China will closely track     1     assess the impacts of Japan's "extremely selfish and     2    (responsible) " plan to discharge nuclear-contaminated water into the ocean, the National Nuclear Security Administration said.

Japan's plan prioritizes its own interests     3     the long-term well-being of humanity, the administration said in     4     media release on Thursday, the same day that Japan is set to start releasing     5     (treat) radioactive water into the Pacific Ocean     6     part of its plan to decommission the crippled Fukushima Daiichi Nuclear Power Plant.

Japanese Prime Minister Fumio Kishida     7     (give) the final go-ahead for the plan to gradually release more     8    1 million metric tons of radioactive water from the plant into the ocean at a Cabinet meeting on Tuesday.

"We urge the Japanese government to listen to the voice of the international community and     9     (effective) dispose of the nuclear-contaminated water in a     10     (science), safe and transparent manner under strict international supervision," the administration said.

A sandstorm,     1     originated in Mongolia on Tuesday, swept through vast regions of northern China, causing heavy pollution. The storm, according to the National Meteorological Center, was the     2    (strong) in China so far this year and affected several provincial-level regions. It was said that strong winds     3    (blow) over loose sand and soil created the conditions for sand and dust storms. Satellite images showed that by Wednesday morning, it     4    (cover) 854,000 square kilometers,     5    (rough) twice the size of the US state of California.     6    violent sandstorm swallowed everything in its path and caused much inconvenience. Visibility remained lower than 1,000 meters in some parts of northern China. The     7    (government) of the affected areas urged people with respiratory(呼吸道)illnesses to avoid outdoor activities and recommended that brightly colored clothes     8    (wear)to avoid accidents amid poor visibility. The capital’s parks stopped boats and cable cars     9    (ensure)the safety of visitors. It is hard to say     10     there will be more such weather conditions, but the NMC will keep close watch this spring.

Global warming refers to the fact that the earth's atmosphere is warming near     1     (it) surface — in other words, it's getting hotter. Some scientists say it is human activity     2     has caused global warming. However, there are other theories as well.

One popular theory relates to the “greenhouse effect”. Gases that make up the atmosphere are similar to     3     greenhouse because they allow sunlight     4     (pass) through, and then trap much of the heat from     5     (escape). This naturally occurring phenomenon,     6     is called greenhouse warming, keeps the earth's surface     7     (warm) than it would be.

While scientists agree that human-produced compounds (化合物) like carbon dioxide and others are being released into the atmosphere, some argue it's not clear how this results     8     the changes in temperature.

Global warming can     9     (great) affect human life on many levels. Scientists have made great     10     (contribute) to finding out how long the earth has been warming, at what rate it is warming, and what factors are causing it. These answers may better prepare people to handle its effects.

If you take a look around your kitchen or office, chances are     1     you’ll notice that you are surrounded by plastic water bottles, take-out cups, plastic grocery bags and food packages. These are all examples of single-use plastic products, which is     2     hot topic based on both environmental and health concerns.

It’s certainly not realistic     3     (remove) all plastic from your life, but some statistics may encourage you to reduce your single-use plastic footprints.

The popularity of plastic, which     4     (begin) rising in the 1950s, is growing out of control—18.2 trillion pounds of plastic has been produced. And there is no sign of slowing down. Scientists say that another 26.5 trillion pounds will be produced worldwide     5     2050.

Every piece of plastic     6     (create) will remain in the environment in some form, but if you conveniently throw it out, wind and run-off carry the waste down the sewer(污水管) and directly to the ocean,     7     (affect) the marine life including the fish, a main source of food for     8     (human).

So focused     9     (be) the society on making people’s life more convenient in the short term, but in the long run, those everyday conveniences are at the expense of our health. Worried about     10     (globe) warming? You should be.

Global temperature changes are in fact a natural process. However, human demands for energy, manufactured goods, transport and animal products have increased carbon emissions (排放). We     1     (cause) over 1°C of warming since the 19th century. For comparison, it     2     (take) 5,000 years for the Earth to warm up by 4-7°C after ice ages.

The small numbers may seem insignificant,     3     this temperature increase has had a huge impact globally. Sea levels have risen 15cm in the past century. Animals and ecosystems can’t keep up with the new rate of change,            4     forces many species into extinction. In turn, this comes back to bother humans, who rely on a balance of all ecosystems     5     (keep) our way of life.

Unless we completely change our habits, our future could be     6     (hope). In face of climate change,     7     governments should be focusing on now is promoting the use of renewable energy, supporting green farming, and reducing population     8     (grow). Individuals can pay attention to     9     (cut) out car and plane travel, limiting their intake of animal products, and consuming far less manufactured goods. It will take much more than a village, but it’s possible — and everyone is responsible     10     what happens next.