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The survey shows that teenagers also receive information about sex from books, magazines and friends and at school.

Chinese meteorological authorities use a four-tier color-coded weather warning system, with red being the most severe, followed by orange, yellow and blue.

Since 2000, the first phase of the sandstorm control project has helped reduce the frequency of sandstorm weather and improve air quality in Beijing and Tianjin, two of the largest cities in northern China, according to the State Council.

Over the last two decades, 88 state-level high-tech industrial parks have been established across the country.

According to him, the developed countries need to shoulder primary responsibility for development financing and earnestly to honor their official development commitment.