The Northeast China Tiger and Leopard National Park, bordering Russia and the North Korea,     1     (cover) an area of 14,100 square kilometers. It is the major habitat of the country’s Siberian tigers and Amur leopards and is     2     model for cross-border wildlife conservation.

Located in the central zone of the mixed coniferous (针叶的) and broad-leaved forest ecosystems in the temperate (温带的) zone of Asia, the park possesses splendid and attractive scenery     3     different seasons. In addition, there are plentiful plant species well     4     (preserve) in the park, including thousands of medical plants, eatable wild herbs, wild fruit trees and bushes. Some of them are     5     (endanger) plant species and under state protection.

The park is a perfect place for the reproduction and     6     (survive) of birds. Every spring, various forest birds start returning from the south to prepare     7     (lay)eggs. The rich soil of the park also provides a favorable living environment for cold-blooded animals. At present, a community of flesh-eating animals and a community of plant-eating animals make up a complete food chain in the national park,     8     is extremely rare to see in China. The national park will     9     (effective) protect Siberian tigers and Amur leopards,     10     (help) them continue to reproduce and live in harmony with nature.

2 . Helping the environment and protecting our resources are very important activities.     1     There are several ways that you can help protect this planet we call home.

Use reusable bags. Plastic bags that get thrown out end up in landfills or in other parts of the environment.     2     Also, it takes decades for the bags to decompose (分解). Therefore, whether you are shopping for food, clothes or books, use a reusable bag. This cuts down on litter and prevents animals from getting hold of them.

Use reusable drink containers. Instead of buying individually packaged drinks, consider buying a reusable water bottle.     3     A lot of coffee shops, Starbucks, for example, even offer a discount to customers who use a reusable container for their drinks.

Save electricity. Use energy-efficient light bulbs (灯泡) instead of regular bulbs. They last longer, which will save you a bit of money. What’s more, make sure you turn off lights, the TV, and other devices when you are not using them. Turn off your air conditioning or heat when it’s not necessary.     4     Open your windows in the early fall or put on more clothes in the early winter.

Save water. More water is wasted than we realize. Turn off the water tap when you are brushing your teeth. Don’t turn your shower on until you’re ready to get in and wash your hair. Limit your water usage as you wash dishes.     5    

World Olive Tree Day takes place on 26 November every year. It     1    (establish) officially at the 40^th session of the UNESCO General Conference in 2019.

The olive tree, especially the olive branch, holds an important place     2     people’s mind. Since ancient times, it has symbolized peace,     3     (wise) and harmony. It is important not just to the countries     4     these noble trees grow but also to people and communities worldwide.

Protecting and growing the olive tree is     5     increasingly urgent thing as the world fights against climate change. The conservation of cultural and natural heritage (遗产) is one of UNESCO’s     6     (center) goals, and marking World Olive Tree Day strengthens the efforts to achieve it.

World Olive Tree Day is set up     7    (encourage) the protection of the olive tree and stress the values it symbolizes,     8     (inspire) people to appreciate its important social, cultural, economic and environmental significance to humans.

There is much to learn, share and celebrate on World Olive Tree Day, and UNESCO encourages everyone to participate in     9     (activity) such as debates, conferences, cultural events and exhibitions     10    (organize) worldwide.

5 . An Edinburgh inventor has created a fully biodegradable bottle that is made from paper and a secret combination of plant materials, and it could help save the planet's oceans from plastic pollution and can also be eaten by sea creatures.

The Edinburgh-based Durham University chemistry graduate James Longcroft started a non-profit bottled water company two years ago. He wanted to put all his profits into a charity that provided clean drinking water to countries in Africa.

However, after concerns about the environmental impact of plastic bottles, Mr. Longcroft decided the Edinburgh and London-based company, Choose Water, should go plastic-free. So he came up with a new type of water bottle—a waterproof paper bottle.

“The outside is made from recycled paper, but the inside has to be waterproof, and provides strength so the bottle would keep its structure, and keep the water fresh,” Mr. Longcroft said.

When the bottle is thrown in the ocean the degrading process begins within hours leaving the bottle totally degraded (分解)within weeks. The steel cap breaks down within a year.

Mr. Longcroft now believes these novel bottles could revolutionise the industry and says the cost of producing the bottle is around 5 pence more than one made from single-use plastic.

“The main difficulty we face is breaking into a saturated (饱和的)market and competing with an old industry,” he said. “Changing an industry will be a big uphill battle, but with the support from the public, we will change the way we look at bottled water.”

