2009年4月,墨西哥、美国等地爆发“猪流感”疫情。美国疾病控制和预防中心专家解释说,“猪流感”是由猪流感病毒引起的一种急性呼吸道传染疾病。经过科学家进一步研究发现,这种病毒是包含了禽流感、猪流感和人流感三种流感病毒在内的新型病毒,并把它命名为甲型H1N1流感病毒。这说明①规律具有客观性,不以人的意志为转移 ②认识在实践基础上不断深化、扩展和推移 ③实践是认识发展的根本动力 ④认识对实践具有反作用
It’s reported that medical examination (体检)will help us find out health problems as early as possible.
Mo Yan, the writer, has won this year's Nobel Prize for Literature.
The boy is very brave, he_______ the tall tree.
Mr Black_______ Shanghai this afternoon. Do you know when the earliest plane to Shanghai _______ ?
— Plenty of latest news and information are often covered live on CCTV-1. — That’s true. ________important news channel CCTV-1 is!