Coca-Cola    1     (rank) the world's No.1 plastic polluter by Break Free From Plastic and     2     (it) bottles were the most frequently found on beaches, rivers, parks and other litter sites. Last year it was the most     3     (frequent) littered bottle in 37 countries out of 51 surveyed.

The annual audit(审计)，    4     (undertake) by 15,000 volunteers around the world, identifies the largest number of plastic products from global brands found in the highest number of countries. This year they collected 346,494 pieces of plastic waste, 63% of     5    was marked with a consumer brand.

“The world's top polluting corporations claim to be working hard to solve plastic pollution,     6     they are continuing to pump out     7     ( harm) single-use plastic packaging,” said Emma Priestland, Break Free From Plastic's global campaign coordinator (协调员). Priestland said the only way to quit the growing global tide of plastic litter was to stop production.

Coca-Cola came under fire from environmental campaigners earlier this year when it announced it would not abandon plastic bottles, saying they     8     (be) popular with customers. In March, Coca-Cola, PepsiCo, Nestle and Unilever were found to be responsible     9     half a million tonnes of plastic pollution in six developing     10     (country) each year in a survey.

Fifteen elephants are approaching the Chinese city of Kunming. Altogether the animals     1     (cover) 500km from their habitat in a nature reserve near the borders with Myanmar and Laos. And they are now near     2     city of 6.6 million people. They have travelled along highways     3     through farms over the past few months. And their journey has been attracting the attention of the Chinese public.

Experts are now doing all they can     4     (keep) the elephants away from Kunming city. They are setting up barriers along the way,    5     (hope) to get them to go back towards the nature reserve. No one knows     6     the animals have walked so far away from     7     (they) original habitat. One reason could be a decline in the amount of edible (可食用的) plants in their reserve, especially     8     (supply) of their favourite foods. Another reason could be a rise in numbers in the wild elephant population in the area, from 193 in the 1980s     9     around 300 today. A further     10     (possible) is that the elephants, leader could have led them astray (迷路).

There     1    (be) a dramatic rise in the number of extreme weather events over the past 20 years,    2    (cause) largely by rising global temperatures,according to a new report from the United Nations. From 2000 to 2019, there were 7,348 major natural disasters around the world,    3    (result) in USD 2,970 billion in economic loss．Much of this increase can be due to climate change. The findings show a critical need     4     (invest) in disaster prevention.

A male elephant that broke away from the wandering elephant pack     1    ( send) back to its forest home on Wednesday in Xishuangbanna Dai Autonomous Prefecture, southwest China's Yunnan Province, local authorities said.

Yuxi City headquarters in charge of monitoring the pack's migration (迁徙) took the     2     (decide) early Wednesday morning     3     ( prevent) the lone animal from entering heavily populated areas. At 3 p. m.，the elephant was caught and returned to the nature reserve. The animal appeared     4     (health) and did not suffer from any injuries.

The pack of 15 wandering wild Asian elephants travelled about 500 kilometers north from their forest home. The male elephant separated from the pack on June 6, and moved around in the     5     (city) of Kunming, Anning and Yuxi, with an activity area of 140 square kilometers and a walking distance of 190 kilometers. It had relied mainly on     6     was provided by the locals. The     7    (remain) 14 elephants have been moving southward recently but are still far from the reserve.

Asian elephants are     8     A-level state protection in China, where they are     9     (most) found in Yunnan. Thanks to determined protection efforts in recent decades, the wild elephant population in     10     province has grown to about 300, from 193 in the 1980s.

As we all know, the pollution of air, water and soil are the most serious problems. The     1     (pollute) air, which causes diseases and deaths, does great harm     2     people’s health. What’s more, vegetation (植被) has been greatly reduced with the rapid     3     (develop) of the modern city.     4     (protect)the environment, governments of many countries have done a lot. In the past few years, legislative (立法的) steps     5     (introduce) to control air pollution. Governments are playing the most important role in     6     (environment) protection today. In my opinion, the government must take even more concrete measures. First, it should let people fully realize     7     importance of environment through education. Second, much more efforts should be made to put the population planning policy into effect, because more people means more pollution. Finally, those     8     destroy the environment intentionally (有意地) should be     9     (severe) punished. Everyone should be aware that     10     (destroy) environment means destroying mankind themselves.

    1     February 3, 1931, the peace of New Zealand bay region was spoiled when the area     2     (hit) by the worst earthquake in New Zealand’s history.     3     10: 46 am, the quake hit     4     a magnitude of 7.9 on the Richter scale (里氏震级). The quake lasted for two and a half minutes. Many people died in     5     earthquake.

