A new group of free employees have been added to a French workforce. So far, a theme park in western France 【小题1】 (employ) six birds, more exactly six crows, to collect and deal with garbage—mainly cigarette ends 【小题2】 other small pieces. The birds take the collected trash to special bins where they can receive bird food in exchange 【小题3】 putting away the litter.

Park president Nicolas said, “The purpose of employing the crows is 【小题4】 (educate) people to take up their social responsibility. Since the birds are able to do 【小题5】we are much more able to do than them, should we do this by ourselves?”

Crows have long been observed for their various amazing 【小题6】 (display) of intelligence. They are one of the 【小题7】 (smart) groups of animals on earth, with remarkable problem solving, tool making, and deductive (演绎) reasoning skills.

In addition to inspiring humans to pick up trash, the clever crows currently 【小题8】 (work) at the park are pretty excited to put their wisdom to work.

“It has become【小题9】 exciting game for them,” Nicolas says. “They pick up the trash on the ground, and every day they【小题10】 (reward) for what they have done.”

With the days【小题1】( grow) colder, Pasang has made preparations for the winter by purchasing【小题2】generous amount of natural gas to warm his home.

“In the past, we burned cattle dung (牛粪) for heating. The rooms would be covered with dust, and the sky would sometimes get gray,” said Pasang, a resident of Lhasa, capital of southwest China’s Tibet Autonomous Region.

His home was connected by natural gas pipelines seven years ago. “With the gas, my home is warmer, and we are also contributing【小题3】bluer skies,” he said.

Now, the signature blue skies dotted with white clouds not only give local people a breath of fresh air but are also a vital part of the region’s charm for visitors from home and abroad. The wide use of natural gas is one of the keys behind the clean air in Tibet. “In Lhasa’s case, so far natural gas【小题4】(adopt) for heating in more than 90 percent of its urban area,” said a local company in charge of natural gas supplies.

Amid the country’s boom of new energy vehicles (NEVs),Tibet is also popularizing NEVs while phasing out (淘汰) older cars with high pollution and high energy【小题5】(consume).

Electric cars are also gaining【小题6】(popular) for their eco-friendly features and lower costs. Penpa, another resident in Lhasa, said he and many of his friends have replaced their traditional vehicles with electric ones. “Everyone should make an effort【小题7】(keep) the air clear in Lhasa,” Penpa said.

Atop a mountain over 5,000 meters above sea level, the Ali observatory — more than 1,400 km from Lhasa — is still frequented by astronomy lovers【小题8】brave (勇敢面对) a zigzagging road to get a much【小题9】(close) look at the stars.

Zhou Yunhe, director of the observatory, said more than 3,100 tourists have visited the observatory since the turn of the year.

Despite the impact of COVID-19, Tibet received 36.89 million tourists in the first three【小题10】(quarter) this year, up 15.2 percent year on year, and tourism revenue surged 26.6 percent, official data showed.

Melbourne Girls' College is getting rid of 【小题1】 (it) bins and asking teachers and students to take their rubbish home to encourage them 【小题2】 (move) towards zero waste. Even the schools 20 recycling bins have been removed, because the college's plastic and glass recycling is now sent to landfill. Paper can still be recycled via the school.

As part of the campaign, volunteer students conduct【小题3】(day) non-compulsory food inspections in which children 【小题4】 (reward) for bringing “zero waste” lunch boxes. The rubbish 【小题5】 (take) home may still go to landfill via their home bins, but teacher Paula McIntosh says 【小题6】 new policy will help persuade families to buy fewer packaged items and reuse containers. Though some parents may not have the time or means to avoid food in single-use packaging, it's trying to get more people to avoid it.

She says the campaign of Swedish teenage climate activist Greta Thunberg recently【小题7】(inspire) the school, showing that the acts of one person can lead 【小题8】 enormous change.

Principal Karen Money says: “We talk a lot, as educators, about those serious 【小题9】(problem) the world faces, and 【小题10】 we don't start taking some action, then it's just empty.”