China has made    1    (determine) efforts to strengthen envíronmental protection over the past 50 years, an officer of Ecology and Environment said on 29 April.

The officer made the remarks while addressing a video conference,    2    is a part of the Stockholm+50 international meeting in early June in honor of the 50th anniversary of the Stockholm Declaration.

China has put environmental protection high    3    the agenda since 1972 and made notable progress in resources conservation, sustainable development and international governance.

China is a world leader in using renewable energy resources, with installed capacity of hydropower, wind power, photovoltaic (光伏) power and other non-fossil energy    4    (reach) 1.1 billion kilowatts. It is also one of the fastest    5    (country) worldwide to reduce energy consumption intensity.

He also underlined continuous improvements in China's ecological environment. In 2021,    6    average concentration of PM 2.5 in cities decreased by 34.8 percent from 2015, while the surface water with good quality and forest coverage rate reached 84.9 percent and 23.04 percent    7    (respective), the officer said.

So far, China    8    (revise) dozens of reform plans related to ecological and environmental protection and revised over 30 laws and regulations. It has also promoted the international environmental agreements    9    (put) into effect, and proposed carbon peak and carbon neutrality goals, and assisted developing countries in green    10    (grow).

    1     (work) on building sites for over 20 years, Hua Shankui, 59, had never imagined he’d become an expert on planting grass. But this was     2     happened on a construction site he’s working on in Wuhan, Hubei Province.

The 18-hectare construction site of the Huashan section of Wuhan Metro Line 19 is situated near an ecological reserve. Efforts had to be made     3     (ensure) that the local environment would not be compromised. To reduce pollution, using dust nets to cover bare soil is a normal practice on construction sites. However, a     4     (decide) was made at the Huashan site to plant grass on the soil, a more eco-friendly method.

When Hua     5     (give) the task of leading a grass planting team, he knew nothing about gardening. The first question facing     6     team was what kind of grass they should plant. Hua turned to local gardeners,     7     recommended carpet grass, a species     8     (common) planted in urban landscaping.

However, months     9     planting the grass, few seeds of carpet grass grew roots as the soil at the site contains too many small stones. He tried different varieties of grass. After conducting     10     (repeat) experiments on a small piece of land, Hua found rye grass (黑麦草) to be the right species. Hua and his colleagues started to plant rye grass. Four months later, the piece of brown soil was covered in green grass, adding life to the construction site while cleaning the air.

Flash floods hit Longcaogou of Pengzhou, Southwest China’s Sichuan Province on Saturday. Seven people     1     (kill) and eight others slightly injured. Local authorities announced on Sunday, noting that some tourists     2     were camping in the dried-up river were trapped in the flood after failing     3     (escape) in time.

More than 500     4     (rescuer) are conducting a search of valleys and rivers to find lost tourists over the weekend, said local authorities, adding that at least 15 professional rescue teams,     5     (include) mountain rescue and diving rescue teams, are taking part in the rescue work. The rescue work at the scene     6     (draw)to a close.     7     Longcaogou was hit by floods in 2015 and 2017, it has not stopped tourists from visiting the area.

Meanwhile, Longcaogou has been     8     (wide) recommended on social media platforms     9     a “new Instagram-worthy location” and a “nice holiday resort.” Many bloggers posted pictures of the valley’s beautiful scenery and their trips on     10     lifestyle-sharing platforms with captions recommending that people go there.

Owing to global warming, sea levels are rising and rain forests are dying. It’s clear that humans     1    (cause)most of the warming over the past century by releasing greenhouse gases, the levels of which are     2    (high)now than at any time in the past.

Global warming is causing a set of changes to the earth’s climate     3     vary from place to place. Many people think that global warming is the same as climate change. However, scientists use “climate change” when describing the complex shifts now affecting     4    (we)planet’s weather and climate systems—in part because some areas     5    （actual）get cooler in the short term.

Climate change includes not only rising average temperatures but also extreme weather events and a range of other     6    (consequence). All of them are appearing as humans continue to add greenhouse gases to the atmosphere,     7    (change)the rhythms(节奏)of climate that all living things have come to rely     8    .

What shall we do and what can we do     9    (slow) this human-caused warming? How shall we deal with the changes we’ve already set into motion? While we struggle to figure it all out,     10     future of the earth hangs in the balance.

Global warming is a gradual increase in the earth’s temperature, generally due to the greenhouse effect    1    (cause) by increased levels of carbon dioxide and other pollutants.

Temperatures and sea levels are rising, possibly contributing    2    more storms. The rising has influenced a lot,     3    (result)in a lot of climate problems, and humans are at least partially    4    (blame). Global warming causes climate change,    5    places a serious threat to life on the earth in    6    (vary) forms like widespread flooding and extreme weather. Climate experts    7    (gather) detailed observations of different weather    8    (phenomenon) since the mid-20th and of related influences on climate. Scientists have high confidence    9     global temperatures will continue to rise for decades to come,    10    (large)due to greenhouse gases produced by human activities.