populations

Passage TwoQuestions 51 to 55 are based on the following passage.Rising temperatures and overfishing in the pristine (未受污染的) waters around the Antarctic could see king penguin populations pushed to the brink of extinction by the end of the century

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A large, brightly colored invasive species called the Joro spider is on the move in the United States. Populations have been growing in parts of the South and East Coast for years, and many researchers think it\'s only a matter of time before they sprea

China has approved the inhalable vaccine for emergency use among populations aged 18 and above who had received two doses of traditional vaccines, but not within the previous six months.中国批准了吸入式新冠疫苗的紧急使用，18岁以上接种了两剂新冠疫苗，且