Question

China’s Yangtze River is the world’s third-longest river. It is home to nearly 400 species of fish. However, the Chinese paddlefish( 白 鲟 ), once c1.in the area, is no longer a member of this ecosystem. Scientists from China said recently that the species had completely d2.. The fish l3.went extinct( 灭 绝 ) sometime between 2005 and 2010. “It’s very sad,” said Zeb Hogan, a U.S. biologist. “We’ve lost a unique animal. There is no h4.of recovery.”

The Chinese paddlefish was one of the world’s l5.freshwater fish species. It could grow to seven meters. The fish has a big n6.that earned it the nickname “elephant fish.” The Chinese paddlefish was an a7.species. It first appeared in the Jurassic period(侏罗纪时期). After existing for 200 million years, the species finally went extinct because of human a8..

Scientists warn that many freshwater fish species in the Yangtze River are in d9.. The Chinese paddlefish was only the first to disappear. Fortunately, China has taken a10.. In January, the country started a ten-year fishing ban on the Yangtze River.

Answer 1