A fire     6     (break) out immediately after the quake. The fire started in a chemist’s shop and     7     (spread) quickly. Then the Fire Department in Napier came     8     (help), but they were at     9     loss to control the fire as a result of     10     (lose) their water supply. However, the water supply in Hastings was still usable, allowing them     11     (fight)back against the fire.

The force of the earthquake     12     (destroy) many of the city’s famous landmarks. A popular tourist spot was     13     (complete) ruined. Most of the major buildings in the city     14     (destroy). Roads and     15     (communicate) across the whole area were cut.

Some scientists say there will not be enough land for Earth in the near future. So some other places should    1     (find) to live. While some scientists are considering     2     (build) communities on the Moon and Mars, other scientists feel independent space stations could bring many more     3     (benefit).

So what is wrong    4     the Moon or Mars? Firstly, the distances are a problem. The Moon is about 384,400 miles from Earth. Mars is over 55 million miles away. The journey to the Moon takes about eight days, and the one to Mars takes from six to eight months. It will be both time-consuming and    5     (danger) to get settlers to these distant places. Moreover, it takes a message up to 44 minutes to go from Earth to Mars,     6     makes fast communication impossible. However,     7     space station circling Earth is just a few hours away. This makes the trip much cheaper and communication    8     (relative) easy. Furthermore, the    9     (absent) of light at night on the Moon and Mars isn’t a good thing either. On a space station, however, the sun’s energy can be made available     10     (support) people living there 24 hours a day.

Lijiang was made a World Heritage Site by UNESCO in 1997 for its historic town site, architecture and ancient water-supply system.

The Old Town of Lijiang,     1     (locate) in China’s Yunan province, is one of the last ancient towns that survive in China. Lying in     2     broad, fertile valley in the northwest of Yunan Province, Lijiang     3     (be) a commercial, cultural and political center of the Naxi (纳西族) people since Yuan Dynasty. Lijiang may leave an     4    (impress) on you for its beauty. The aging wooden buildings decorated with red lanterns and local musicians     5     (play) their old Naxi instruments in the time-worn streets show a lifestyle and culture that seem lost in time.

As UNESCO describes the village on its website, “The old Town of Lijiang,     6     is perfectly adapted to the uneven land form, has kept a historic townscape of high quality.” Its architecture is well known     7     combining the elements from several ancient cultures. Lijiang also possesses     8     we call the ancient water-supply system that still functions     9     (effective) today. However, with more and more tourists pouring in, it remains     10     (see) whether Lijiang can continue to keep its traditional lifestyle and culture.

The giant panda is an endangered species, threatened by continued habitat loss and by a very low birthrate both in the wild and in captivity（圈养）. Its range is     1     （current）restricted to a small portion on the western edge of its historical range.

In 2006, scientists reported that     2     number of pandas living in the wild may have been estimated at about 1,000. Previous population surveys had used conventional methods     3     （estimate）the size of the wild panda population, but using a new method     4     matyzes DNA from panda droppings, scientists believe the wild population may be as large as 3,000. Although the species is still endangered, the conservation efforts     5     （think）to be working. In 2006, there were 40 panda reserves in China,     6     （compare）to just 13 reserves two decades ago. In the same year,     7     （it）habitats in Sichuan province gained a UNESCO World Heritage Site status.

In 2012, Earthwatch Institute, a     8     （globe）nonprofit which teams volunteers with scientists to conduct important environmental research,     9     （launch）s program based in the Wolong National Nature Reserve. This program allows volunteers to work up close with pandas cared     10     in captivity, and help them adapt to life in the wild.

Koalas will stand a better chance of fighting against extinction if drinking stations are set up for them.

Previously, it     1    (think) that koalas only got water through eating leaves, but a new study has found that they are     2    (actual) willing to drink from standing water. The study,     3    (publish) in PLOS One, offers hope of preventing koalas from dying out, with researchers     4    (find) that koalas regularly use artificial water stations — especially during hot and dry periods.

Koala populations along Australia’s east coast have been declining     5     different reasons. Study leader Dr Mella, from the University of Sydney, has been doing field work in Gunnedah in New South Wales,     6     a heatwave killed about one-in-four of the local koala population in 2009.

During the first 12     7    (month) of the study, Dr Mella and her team recorded koalas’ drinking. They also found that     8     total number of visits doubled during summer compared to other seasons. “Koalas regularly use these stations     9    (meet) their water needs and we still need much     10    (long) time to examine their drinking behavior.” Dr Mella said.