Effective measures such as building a botanic garden and a fish breeding (繁殖) station     1    (take) to protect the biodiversity in China's southwestern Baihetan Dam area so far. As the world's second-largest hydropower project, the Baihetan Dam began generating power on June 28, 2021. Among the top concerns about the dam     2    (be) the biodiversity (生物多样性) in the local region. But many local residents believe that worry is unnecessary.

Ever since experts and engineers got down to     3    (construct) the Baihetan Dam, local villagers like Lu Jieheng have been signing up to help take care of a wide range of     4     (plant). "The local birds and fish have also been well protected throughout the entire process of dam building." said Lu.

Chen Yang, a local official, said a lot of work had been done     5    (preserve) the environment, especially the biodiversity in the area. "We built a botanic garden     6     aim is to provide a home for trees more than 100 years old transplanted from the area which will be flooded," said Chen. "We have also built a fish breeding station and established a fish collection system that moves fish     7     the lower side of the dam to the upper side."

The works will continue down the road. Chen said he and his colleagues would carry on scientific research work on ecological restoration, including soil     8     (improve) on high and steep slopes, which would be     9     (high) significant for the dry-hot valley regions and the entire Jinsha River Basin in     10     long run.

Humanity’s ongoing destruction of wildlife will lead to a shrinking (萎缩) of nature, with the average body size of animals     1     ( fall) by a quarter, a study predicts.

The researchers estimate that more than 1,000 larger kinds of animals will die out in the next century. They say this could lead to the collapse (崩溃) of ecosystems     2     are important for humans to get food and clean water.

Humans     3     ( destroy) most large animals from all inhabited (有人居住的) continents apart from Africa over the last 125,000 years. This destruction will speed up     4     (rapid) in the coming years, according to the     5     (late) research.

Animal populations have fallen by 60% since 1970, suggesting a sixth mass     6     (extinct) of life on Earth is under way caused by the ruining of wild areas, hunting and farming. Scientists said this month that human society was     7     danger from the drop of the Earth’s natural life-support systems, with half of natural ecosystems now destroyed and     8     total of a million species at risk of dying out.

The future disappearance can be avoided if complete action is taken     9     (protect) wildlife habitats, and the scientists say the new work can help focus efforts on key     10     (animal).

On the afternoon of August 19, 2019, smoke and ash（灰）    1    （fill）the sky over Sao Paulo, Brazil. The smoke was coming from the Amazon rain forest, hundreds of miles away. Some parts of the rain forest had been burning for several     2     (week). Brail sent 44, 000 troops to fight against the fires. On August 25, it was reported that there had been 80, 626 fires in Brazil so far, many in the Amazon.

The Amazon is the     3     (large) rain forest in the world and it is home to millions of plants and animals and 30 million people. It is also important to the health of our earth. Its trees take in CO₂, from the air and replace it with O₂,     4     helps slow climate change.

Experts believe the fires were set     5     purpose. In general, it's against the law     6     (start) a fire in the rain forest.     7     it's not uncommon. Farmers regularly do so. They clear land so they can plant crops and raise cattle for beef production.

Since 1978, an area of some 289, 000 square miles of the Amazon     8    （destroy）. Deforestation（滥伐森林）reached the top in     9     early 2000s. Then, in 2004, the Brazilian government began to punish     10     (serious)the man-made fires and deforestation. This greatly slowed tree loss in the area.

The Qinling Mountains are one of the most biodiverse mountain ranges. According to an     1     (announce) from the Shaanxi government, local authorities     2     (shut) over 200 mines and hydropower (水力发电) plants down in key areas of the Qinling Mountains since an official rule designed to protect the rich ecosystem went into effect.

The Qinling Mountains are thought to be home to several organisms found only in China. The scenery is amazing there,    3     (vary) with the season and geography.

Wang Fang, a conservation biologist at Fudan University, said     4     would be affected by the mine and hydropower projects are not only animals but also the region’s climate patterns in the long run. He added such constructions may help the local economy, but it shouldn’t come     5     the cost of the environment.

Before the     6     (prohibit) of mining started, a series of activities had damaged its ecosystem. However, Wang was optimistic     7     the damage could be repaired. Referring to how forest areas     8     (damage) by unregulated logging in the 1990s recovered, he believed stricter laws could prove     9     (benefit) this time, too. “The species at the Qinling Mountains are quite tough, so maybe we’ll see     10     (they) recovery in 20 or 30 years.” he said.

Last month Hong Kong officers found 131,000 kilograms of broken computers, TVs and phones     1     (send) from Japan.

Things like these are called ewaste. Dealing with them is not     2     easy job because dangerous poison can be found in them. Every time an old computer breaks down, it needs to be dealt with     3     (safe). What is worse, at present, broken computer parts are usually buried. It may be     4     (hundred) of years before they are really gone in the earth. Many places in China are polluted by ewaste. Guiyu in Guangdong province is one of     5     (they). It has to deal with 1. 5 million kilograms of ewaste each year, from     6     it makes 75 million yuan. But it comes     7     a cost. Much of the poison in ewaste finds its way into the environment

Luckily, the Chinese government presents a new environmental protection law, the     8     (strict) one we have ever had. Computer companies like Lenovo and Dell will be required     9     (take) back their old computers. Hopefully, the problem with ewaste     10     (solve) in the near future.

The water is sitting in around 1000 tanks at the former nuclear power station, but the amount is growing    1    (day) as rainfall and groundwater    2    (enter) the site continue to be polluted. With an average of 160 tonnes a day being added last year, the International Atomic Energy Agency expects existing capacity will be full by mid-2022.

That is     3     the Japanese government is reportedly going to approve a strategy    4    discharging the water to the ocean, as    5     (recommend) by scientific advisers. The release would start in around 2022 and continue for decades.

The news sparked immediate     6     (complain) from Japanese fishing groups and covering warnings that China    7    (ban) Japanese seafood imports. But are people right to be worried about the    8     (environment) and health effects of releasing such a large amount of contaminated water?

Much of the existing water     9     (filter) already by a process designed to remove more than 62 radioactive contaminants. The Japanese government and Tokyo Electric Power Company (TEPCO), the firm    10    runs the site, have emphasized that the main radionuclide(放射性核) remaining is tritium(氚). Francis Livens at the University of Manchester, UK, says this is very hard to separate because it is a radioactive isotope(同位素) of hydrogen, and so part of the water molecules themselves.

The world’s largest green initiative turned 40 years this year. The national voluntary tree-planting campaign,     1     (launch) in China in 1981, has seen volunteers plant 76 billion trees across the country since then.

March 12 has been a green-letter day,     2     trees are planted and other activities are held nationwide, boosting the campaign. According to satellite monitoring results, the increase of vegetation in China accounted     3     25 percent of the world’ s total new greenery.

The national campaign has made outstanding     4     (contribute) to the global response to climate change, low carbon development and emission (排放) reduction. It has strengthened desert control and ecological governance. The campaign has become an important way for the Chinese     5     (promote) the concept of ecological progress, boosting common understanding and joint efforts.

However, despite the progress, China is still a country with a low forest cover. Though the green initiative     6     (increase) the forest cover from 12 percent to 23. 04 percent so far, it is still far from     7     (create) the beautiful ecological environment that people are demanding today.

This year marks the beginning of a new journey toward the second centenary goal of     8     ( full) building a modern socialist country in all aspects. Green development and ecological progress     9     (be) the focus of the modernization drive. Therefore, in the 14th Five－Year Plan (2021－2025) period, the campaign will continue to build     10     beautiful China and benefit all humanity.