Having trouble recognizing one furry panda from another? A facial recognition app will make it easy    1    you. The image analysis research kicked off in 2017. A database now contains about 120,000 images and 10,000 video clips of giant pandas. Close to 10,000 panda pictures have     2    (analyse) and marked.

    3    (use) the database, researchers are able to carry out automatic facial recognition on panda faces     4    (tell) one animal from another. The app and database will help us gather more precise and well-rounded data on the population, distribution, ages, birth and deaths of wild pandas,     5    live in deep mountains and are hard to track. It will     6    (absolute) help to improve efficiency and effectiveness in conservation and     7    (manage) of the animals.

The giant panda was discovered 150 years ago and named in the city of Ya'an, Sichuan. It     8    (remain) one of the world's most endangered species. According to the statistics, last year     9    number of captive pandas was 550 globally as of November. Fewer than 2,000 pandas live in the wild, mostly in the    10     (province) of Sichuan and Shaanxi.

Some misunderstanding is putting shark populations at risk now. Thousands of sharks are dying as     1     result of people's false beliefs.

Female sharks need males to make babies. Some female sharks have the ability to produce a baby by themselves and hove young sharks     2     a male shark. That's something     3     (common) seen in plants and insects like ants and bees. Shark fins have medical function. Traditionally, shark fin soup     4     (believe) to have health benefits and is quite special in China     5     modern scientists point out that shark tissue (组织) can be extremely high in poison. What's more, bunting for sharks kills up to 100 million animals each year,     6     (endanger) several different species.

If you're bitten by a shark, you will lose is unimaginable. You are more than twice as likely     7     (die) from a lightning strike as from a shark bite, according to the Florida Museum's International Shark Attack File (ISAF). “Even if bitten by sharks, the large     8     (major) of people survive,” says Dr. Chapman. There     9     (be) sixty-six unprovoked (无端的)y shark bite incidents around the world in 2018, only six of     10     were dangerous, according to the ISAF.

Earth is most likely experiencing its sixth mass extinction. The planet has been through at least five such disaster     1     , but this is the first one in human history-and the first one with human fingerprints.

A report by the World Wildlife Fund       2     (offer) details about this decline, which has cut the planet's vertebrate(有脊椎的) wildlife populations       3     average of 60 percent in just 40 years. Habitat loss is the main threat     4     many endangered land animals. “Science shows us the cruel     5     (real) that our forests oceans and rivers are suffering at our hands now,” says Marco Lambertini, director of WWF International, in a statement. “Inch by inch and species by species decreasing wildlife numbers and wild places are an indicator of the huge influence and     6     (press) we are putting on the planet.”

“The statistics are     7     (scare), but all hope is not lost,” says Ken Norris, science director for the Zoological Society of London. The report exposes some environmental     8     (problem) around the world, but it also throws light on the ways we can still protect and recover what     9     (leave) .We have an opportunity to design a new path forward     10     allows us to co-exist with the wildlife we depend upon.

It’s time to reconsider food. Around the globe, food problems threaten wildlife, wild places and the planet itself. Today, 7.3 billion people consume 1.6 times     1    the earth’s natural resources can supply. By 2050, the world’s population will reach 9 billion and the demand for food will double.

So how do we produce more food for more people without     2    (expand) the land and water already in use? We can’t double the amount of food.     3    (fortunate), we don’t have to—we just have to double the amount of food available now instead.     4    short, we must freeze the footprint of food.

In the near-term, food production is enough     5    (provide) for all, but it doesn’t reach everyone who needs it. About 1.3 billion tons of food     6     (waste) each year—four times the amount     7     (need) to feed the more than 800 million people who are     8    (hunger).

By improving efficiency and productivity while reducing waste and shifting consumption     9     (pattern), we can produce enough food for everyone by 2050 on roughly     10     same amount of land we use now.

The eco-friendly tea gardens in Pu’er, Southwest China’s Yunnan Province, have resulted     1     many environmental and economic benefits for the city.

The tea gardens produce green, organic, safe, and high-quality tea that is characterized by growing many plant species without     2     use of fertilizers or pesticides (化肥或农药).

Such gardens are     3       (benefit) to the ecosystem, the protection of soil and water, the microclimate within the garden, and the sustainable development of the tea industry,     4     is Pu’er’s No. 1 pillar industry.

Requiring low consumption (消耗) of natural resources, tea production     5       (regard) as a green industry with high added value. That means more than half the city’s yearly GDP comes from tea.

In 2010, the government carried out a project to build eco-friendly tea gardens,     6       (change) all such tea gardens across the city in the following three years.

Each tea garden is required     7       (plant) eight to ten species that will provide shade for 30 percent of each 0.067 hectare plot.

Ever since the project was carried out, it     8       (improve) the environment in the tea gardens, and prevented the use of chemical fertilizers and pesticides. The project has also helped to     9       (continuous) improve the quality of tea, raising the earnings of businesses and tea     10       (farm).