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Helicopter without pilots – level 2
16-02-2022 15:00
For the first time, a military helicopter flew without...Helicopter without pilots – level 3
16-02-2022 15:00
A Black Hawk helicopter flew for the first time...Winter Olympics and the natural world – level 1
14-02-2022 07:00
The Winter Olympic Games are in China now. China...Winter Olympics and the natural world – level 2
14-02-2022 07:00
China is hosting this year’s Winter Olympics, and officials...Winter Olympics and the natural world – level 3
14-02-2022 07:00
China is showcasing low-carbon technologies for the green Winter...Birds clean streets – level 2
09-02-2022 07:00
Many cities in the world have problems with cigarette...Why people like crime – level 3
08-02-2022 07:00
Psychologists say that people’s obsession with true crime is...The oldest aquarium fish – level 1
02-02-2022 15:00
Methuselah is a fish. It lives in an aquarium...