unlikely to be immediately noticeable,” says Ryding. “However, some body parts such as ears are predicted to increase.”

Ryding intends to investigate shapeshifting in Australian birds firsthand by 3D scanning museum bird specimens from the past 100 years. It will give her team a better understanding of which birds are changing their body parts and why. “Shapeshifting does not mean that animals are coping with climate change and that all is ‘fine’,” says Ryding. “It just means they are adapting to survive it—but we’re not sure what the other ecological consequences of these changes are, or indeed that all species are capable of changing and surviving. ”

8 . My photographs are the items I would definitely take or guard in case of an emergency. But what else? This was the question I asked myself as a ________ came toward us.

Unlike some friends and________, we decided to stay in our home. We didn’t have to choose what we would save by ________ it into the car, but we still had to decide what required protection by storing it in our walk-in closet. Surprisingly, few items made the cut - an obvious ________ that we had surrounded ourselves with beautiful yet unessential items. We needed ________ for the truly important things: ourselves.

Because when you hear the roar of the winds, or when something ________ hard against your windows, you don’t think of photos.You don’t worry about your big screen TV, or those paintings you’ve covered with towels to protect them, or that ________ car that you still haven’t finished paying for.

As ________ goes on outside, this is what you think: My children, are they OK? Are their impact-resistant(耐冲击的) windows working ________? Are their roofs keeping out the damage? My grandchildren, are they crying out in fear? Are they ________ as their own grandparents are? My relatives — yes, even those I try to avoid — have they ________ the worst of it? My friends, will they be forced to move somewhere else permanently? You don’t think about what you own but about what you love; what money can’t buy back.

Months and years after the hurricane, I often told people that there are two parts to ________ this kind of catastrophe: the horror of the hurricane itself and then the rebuilding that follows. The ________ together of a life, however, will take months, perhaps years.

But we will do it, ________ and as a community. Of that I have no doubt. In fact, I’ll make one more prediction. Piece by piece, item by item, we will once again collect the material possessions that decorate a home. I hate to admit this, but lessons learned ________ fear aren’t always long-lasting.

9 . Open an app at your smart phone and scan the code bar on the garbage can. When you throw garbage into the garbage can, it will show the weight of the garbage and the points you can get from doing so.     1     It will become more popular in the future. Yes, we are talking about the smart garbage can.

    2     The environmental problems have become constant headaches in the development of those cities. Encouraging garbage classification has become an effective way.

In some cities, a variety of multifunctional smart garbage cans are being put into use. In Beijing, for example, a smart garbage can is equipped with an LED screen, which not only shows national policies on garbage classification but also shows the correct steps for garbage sorting. It can also calculate the weight of the garbage and the accumulated points one can get. They can be traded for some articles of daily use.     3     Its body is actually a screen. It is equipped with some Internal sensors. When people throw garbage into it, the internal sensors can automatically tell the types of the garbage. Meanwhile, people can see how to deal with them.     4    

Garbage disposal is a small issue that involves everybody each day. However, it is also a big issue.    5     With smart garbage cans in our daily life, the idea of garbage sorting will become more established. Our dream of building a greener and more beautiful China will come true so long as we start to make small changes right now.

People in Bangladesh and India are struggling as they face serious flooding caused by early heavy rains. The floods     1     (cover)roads, bridges, and entire villages so far.     2     (million)of people have been left helpless by the floodwaters. The flooding in Bangladesh is the     3     (bad)in nearly 20 years. The United Nations(UN)says that the flooding has affected at least 4 million people in Bangladesh. The floods have hit the districts of Sylhet and Sunamganj     4     (especial)hard. In these areas, about 2 million people were left cut off from areas nearby.

The flooding     5     (cause)by heavy rains. Two rivers     6     run near Bangladesh’s border with India, the Surma and the Kushiara, hit the highest water levels ever recorded. The government has made the     7     (decide)to close almost 600 schools. Some are to be closed because of flooding. Others will be turned     8     emergency shelters. Bangladesh is a low-lying country, and often has floods.     9     same is true for parts of India. But normally, most flooding happens later in the year. Scientists say that because of the climate crisis, extreme weather     10     (include)heat waves, severe storms, heavy rains, and flooding is becoming far more common.