1 . Let's take a minute to think about the water we use. The human body is 60% water and we need to drink lots of water to be healthy. When we are thirsty we just go to the kitchen and fill a glass with clean water.

    1    For example, farmers, who produce the food we eat, use water to make the plants grow. When we turn on a light or switch on a TV or a computer we use energy and we need water to produce this energy.

The truth is that we are lucky enough to have clean water whenever we want，but this is not the case for many people around the world.    2    That's around one in 10 people in the world. If we drink dirty water，we can catch diseases from the bacteria and become ill. Every year over 500，000 children die from diarrhea(腹泻)from dirty water. That's around 1，400 children every day！Also，in some countries children walk many kilometres every day to get water.    3    Therefore，they don't have time to learn how to read or write and don't get an education.

    4    On this day every year，countries around the world hold events to educate people about the problems of dirty water and that clean water is something that everyone should have around the world. At one school in the UK，children between the ages of 10 and 15 walk 6km with six litres of water.    5    People give them money to do this and all the money helps get clean water to as many people as possible around the world.

3 . The Intergovernmental Panel on Climate Change (IPCC) released a report. It stated that the world is quickly running out of time to keep global warming below 1.5 degrees Celsius, the level widely agreed to be the conservative, safety-first goal to prevent serious climate harm. To get there, the world would have to cut current emissions (排放物) by 45 percent by 2030. That sounds absurdly unlikely.

But before we give in to despair, we should remember that the technology to address climate change is going along at high speed. The largest source of US carbon emissions is transportation, and a Green New Deal program for motor vehicles would be quite straightforward.

The reason is simple: With some subsidies (补贴), electric cars and buses are cost- competitive with fossil-fuel vehicles. Electric buses have gone into the market at the greatest speed, because they are a logical choice for electrification. At the end of 2018, electric vehicles were displacing about 280,000 barrels of oil demand per day. That’s more than the whole consumption of Greece.

And the electric car market is also reaching maturity, with appealing designs, longer range, and a quickly-expanding rapid charging network in many countries. It’s worth emphasizing that most of the basic systems necessary to recharge electric vehicles already exist. People often tend to assume that we would need to replace every gas station, but virtually all homes and businesses already have an electrical connection which can be easily improved for fast charging. All that is needed to go fully electric is enough battery capacity and fast charging stations to deal with long trips.

Now America would have to repair its electricity production, rails, shipping, and so on to fully decarbonize (脱碳) the transportation sector. It will be considerably more difficult than simply rooting out fossil fuel vehicles from the market.

But greening America’s vehicles would be straightforward, relatively cheap, and a huge step forward on climate. The politics of climate change are so fearful that despair can seem logical, but the first step in achieving a tough goal is the firm belief that it can be done. And this particular step wouldn’t even be that tough.

4 . The first time ever I realized that plastic was a serious matter for our planet was during a road trip in Western Australia, almost 12 years ago.

We ______ at a supermarket along the Coral Bay coast to buy some groceries and the lady at the counter told us they didn’t sell any shopping bags in order to prevent plastic in the

This was just one of the many experiences I’ve lived that made me more ______ about my impact and pushed me to adopt different habits to live and ______ more sustainably.

Our trip to Borneo was another life-changing ______ that has strengthened my resolution to a zero-waste lifestyle. While traveling in some Asian countries, we came to know that ______ drinkable water was always a challenge. So we had to travel with our water bottle, and we ______ to avoid using plastic during our trip.

Besides, we were also ______ impressed by our stay on Libaran Island. A sustainable turtle conservation ______ and the community had made big efforts to ______ the beaches and creatively re-use plastic for ten years. Despite that, the shore is ______ daily with tons of plastic coming from the tides.

Facing this global issue ______, raised in me a feeling of sadness and anger that soon turned into ______: to do as much as possible to reduce plastic in our life. Small changes can ______ a difference!

7 . In a country where over 80% of residents live in public housing, a government commitment to sustainable urban design could have huge influence. And when it’s a tropical country like Singapore where convenience and air conditioning are a way of life, the impact could be greater still.

Promising 42,000 new homes across five residential districts, the eco-town of Tengah will be the 24th new settlement built by Singapore’s government since World War II. It is, however, the first with centralized cooling, automated trash collection and a car-free town center, with which environment lovers hope to offer a roadmap for reducing carbon emissions in the Southeast Asian city-state.

