With the     1     (develop) of industry, air pollution is getting more and more serious. In Beijing, many people     2    (suffering) from different kinds of     3    ( ill ) because of air pollution.

Air pollution    4    (cause) by the following reasons: about half of the problem is caused by vehicles(车辆). There are more and more cars and buses on the roads,     5     give off poisonous gases. 25% of air pollution is caused by factories. Another factor     6    (be) the smokers. Smoking not only does harm to their health but also to others’.     7     these, about 10% of air pollution is caused by other reasons.   

We should take some measures     8    (fight) against pollution. New fuel can be used to take the place of gas. We can plant more trees. If everybody realizes the importance of environmental     9     (protect) and does something to stop pollution, the problem will     10    (solve).

China’s research icebreaker Xuelong,     1     126 crew members aboard on the 35th Antarctic research mission, on Thursday local time left the Zhongshan Station on     2     (it) way back to China.

Snow Eagle 601, China’s first fixed­wing aircraft for polar flight, on Thursday night also departed from the Antarctic after     3     (complete)all assignments.

Xuelong,     4     arrived near Zhongshan on Feb. 9, supplied the station with fuel oil, and then picked up summer expedition   team members   at   the   Kunlun, Taishan and Zhongshan stations, as well as     5    (member)of the fixed­wing aircraft project.

Sixteen members of the Kunlun team     6    (previous)completed all scientific expeditions at Dome Argus (Dome A), the South Pole’s highest icecap. They，together with 21 members of the Taishan team,     7    (return)to Zhongshan on Feb. 8.

The Zhongshan team completed tasks including installation of and tests for LiDAR, drilling of ice bedrock, atmospheric sounding     8    (observe)，surveys of birds and aerial exploration carried out by the fixed­wing aircraft.

As the summer expedition team at Zhongshan left, 19 members would stay for winter expeditions.

Also     9    (know) as the Snow Dragon, the icebreaker carrying a research   team   set   sail   from Shanghai on Nov. 2   last year, beginning     10     country’s 35th Antarctic expedition. It is expected to arrive in Shanghai in mid­March.

Right now， most people's attention is on the COVID﹣19 pandemic. In     1    way， this pandemic is also warning us to protect our planet Earth.

World Earth Day， the international movement aiming     2    protecting and improving Earth's environment， is celebrating its 50th anniversary on April 22. For Earth Day 2020， the theme is climate action.    3    （celebrate） this， the Earth Day Network organized the Great Global Clean﹣up event. The network hoped that this would be the largest volunteer event in history， with people from all over the world    4    （set） up events to remove billions of pieces of trash from green spaces， urban communities and waterways. But due to the current ban on public gatherings and lockdown measures in many affected countries， clean﹣up events     5    （postpone）.

That said， the occasion will still continue in a digital way. "    6    it be coronavirus or our global climate crisis， we cannot shut down.    7    ， we must shift our energies and efforts to new ways to mobilize （动员） the world to action. " said Earth Day Network President Kathleen Rogers.

While the event may not reach its originally     8    （plan） grandeur（宏大）， Earth Day 2020 could play a role in helping us sustain     9    （environment） friendly changes， such as practices like teleworking and video conferencing     10    have become more prevalent （普遍的） in this time.

As we all know, the temperature of the earth has risen. That probably does not seem much to you or me, but it is a rapid increase when     1    (compare) to other changes. There is no doubt     2    it is human activity that has caused this global warming rather than a random but     3    (nature) phenomenon.

Some byproducts of the burning of fossil fuels are called “greenhouse” gases, the most important one of which is carbon dioxide. More heat energy tends to be trapped in the atmosphere     4    (cause) the global temperature to go up.

Some scientists accept the idea that the problem begins when we add huge    5    (quantity) of extra carbon dioxide into the atmosphere. However, some scientists are opposed     6     this view and believe that we should not worry about high levels of carbon dioxide in the air.

Everyone knows, the global warming connects the nature. In the text The Power of Nature, we are also aware that the writer has an exciting job.     7    (collect) and evaluated the information, the writer helps other scientists to predict where lava from the volcano will flow next and how fast. His work has saved many lives because people in the path of the lava can be warned to leave    8    (they) houses.     9    (fortunate), they cannot move their homes out of the way, and many houses have been covered with lava or burned to     10     ground.

Rising sea levels are likely to reduce half of the world’s beaches by the end of this century. Climate scientists predict that 50% of beaches along the world’s coastlines will probably disappear over the next eight decades if climate change    1    （continue）on its current path. They warned that the shorelines of many    2    （crowd）areas and tourist hot spots are threatened by erosion（侵蚀）from climate change and    3    （sharp）rising sea levels. Areas at risk of    4    （disappear）forever include the popular beaches in Australia’s Surfers’ Paradise,    5    islands of Hawail and the Costa del Sol in Spain.