Researchers warn that eight million tonnes of plastics currently find their way into the ocean every year which will stay in the environment for centuries.

“We really want to get our bottles on shelves and into people's hands as soon as possible—if we can stop even one plastic bottle ending up in the environment it will be worth it,” said Mr Longcroft.

8 . My husband and I wanted desperately the instant transformation from typical consumers to eco-conscious people．We switched our light bulbs to CFL(compact fluorescent light)bulbs to conserve energy．We went about the house turning off lights and unplugging appliances that weren’t in use．But the rate of global warming exceeded our snail’s pace conversion to greenhood．So I pressed onward．

I decided to put veganism(素食主义)at the top of our agenda．Vegans refuse any animal flesh or commercial goods made from any animal byproducts such as milk or fats．All the family applauded this option except for my husband．Some kind of animal needed to sacrifice its dear life for his meal or it wash’t dinner．I cooked up a storm，struggling to prepare nutritious meals dominated by not-so-obvious vegan dishes like bean burritos and high-fiber vegetable stir-fry．It took a few days before he realized that he hadn’t been eating any meat．

“I feel like eating beef．”he announced．So that night，I took full advantage of a zucchini (一种南瓜)，cut it into chunky(粗大的)pieces and cooked them．Then I covered them with spices．My beef-starved husband had some and a curious look crossed his face．

“Where’s the beef?”

“Living peacefully somewhere on an open plain where it belongs．”

“I knew it”he murmured．“You’ve surely made great contributions to the boom in cattle.”His taste buds were developed completely around the flavor of every kind of animal：cattle，pigs，deer，lamb，chickens and ducks．Converting him was like feeding grass to a lion．

I’m all for preserving our planet，but what good would it do to save the earth for tomorrow’s generation if today’s died of starvation? The next day，we went out for burgers．I was very careful to place the paper bag into our recycling bin．

9 . Kamikatsu, a small town in Japan, has shown the world that our garbage has far-reaching effects, and not just on our environment.

The experiment in going zero waste started when the town built a new incinerator 20 years ago. But almost immediately, the incinerator was determined to be a health risk due to the poisonous gases when garbage was burned in it. It was too expensive to send waste to other towns, so locals had to come up with a new plan. Then the Zero Waste Academy was born, which helped perform this plan.

Now Kamikatsu people separate their waste into 45 different categories. But in the beginning, it wasn't easy to convince local people to do all this work, and there was some pushback. Only after that initial education period did most residents come on board.

This is all great news for waste reduction of course, but it has also had some unexpected social benefits as well. Like much of Japan, Kamikatsu's population is aging, and about 50 percent of the locals are elderly. The fact that the whole community takes their trash in to be recycled has created a local action and interaction between generations.

That idea has been purposefully expanded to include a circular shop where household goods are dropped off and others can take them, and a tableware "library" where people can borrow extra cups, glasses, silverware and plates for celebrations.

"The elderly see this not as a waste-collection service, but an opportunity to socialize with the younger generation and to chat. When we visit them, they prepare lots of food and we stay with them for a while, we ask how they are," Sakano, the founder of the Zero Waste Academy, said.

Sakano's ideas are truly revolutionary if you think about it. She's proving that community can be found through handling the stuff we no longer want and need.

Today, Mount Qomolangma’s peak is not a lonely place any more. Over 3,500 people have     1    (successful) climbed the mountain over the past years. Meanwhile, climbers have complained about     2    (wait) for hours in the bottlenecks.

In fact，the dangerous     3    (crowd) aren’t the only problem. All those climbers need to bring a lot of gear (设备), much of which ends up     4    (leave) on the mountain. It is becoming the world’s     5    (tall) rubbish dump.

But the good news is     6     some mountaineers have started to clean up Qomolangma. Mountaineers Paul and Eberhard are part of Eco Everest Expedition, which has been cleaning up rubbish since 2008. So far they     7    (collect) over 13 tons of garbage.

Some of that rubbish is even being used for     8     higher purpose. As part of the Mount Everest 8848 Art Project, a group of 15 artists from Nepal collected 1.5 tons of garbage. They’ve changed the cans and oxygen tanks     9     74 pieces of art that have already been exhibited in Nepal’s capital. Part of the profit from sales     10    (be) available for the Everest Peakers Association which has helped collect rubbish off the mountain.