The development is named as “Forest Town” by officials, due to its abundant greenery and public gardens. Once home to brickmaking factories, and later used for military training, the 2.7-square-mile site has been reclaimed by a forest in recent years. A 328-foot-wide ecological “corridor” will be maintained through its center, providing safe passage to wildlife and connecting a water catchment area on one side to a nature reserve on the other.

The project has proven a new plan for urban planners supporting green design principles and “smart” technology, according to Chong Fook Loong, group director for research and planning at Singapore’s Housing and Development Board, the agency overseeing the country’s public housing. “Tengah is a new start,” he said in a video interview, explaining that roads and parking are being pushed beneath the town center. “We’re going for the ideal concept of separated traffic, with everything underground and then the ground level totally freed up for pedestrians — for people. So, it’s a very safe environment for all.”

“We want a town that allows walking and cycling in a very user-friendly manner,” he added, saying that cycling has “taken off” in Singapore in the “last three to five years especially”. The master plan will see the installation of electric vehicle charging stations.

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8 . In a county of Britain, a pair of pig farmers has managed to feed one million bees by turning over half of their land to wildflowers. Four years ago, brothers Mark and Paul Hayward decided to fill 81 acres of their farm land with wildflowers. This week, a study found they were feeding one million bees at any time.

“This was our target when we started, to, grow enough flowers to feed a million bees on a single day.” Mark said. “We are acutely aware that bees are under threat from modern farming methods and that East England is one of the worst places where bees are seriously suffering from lack of wildflower diversity,” he continued.

“Every third bite of food you eat can come from bees and we wanted to create an operation on our farm that did not push nature out but rather hugged it-as a central part of our ecology system and our food cycle,” he said.

The farm uses all kinds of seeds which can produce many different wild plants and of course, the bees can get food from different wildflowers.

“We are taking a very small role in helping society restore a balance and this starts with plant diversity to encourage insects, bees, small mammals(哺乳动物), and birds,” said Paul. “At the end of the day, we see ourselves as caretakers of this land. Between us we have six children and we owe it to them to farm sustainability(持续性)and set an example for the generations to come,” added Paul.

According to the Bee Conservation Trust, many types of bees have seen their populations decline by 70%, and two species have become extinct in the last century.

Gill Perkins, CEO of the Bee Conservation Trust said, “Thanks to Mark and Paul, at least here, a million bees can keep living, which is of great significance for ourselves now and future.”

The earth’s plants     1     animals become endangered every day. And many of them are     2     (die) out. If nothing is done, we may find     3     (our) alone on the earth.

Wild animals live in the forests     4     are being destroyed by people. As a result, the animals are losing their habitats. Besides, animals are short of food because of     5     (pollute). Even     6     (bad), buying leads to killing, too.

I suggest that measures should be taken     7     (protect) wildlife. First, we can try to raise people’s awareness to love animals, for they are our     8     (friend). Then the government should make laws, if someone hunt, they must     9     (punish). If we do so, I am sure humans can live in harmony     10     animals.

10 . Sugar cane (甘蔗) contains around 10% sugar. But that means it contains around 90% non-sugar — the material known as bagasse (甘蔗渣) which remains once the sugar-bearing juice has been squeezed out of the cane. World production of cane sugar was 185m tonnes in 2017. That results in a lot of bagasse.

At the moment, most of this is burned. Often, it fuels local generators, so it is not wasted. But Zhu Hongli, a mechanical engineer at Northeastern University in Boston thinks it can be put to better use. "With a bit of improvement bagasse makes an excellent replacement for the plastic used for disposable food containers such as coffee cups," says Dr. Zhu.

Dr. Zhu is not the first person to have this idea. But previous attempts tended not to survive contact with liquids. She thought she could overcome that by combining the bagasse pulp (浆状物) with another biodegradable (可生物降解的) material. She discovered that the main reason past efforts failed is that bagasse is composed of short fibres which are unable to give resilience (韧性) to the finished product. She therefore sought to insert a suitably long-fibred substance.

Bamboo seemed to fit the bill. It grows quickly, degrades readily and has appropriately long fibres. When the researchers mixed a small amount of bamboo pulp into bagasse, they found that the short and long fibres combined with each other closely.

To put their new material through its paces, Dr. Zhu and her colleagues fist poured hot oil onto it and found that their invention showed resistance to oil. They also found that when they made a cup out of the stuff and filled it with water heated almost to the boiling point, the cup remained good for more than two hours. Though this is not as long as a plastic cup would last it is long enough for all practical purposes. Moreover, the new material is twice as strong as the plastic used to make cups, and is definitely biodegradable. When Dr. Zhu buried a cup made out of it in the ground, half of it rotted away within two months.