1 . Japan said Tuesday that it would start pouring treated radioactive water (放射性废水) from the Fukushima nuclear power plant into the Pacific Ocean within two years. Officials in Tokyo said the water would be filtered and diluted (稀释) to safe levels first, but most locals remain firmly opposed to the plan. Protesters gathered outside Prime Minister Yoshihide Suga’s residence in downtown Tokyo to criticize the government’s decision.

More than a million tons of radioactive water is currently being stored at the Fukushima power plant in a massive tank farm big enough to fill 500 Olympic-sized swimming pools. The wastewater comes from water pumped in to cool the plant’s damaged reactors (反应堆). The government says it has simply run out of room to store all the water. The plan to dump the water into the ocean first came to light in the autumn of last year, when Japanese news reported anonymous (匿名的) officials said the decision had been taken.

On Tuesday, Suga said that after years of study, his scientific advisors had concluded that ocean discharge was the most possible way to cope with the wastewater. But the decision to pour Fukushima wastewater into the ocean has drawn fire from neighboring Asian countries and local fishermen along Japan’s coast.

China called the decision “extremely irresponsible,” and South Korea summoned (召唤) the Japanese ambassador in Seoul over the matter. “They told us that they wouldn’t release the water into the sea without the support of fishermen,” Kanji Tachiya, who leads a local cooperative of fisheries in Fukushima, told national broadcaster NHK ahead of the announcement on Tuesday. “We can’t support this move to break that promise and release the water into the sea unilaterally (单方面地).”

The actual release of water from the Fukushima plant will take decades to complete. Critics have called on Japan’s government to at least ensure that independent monitoring is in place to check the level of radiation in the poured water is safe for the environment.

2 . Health officials in Canada are very busy these days. They are placing chickens at fixed points all along their border with the United States of America. That’s an enormous distance of 2,500 km.

It’s not a practical joke, nor have the Canadians gone mad. They are using these chickens to see if the deadly West Nile virus is lurking around. The virus infects birds, so they think that the chickens have a good chance of catching the virus. Or the virus will catch the chickens.

Countries around the world are realizing something important. That it may just be possible to stop certain kinds of people from entering their land, but it is very difficult to try and stop viruses that travel from one end of the earth to another. When they travel to new places, they adjust very easily to those climates and sometimes start destroying the local plant and animal life. These biological polluters are called smart polluters.

These smart polluters can be carried across borders of countries unknowingly. Just as we humans are travelling across the globe more often than earlier, these biological polluters have also started journeying much more. They slide into aircraft through their wheels. They bore their way into objects that air travelers may be carrying from one country to another.

Suddenly, a lot of things become clearer. Like why the customs officials in many foreign countries prevent you from bringing in a small plant, or a decorative item made of wood that is in its natural form… They tell you that it’s in the rules.

They have these rules because they know that these varieties of plants that are special to specific places have the power to spread new diseases among native plants and animals. They are called biological polluters and they always create problems in places where they do not belong. They could be special varieties of plants, bugs or even animals.

4 . Nowadays, because of the popularity of modern traffic and modern communication technology, our world is becoming much smaller. Thus our life today is much easier than it was hundreds of years ago, but meanwhile it has brought new problems, the biggest one of which is pollution. For a long time ever since, man has been polluting the earth. The more people, the more pollution.

To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is no longer true. Man is now slowly polluting the whole world.

Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.

Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO₂ is now the most dangerous kind of air pollution. It is caused by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.

The earth is our home. We must take care of it. That means keeping the land, water and air clean. And we must take care of the rise in pollution at the same time.

6 . Sleeping in a noisy room isn’t only distracting (使人分心的), and it can also harm your health. Although researchers have known for decades that long­term loud noises can harm us, it’s only recently become recognized as a widespread problem.

In a new review of previously published studies, researchers from Germany and Denmark took a look at the ways in which noises, such as an airplane passing by or jackhammer digging in the ground, can affect our hearts. Perhaps the most obvious impact of a loud sound while you are sleeping is that it can wake you up. But, even if you don't remember hearing the noise or you don’t physically get out of bed, it can disrupt you in ways you may not realize.

“Noise is not just causing annoyance, but it actually makes us sick,” said Dr. Thomas Münzel, a professor at Johannes Gutenberg University Mainz. “Regardless of where the sound is coming from, if it gets louder than 60 decibels (分贝),it can increase the risk of heart disease.”

When our body hears these noises, it reacts with a stress reaction. In this case, these sudden and unexpected noises cause hormones(荷尔蒙) to speed up and eventually damage the heart. Although the chance that a single noise will affect you is unlikely, it’s the continuous exposure (接触) to the sound that can finally affect you.

“But our heart health isn’t the only cause for concern. Long-term noise may also raise the risk of type 2 diabetes (糖尿病), depression, and anxiety disorders,” he warns. In the future, Münzel plans to examine how noises from cars, planes, and other vehicles affect the brain. But despite the amount or the depth of research he conducts, it’ll take the help of politicians to improve the effect of noise on our health.

“Politicians have to take into account, in particular, the new findings,” Münzel said, “As for aircraft noise and airports, it is important to make new laws and set new lower noise limits that protect people living close by the airport instead of the owners of the airport.”

When it comes to traveling in China’s Guangxi Zhuang Autonomous Region, the Li River is one of the destinations tourists won’t miss. However, with the number of tourists increasing, the river’s water     1    (pollute). Some tourists     2    (frequent) threw garbage into the river. Kitchens on the tour boats were using lots of oil,     3     was often thrown into the water. Besides, more chemicals were used       4    (increase) crop production,    5    (cause) water quality issues and a decrease in the number of fish species. These problems made the local officials worried about the natural environment. They felt     6     urgent to take action to restore the river’s original beauty.

The waste water treatment facilities have been constructed, which has helped improve the water quality and water     7    (conserve).     8    (dozen) of polluting enterprises were closed or moved. What’s more, the local government set up strict regulations regarding further industrial development. So far new rules have been introduced regarding tour boat routes and garbage disposal methods. With these measures, it is believed that the beauty of the Li River will come back soon.

What is the most amazing is that the “Water Ten Plan” is now tackling water pollution across the country. With such campaigns     9     effect, China’s waterways are heading towards a clean and     10    (sustain) future.