4 . Eradajere Oleita thinks she may have a partial solution for two of their country’s persistent problems: garbage and poverty. It’s called the Chip Bag Project. As a student and_________she is asking local snack lovers a_________: Rather than throw empty chip bags_________into the trash,_________them! Then she can turn them into sleeping bags for the homeless.

Chip_________drop off their empty bags at two_________: a print shop and a clothing store, where Oleita and her volunteer helpers collect them. After they sanitize (清洁) the chip bags in soapy hot water, they slice them open,_________them flat, and iron them together. They_________fillings to line the insides.

It takes about four hours to_________a sleeping bag, and each takes around 150 to 300 chip bags, depending on whether they’re single-serve or family__________. The__________is a sleeping bag that is “waterproof, lightweight, and easy to carry around,” Oleita told theNews.

Since its start in 2020, the Chip Bag Project has__________more than 800, 000 chip bags and,__________last December, created 110 sleeping bags.

Sure, it would be__________to raise the money to buy new sleeping bags. But the project is only half the__________for Oleita whose family moved to the United States from Nigeria a decade ago with the hope of attaining a better life — and her fellow volunteers. “We are dedicated to making an impact not only__________but environmentally,” she says.

And, of course, there’s the symbolism of recycling bags that would__________land in the trash and using them to help the homeless. It’s a powerful__________that environmental__________and poverty often go hand in hand. As Oleita toldlocalnews. com,“I think it’s time to show__________between all of these issues.”

6 . HOW BIG should a business team be?It is an enormously important issue for companies, Teams that are too small may lack the skills required to get the job done:teams that are too big may be impossible to co-ordinate.

Robin Dunbar.an anthropologist at Oxford University,has done a lot of work on primate(灵长目）groups.His argument is that the size of the group is linked to the size of the brain.With their large brains,humans can cope with larger bands,A larger social group has many advantages,allowing for greater protection and specialization.

Whereas 150 is sometimes referred to as the"Dunbar number",the academic himself in fact refers to a range of figures.He observes that humans tend to have five intimate friends,15 or so good friends,around 50 social friends and 150-odd acquaintances.

Running a larger network can be difficult.The armed forces have spent more than 1,000 years experimenting with unit size.A Roman centurion(百天长）oversaw 100.The modern American army company has 180 members.Britain's equivalent numbers 120.These are rough estimates,rather than fixed figures.But it is striking that many group activities seem to be close to a Dunbar number. The Special Air Service of Britain has four-man patrols;when your life depends on it,you need to have absolute trust in your colleagues.As a result,such groups are limited in size.

For much of economic history,work was conducted in small units by peasants,tenant farmers and craftsmen.The coming of powered machinery enabled production at a much larger scale,with workers crowded into factories.These days the rise of the service economy means that workers are no longer concentrated in such large groups.

This may not be a bad thing.It was easy for employees in large factories to regard remote company owners as "them"rather than"us".The modern company may settle on a model with a small group of"core"workers and a larger group of contract workers.The result may be more united within the core staff but the non-core staff may be less well treated.The small core teams may work effectively.The big question will be the effect on morale of those outside those teams.

7 . A movie about Mount Qomolangma I saw on a flight inspired me to climb mountains.When I saw the climbers got _______ in a storm there, I immediately knew I had to start climbing. It was not the _______ most people had to that film because none of them survived.

I _______ to climb all the highest peaks in Europe in 2017. Growing up in Sweden, I was always _______ to be outdoors by my father, but I wasn’t a _______ adventurer--I just wanted to be a _______ for girls and to tell a story that had never been told.

There is no _______ definition (定义) of a mountain. In Holland, Belgium and Denmark, the highest peak is really just a small hill. You could park your car on the top. It felt a bit like _______, but I decided I would climb them _______.

Climbing mountains is an experience that is beyond ________. You are in a beautiful environment and, when you reach the top, you feel ________, but also you have to climb down, which is when most accidents happen. ________, I don’t climb mountains that I am not totally ________.

I wanted to ________ the project at home, on Sweden’s Kebnekaise (2, 097m). I climbed it with my camera assistant. I was wearing a superhero suit. Once I was at the top we did a ________--it was like a day on the job; it didn’t seem as ________ as I’d hoped. But when I put it online and people started ________ me, I felt ________. Thanks to climbing, it’s made me so much ________, physically and mentally.

My ________ now is always to have a mountain in my calendar. I will climb Mount Qomolangma one day, when I’ m ready.

8 . Examples of effective conservation of places matter to the world. They range from the 1960s Nubian campaign to safeguard Ancient Egyptian monuments from the waters of the Aswan Dam to the removal in 2018 of the Belize Barrier Reef from the List of World Heritage in Danger. Conservation is the core purpose of the World Heritage Convention and it may also be its biggest challenge.

The following example shows how successes at specific sites now serve as models for conservation and sustainable (可持续性) development. A year after Vienna was included on the World Heritage List in 2001, the World Heritage Committee (WHC) expressed concerns about the architectural solutions and height of four planned towers of the Wien-Mitte project. This development project, close to the Historic Centre of Vienna in the site’s buffer zone, the one that lies between two or more other areas, affected the urban scale (规模) and visual effects in and around the property (地产). As a result of the Committee’s concerns, Vienna changed its building codes and launched a new design competition for the Wien-Mitte project to work out architectural plans with reduced size in keeping with World Heritage protection.

The successful practice inspired the government of the city to invite over 600 experts and professionals from 55 countries to an international conference on World Heritage and contemporary architecture, held in Vienna in May 2005. The global discussion that followed, detailing an approach to managing conservation and development, was recorded in the UNESCO Recommendation in 2011.

The Recommendation put forwards an all-rounded and combined approach to balancing urban heritage (遗产) conservation and economic development, arguing that active protection and management of urban heritage supports the goal of sustainable development.

The Recommendation supports the harmonious combination of contemporary involvement into the historic urban framework while holding on to values linked to history, memory and the environment.

10 . In a major medical breakthrough, Tel Aviv University researchers have “printed” the world's first 3D vascularized (有血管的）engineered heart using a patient’s own cells and biological materials. Their findings were published on April IS in a study in Advanced Science.

“This is the first time anyone anywhere has successfully engineered and printed an entire heart,” says Prof. Tal Dvir of Department of Materials Science and Engineering, who led the research for the study. “This heart is made from human cells and patient-specific biological materials. In our process, these materials serve as the bioinks, something made of sugars and proteins that can be used for 3D printing of complex tissue models，” Prof, Dvir says. “People managed to 3D print the structure of a heart in the past, but not with cells or with blood vessels (血管).Our results demonstrate the potential of our approach for engineering personalized tissue and organ replacement in the future.”

According to Prof. Dvir，the use of “ native ” patient-specific materials is important to successfully engineering tissues and organs.

The researchers are now planning on culturing the printed hearts in the lab and “ teaching them to behave” like hearts, Prof. Dvir says. They then plan to transplant the 3D-printed heart in animal models.

“We need to develop the printed heart further，” he concludes. “The cells need to form a pumping ability ； they can currently contract (收缩），but we need them to work together. Our hope is that we will succeed and prove our method’s efficacy (功效)and usefulness. “Maybe, in ten years, there will be organ printers in the finest hospitals around the world，and these procedures will be conducted routinely. ”