It is reported    6    countries like The Gambia and Guinea Bissau in Africa are predicted to lose over 60% of their beaches.    7    （compare）with other nations, the nation to be worst affected is Australia,    8    12,000 km of coastlines could end up underwater forever. Large numbers of beaches in the world are being eroded. This could result in the near    9    （extinct）of beaches by the end of the century. The researchers said we could reduce emissions and manage our coastlines better    10    （save）beaches.

Ant Forest     1     (found) by Ant Financial Services Group has received a 2019 Champions of the Earth award, the UN’s highest environmental honor. Ant Forest improves greener lifestyles by inspiring users     2    (reduce) carbon emissions in their daily lives and better protect the environment.

Ant Forest users are encouraged to record their low-carbon footprint through daily actions like taking public transport or     3     (pay) bills online. For each action, they receive “green energy” points. When they collect     4     certain number of   “green energy” points, an actual tree is planted.

Users often view     5    (image) of their trees in real-time via satellite. In addition     6     tree planting, users can choose to protect certain size of conservation land on Ant Forest platform,     7     is also exploring creative solutions to alleviate poverty (扶贫) and improve the lives of local people.

Since     8    (it) launch in August 2016, Ant Forest and its NGO partners     9    (plant) around 122 million trees in some of China’s driest areas: Inner Mongolia, Gansu, Qinghai and Shanxi. The trees cover an area of 112,000 hectares.     10    ( natural ), the project has become China’s largest private sector of tree-planting initiative.

The 21st century is dominated by more technology-oriented inventions than before. The 20th century     1    (see) man land on the moon. The 21st century will witness man landing on several planets. The first will be Mars, also     2    (call) the Red Planet. As planned by NASA, the mission can be achieved by 2030. That will set a precedent(先例) for explorations by future generations. Furthermore, increased investment in research is likely     3     (lead) to the discovery of a vaccine for AIDS.

Technology is advancing fast. Social media at present acts as one of the leading 64.    4    (source) of news and interaction,     5     has a negative influence on traditional media,     6    (particular) print newspapers. Social media will soon take over the market.

Mobile phones will play a greater role     7     the purchase of goods, as well as the withdrawing and depositing of money. Electronic money will replace paper money. In addition, with declining oil reserves across the world, electric cars will replace petrol cars in a few decades. As     8     result, there will be a major shift in job trends.

Global warming will become an even     9    (big) problem, with sea levels     10    (continue) to rise. Freshwater sources will be polluted. Fresh water will become a major issue. Hence environmental destruction will increase greatly.

Chinese net users have found a new way to battle desertification by playing virtual (虚拟的) planting games. Ant Forest,     1     is under Ant Financial of the Alibaba Group, told the Global Times that they had planted over 50 million trees covering about 507 square kilometers across China from 2016 to 2019.

Ant Forest is the first such game in China. In the Ant Forest plan, any activity     2    (consider) low carbon, including walking, taking public transport and online payments, will be converted into virtual “green energy”. The energy will be used to grow a virtual tree in the “forest” of the     3    (user). They exchange     4    for a real tree by paying the corresponding energy. Ant Forest will plant the real trees in spring and autumn each year     5    the help of local authorities in the desert areas. This way of planting trees    6     (recognize) on October 23, 2018 by the National Afforestation Committee as    7    means for citizens to fulfill their obligation of planting trees.

The Chinese government attaches great    8     (important)to the protection of ecosystems. China aims     9    (increase)the forest cover to 23 percent by 2020, and to 26 percent by 2035. A new study using data from NASA satellite shows that the Earth becomes    10    (green) as a result of ambitious tree-planting programs in China.

There is some good news for the environment. The British government has banned the use of plastic particles (微粒）in cosmetics (化妆品）and other personal care products.

Plastic microbeads or tiny solid plastic particles     1     (use)mostly in cosmetics production, face washes, toothpastes and other products. When we use these things, the plastic microbeads get into our pipes that carry water, and     2     (eventual)end up in the ocean. Plastic in the ocean puts fish and plants     3     danger, and even causes them to die.

    4     (official)say that the ban will prevent water pollution and in the meantime help with the     5    （protect)of ocean life. "The ban will stop billions of pieces of plastic entering our ecosystem, thus     6     (help) to conserve our precious seas and oceans, "Former Prime Minister Theresa May ever wrote on Twitter.

Therese Coffey, then the Environment Minister of the UK, said, "The world's seas and oceans are some of our most     7    (value)natural things. And     8    we do now is to deal with the plastic that causes great damage to our sea life. "He also added, "Actually,     9     amount of natural green things that we can take advantage of     10    (make)personal care products is huge, and therefore the use of plastic microbeads should be abandoned. ”