Light pollution is a serious problem. This became completely obvious when the World Atlas of Artificial Night Sky Brightness, a computer-created map based on thousands of satellite (卫星) photos,     1     (publish) in 2016. The map shows how and where     2    (we) world is lit up at night. Large areas of North America, Europe, and Asia are glowing (发光) with light, while only the most remote (偏远的) places on Earth are in total darkness. Some of the most light-polluted    3     (country) in the world are Singapore, Qatar, and Kuwait.

Sky glow is the brightening of the night sky, mostly over cities, because    4    the electric lights of cars, streetlamps, offices, factories and buildings, turning night into day.

People     5     live in cities with high levels of sky glow have a hard time     6     (see) stars at night. Scientists are     7     (particular) worried about sky glow pollution as it influences their ability     8     (view) space.

According to research, more    9     80% of the world’s population, and 99% of Americans and Europeans, live under sky glow. It sounds pretty, but sky glow    10    (cause) by human activities is one of the most common forms of light pollution.

Japan said on Tuesday that it had decided to    1    (gradual) release tons of treated wastewater from the ruined Fukushima Daiichi nuclear plant (福岛第一核电站) into the ocean,    2     (describe) it as the best solution to dealing with the leftovers (残留物) from the Fukushima nuclear accident, one of the    3    (serious) in the world.

The    4    (decide) ends years of debate over how to deal with the water,    5    is enough to fill more than 500 Olympic-sized swimming pools.

“The Japanese government ignores concerns and strong opposition both at home and abroad. Such an    6    (responsilble)act not only directly harms the interests of the people in Japan’s neighbouring countries, but    7    threatens the global marine environment and international public health security,” Chinese Foreign Ministry spokesman Wang Wenbin said.

Greenpeace(绿色和平组织)criticized Japan’s plan and said there are other solutions that should    8    (censider). “    9    than using the best available technology to store and process the water    10    the long term, they have chosen the cheapest solution, damping the water into the Pactfie Ocean.”