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Rice planthoppers, known as a major pest for rice, had been detected in over 260 million mu (17.33 million hectares) of rice crops as of last week, up 50 percent from the same period last year, according to the national crop pest monitoring and reporting network.

Measures taken by each side of the Strait to safeguard the interests of the entire nation will be supported firmly by all the Chinese people, said Fan Liqing, spokeswoman of the State Council Taiwan Affairs Office, at a press conference.

"However, problems still exist in the present standards of food safety due to the restricted development of food industry and ability of risk assessment," Su said.

Yang Liwei was China's first astronaut sent into space in 2005. Eight Chinese astronauts have been sent into space by Shenzhou spacecrafts. The country aims to build a space station around 2020.

According to the five-year plan, China will form a 40,000-km-long network, composed of lines with an operational speed of 160 km-plus per hour, by the end of 2015.